SGMK-SSAM-WIKI - User contributions [en]

HOME MADE 2025 Fields Of Results

2025-09-16T15:06:31Z

SaLome: /* [telegram group(2),"Homemade short and sweet"] */

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [telegram group(2),"Homemade short and sweet"] ===
This group is made for doku reasons: to sort and bring together in a quick way, short results notes of the group into a documentary channel. So in a quick fun way, hopefully this becomes a public window for interested ones to catch a glim of the resulting dynamic at SGMK/Homemade. Chronology is not an issue.

Drop and forward to here https://t.me/+xeMpIGpLQuQ2ODJk your links, picts, comments... documenting related projects
💧🩷🪩

 
[[#top]]
 

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

 
[[#top]]
 

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
File:Screenshot 2025-08-18 at 08.14.12.png
File:Screenshot 2025-08-18 at 08.14.59.png
File:DSC05055.JPG
File:DSC05050.JPG
File:DSC00229.JPG
</gallery>

 
[[#top]]
 

=== [SaLome, projects: installation, workshops, concert] ===

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

 
[[#top]]
 

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

 
[[#top]]
 

=== [name,project] ===
Hello very happy to join into a bigger picture

 
[[#top]]

HOME MADE 2025 Fields Of Results

2025-09-14T20:27:13Z

SaLome: /* [name,project] */

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [telegram group(2),"Homemade short and sweet"] ===
[in bearbeitung, release 16.9.25] This group is made for doku reasons: to sort and bring together in a quick way, short results notes of the group into a documentary channel. So in a quick fun way, hopefully this becomes a public window for interested ones to catch a glim of the resulting dynamic at SGMK/Homemade. Chronology is not an issue.

Drop and forward to here https://t.me/+xeMpIGpLQuQ2ODJk your links, picts, comments... documenting related projects
💧🩷🪩

 
[[#top]]
 

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

 
[[#top]]
 

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
File:Screenshot 2025-08-18 at 08.14.12.png
File:Screenshot 2025-08-18 at 08.14.59.png
File:DSC05055.JPG
File:DSC05050.JPG
File:DSC00229.JPG
</gallery>

 
[[#top]]
 

=== [SaLome, projects: installation, workshops, concert] ===

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

 
[[#top]]
 

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

 
[[#top]]
 

=== [name,project] ===
Hello very happy to join into a bigger picture

 
[[#top]]

HOME MADE 2025 Fields Of Results

2025-08-26T08:42:19Z

SaLome: /* The Fields of Homemade 2025 and Homemade Documentations */

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

 
[[#top]]
 

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
File:Screenshot 2025-08-18 at 08.14.12.png
File:Screenshot 2025-08-18 at 08.14.59.png
File:DSC05055.JPG
File:DSC05050.JPG
File:DSC00229.JPG
</gallery>

 
[[#top]]
 

=== [SaLome, projects: installation, workshops, concert] ===

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

 
[[#top]]
 

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

 
[[#top]]
 

=== [name,project] ===
Hello very happy to join into a bigger picture

 
[[#top]]

HOME MADE 2025 Fields Of Results

2025-08-19T14:04:25Z

SaLome:

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

 
[[#top]]
 

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
File:Screenshot 2025-08-18 at 08.14.12.png
File:Screenshot 2025-08-18 at 08.14.59.png
File:DSC05055.JPG
File:DSC05050.JPG
File:DSC00229.JPG
</gallery>

 
[[#top]]
 

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [SaLome, projects: installation, workshops, concert] ===

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

 
[[#top]]
 

=== [name,project] ===
Hello very happy to join into a bigger picture

 
[[#top]]
 

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

 
[[#top]]

HOME MADE 2025 Fields Of Results

2025-08-19T13:57:13Z

SaLome:

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
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File:Screenshot 2025-08-18 at 08.14.59.png
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File:DSC05050.JPG
File:DSC00229.JPG
</gallery>

 
[[#top]]
 

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [SaLome, projects: installation, workshops, concert] ===

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

 
[[#top]]
 

=== [name,project] ===
Hello very happy to join into a bigger picture

 
[[#top]]
 

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

 
[[#top]]

HOME MADE 2025 Fields Of Results

2025-08-19T13:55:25Z

SaLome: /* [name,project] */

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
File:Screenshot 2025-08-18 at 08.14.12.png
File:Screenshot 2025-08-18 at 08.14.59.png
File:DSC05055.JPG
File:DSC05050.JPG
File:DSC00229.JPG
</gallery>

=== [name,project] ===
(please enjoy writing about your results and fields)

 
[[#top]]
 

=== [SaLome, projects: installation, workshops, concert] ===

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

 
[[#top]]
 

=== [name,project] ===
Hello very happy to join into a bigger picture

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

HOME MADE 2025 Fields Of Results

2025-08-19T13:52:19Z

SaLome: /* [SaLome, projects: installation, workshops, concert] */

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Intro: Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by Orga Team Magic & Crew Power is.
''' 

Concerts & Party was hot summer like. What might got missing a bit at the end of the week, is THE SHOW OF THE MECHA STUFF! 

So here the call for documentations, so it's not a orga team thing, but a crew thing honoring Homemade Fileds of dynamic & progress.

Please, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

 

== The Fields of Homemade 2025 and Homemade Documentations ==

=== [Hugobiwan, Braillerap] ===

[https://www.youtube.com/shorts/Wd0dwT0iTG0 Look (or hear if you like vintage loops)]

[[File:SGMK-HM2025-Braillerapconf-yesroom.jpg|thumb|Braillerap at Homemade 2025]]

[https://www.braillerap.org The Braillerap machine (Braille + reprap)] is an open source Braille embosser able to translate text, vectors, and open street map data into relief dots that can be touched by blind people to read and feel informations.

The whole project is documented, and it is supported by NGI commons, MHK and Climate Change Lab organizations. The main developper of the project, is Stephane Godin.

We brought a Braillerap machine to homemade and first had to repair it as two pieces were missing or broken :

* an O-Ring that is being used to catch and push the sheets of A4 paper.
* a 3D printed part that is used to keep the sheet of paper on an horizontal plane.

With the help of the great SGMK team, we could quickly find a o-ring in the 2 tons material reserve. Also we had a replacing part from version 1 of the machine.

==== Repairing lessons ====

First lesson :

* if something mechanical is broken or missing under the paper plate of a braillerap machine, you will probably have to unmount half of the machine to replace it. It will last half a day to be properly made and finished. So take your time. It would be interesting not to glue the paper plate when building the machine, if it can be properly held in place...

Second lesson :

* This machine had been made by students of the University of Rennes 2 (honour to them !). We discovered that they replaced an iron bar with an aluminium rod, for the longest one that goes through the whole machine. As this part is blocked by two scroll wheels and screws, it had been crushed at both ends and it was very difficult to take off the enclosure, in order to repair. Conclusion : if it is possible, use ONLY iron rods, or be VERY careful not to crush aluminium rods or you won't be able to maintain or upgrade properly your machine. In fact, using too much force can mean breaking the enclosure. And the enclosure defines the global geometry of the machine (through axis holes...).

==== Silhouette hypothesis / Urs Gaudenz ====

At the next table of the Braillerap project were great neighbours : [https://www.gaudi.ch/GaudiLabs/ Gaudi labs people] and Tara, sewing around. They were using a multi tools digital fabrication machine named [https://www.silhouettefr.fr/ the "Silhouette"]. Urs Gaudenz suggested that it was possible to emboss Braille using this machine. After having looked at the technical manual, no doubt this is possible. The machine takes vectors as inputs, and it is possible to change the toolhead at the condition to adapt it to the machine. Even if we shall lose a lot of the Braillerap softwares functionnalities, '''generating Braille in vector format (without the gcode step) and then send it to the silhouette equiped with an embosser tool would work.'''

In july 2025 Babette Sperling and Mario Voigt demonstrated in Fablab Chemnitz a way to make quickly an embosser head by using an electric drill, sand paper and protecting glasses, during our Braillerap mounting workshop. The principle is to sand a grub screw that is turning fast in a sand paper sheet. Then we get an embosser head that could be adapted also for the Silhouette Machine. This is a great reminder of the fact that the Braillerap project was originally born from my idea to transform open source 3D printers (repraps) into braille embossers. The silhouette community is big and could be also interested in accessibility.

Thank you Urs for this input !

==== Materials and torture prints ====

[[File:SGMK-HM2025-Braille-copper-anniversary.jpg|thumb]]

===== Materials =====

The Braillerap could successfully emboss on aluminium from soda cans, and copper tape. Copper tape is very interesting as it can be taped after having being embossed. The proper way to prepare materials is the following :

* Prepare and cut a rectangle of your material (alu can, other)
* Use tape to glue your material (on its sides) on an A4 or A5 paper sheet (depending of the size of your Braillerap)
* Prepare the content of your page with [https://github.com/braillerap/DesktopBrailleRAP/releases dekstop Braillerap open source software]. You can define an embossing zone in the page to preview the result.
* Input your sheet of paper into the machine with me material upside, like a sheet of paper.
* Emboss !

Then, AFTER, take out the sheet of paper, take out the material and use it elsewhere (clothes, door to label, place...).

===== Torture print lessons =====

[[File:Capture-torture.png|thumb|Torture print in Desktop Braillerap sofware]]

We had the luck to present the project in the "yes room" that was full of great electronics and code prototypers. Some sent us a strange vector file that was clearly impossible to translate and emboss in Braille in a A4 paper sheet.

* Because it was a complex electronic scheme with all pins labelled in very small typo and the braille must respect a standard physical size
* Because multiple layers where mixed everywhere on the page in a whole svg.

But we decided to launch this torture print anyway. Important detail, as we did not have required paper to emboss well relief dots (at least 180 mg/m²) i came to the Kids room where Salome had paper for everybody to make drawings. '''I took some classical A4 paper sheets.'''

'''As the paper wheets where too thin, i decided to take 4 sheets, and to put them like one sheet of paper in the braillerap.'''
Then we launched the torture print with the electronic scheme on the machine.

This was very interesting torture test.

Results :

* It seems that '''in certain conditions (4 sheets of "classical" A4 paper) the braillerap can emboss at least 4 sheets of paper at once.''' This is important for people that are making transcriptions for students, in order to gain time. The great mechanical Perkins embosser can emboss several sheets at once, but requires a lot of strenght and training to do so. Of course this paper is not enough solid to last. So we could emboss, then glue the sheets on stronger supports (cardboard, strong paper...).

* '''All the labels that were written in the .svg layers for the integrated circuits were automatically translated in Braille''' as can show the preview of the great desktop Braillerap software... So no need to prepare all you document by separating text from vectors, and then creating them on Desktop Braillerap. You can prepare very good documents directly in Inkscape or a .svg editor, but you must prepare them managing with the Braille size, and using organized layers for your texts, and other layers for your graphics. This shows also the strenght of desktop braillerap software, that makes that easy for anybody.

* The intricated texts translated into braille on braille made the machine crazy : '''the rythm of embossing was totally accelerated''' (the machine receives Gcode corresponding to braille that was written on braille + parts of vectors). It began embossing, then the current was cut (a feet on a wire :), alignment between tool head and other part as suddenly lost, and ideas came...

We exchanged (with Sammy of Canvas synth) about the mechanical improvement of the machine, because clearly the actual system can't manage such a speed (it was like embossing cloud of dots to create grey levels...).

Hypothesis :

* When the tool head that types a dot from the bottom of the machine is pushed up, it is by a strong electromagnet. It can work at important speed.
But when the solenoid comes back in the bottom position, it is just pushed back by a loose spring and gravity. '''This system is too loose and too slow.'''

* '''It would be possible to imagine a whole rubber surface at the top of the machine to remove the upper carriage (Sammy hypothesis)'''. In fact things are not so simple because to make a good braille dot you should push your paper into a round shape that is upside. But we could also imagine to make tests or to build a dedicated 3D printed shape exactly calibrated to receive the tool head movements in a kind of matrix.

* '''It would be possible to created a mechanical system that strongly push back the tool head quickly'''. For example using a H bridge with a polarized electro magnet in order to push it back.

This is one more time a lesson about the interest of being with creative people : embossing torture prints can teach a lot !

=== If we Listen, Do Microbes Sing our Song - Nora Hauswirth, Kaspar König, Maya Minder ===

Together for three days, we attended Homemade to prepare a sound piece on the topic of Soil Microbes and One-Health for a participative performance accompanied by a sound installation in the botanical garden of Zurich. We collected the many different voices from Homemade, a total of 17 different languages and countries who were attending homemade this year and made each one recite a sentence from a the Soil Assembly Manifesto. We also recorded extracts from Simon Berz Sound performance and Ralph Schreibers tin can music instruments and mixed it together with sounds from Kaspar and Maya, Nora donated some recordings from the Amazone rainforest.

 
„If We Listen, Do Microbes Sing Our Stories“ ist eine Soundinstallation und somatische Performance als Annäherung an das Mikrobiom des Bodens. Am Anfang der Performance steht ein gastrosophisches Experiment; eine Vereinigung zwischen dem menschlichen Mikrobiom und die des Boden. Durch die Bewegung im Raum verbinden sich akustische Aufnahmen aus dem Amazonas und verschiedensprachige Stimmen. Die Performance basiert auf Texten der Soil Assembly in Indien und Manaus und erkunden Bodenmikroben über eine kollektive Erfahrung. Sie bringt unterschiedliche Ökosysteme – von tropischen Regenwäldern bis zu städtischen Gärten – sowie verschiedene Stimmen, Sprachen und Perspektiven zusammen. Sie vereint menschliche und nicht-menschliche Stimmen in einem gemeinsamen Klangraum. Der Boden ist Anfang und Ende des Lebens, ein lebendiger Raum, der Geschichten, Kulturen, Beziehungen und Träume trägt und sowohl für menschliches als auch nicht-menschliches Leben essentiell ist. Bodenmikroben nähren die Biodiversität und unsere Kulturen. Ähnlich wie das Wort Agrarwirtschaft im Deutschen verbindet das englische Wort "Agriculture" die Kulturen im Boden mit der Menschlichen. Die Erhaltung von Lebensmittel, Kochen, Sammeln, Dreschen, Fermentieren, Einmachen, dies alles waren kollektive Arbeitsprozess, welche den Menschen evolutionär zum Überleben verhalfen. Der Akt der kollektiven Arbeit ist tief in den Böden eingeschrieben. Unsere Verbindung zur Erde ist sowohl spirituell als auch kollektiv. In einer Welt, die durch Fragmentierung, Trennung und Ausbeutung geprägt ist, ist die Wiedervereinigung mit dem Boden entscheidend für individuelle, kollektive und planetare Gesundheit sowie für territoriale Gerechtigkeit und Widerstand gegen moderne Kolonialisierung. Daher ist der Schutz des Bodens zugleich ein Kampf für Rechte, Vielfalt, ein erfülltes Leben und tiefgreifende gesellschaftliche Veränderungen.
 
Die Performance und Installation sind Teil der Performance Serie "Botanical Memories: A Performance Series", von WE ARE AIA in Zusammenarbeit mit dem Botanischen Garten der Universität von Zürich. Das Programm erstreckt sich über den Sommer 2025 und umfasst Aufführungen und Workshops, die sowohl unser traditionelles als auch unser sich entwickelndes Wissen über Heilpflanzen erforschen. 
Ort: Tropisches Gewächshaus des neuen Botanischen Garten Zürich
 
Sound-Installation Samstag, 15. und Sonntag, 16. August 2025 (60 Minuten) während den Öffnungszeiten (9.30-16.45 Uhr)
 
Performance: Samstag, 16. August 2025, 17 Uhr (90 Minuten), Sound, Bewegung, Soil Capsules, Boden-Kaviar molekulare Gastronomie. Anschliessendes Apéro mit Amazonas Kombucha und fermentiertem Gartengemüse.
 
Idee und Konzept: Maya Minder, Nora Hauswirth, Kaspar König 
Sound Design: Kaspar König 
Text: Kollektives Manifest Soil Assembly Manaus, Antti Salimen 50 Words of Soil, Nora Hauswirth 
Recordings und Sprecher*innen: 
Synature: Aufnahmen im Amazonas von Flora und Fauna 
Musik: Kaspar König, Simon Bärz, und Ralph Schreiber 
Stimme 1: Nora Hauswirth, Stimme 2: Maya Minder, Stimme 3: Lina Lopes, Stimme 4: Gabriela Costa Braga und Patrícia Yusió
Weitere Stimmen: 
Christian Bobst, Ana Victoria Bruno, Wolfgang Dorningen, Quentin Aurat, Monika Pocirnic, Jena Jang, Hiro Ohara, Chrysa Chouliara, Yair Reshef, Shih Wei Chieh, Oliver Jäggi, Felix Bäntli 
Molecular Food Design: Maya Minder 
Food culinary: Nora Hauswirth, Maya Minder 

Sprachen: Deutsch, Englisch, Französisch, Griechisch, Hebräisch, Japanisch, Koreanisch, Italienisch, Manadrin, Portugiesisch, Schweizerdeutsch, Slovenisch, Spanisch 

[https://www.weareaia.ch/botanical-memories-a-performances-serie-if-we-listen-do-microbes-sing-our-stories/ Performance Information at Botanischer Garten Zurich] 

<gallery mode="packed-hover" widths=320px heights=240x>
File:Screenshot 2025-08-18 at 08.14.12.png
File:Screenshot 2025-08-18 at 08.14.59.png
File:DSC05055.JPG
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</gallery>

=== [name,project] ===
(please enjoy writing about your results and fields)

=== [SaLome, projects: installation, workshops, concert] === [[#top]]

* It's my first wiki page, I set up
Makes appetite to do more pages for what happend in this week about my: 
* installation
* workshops
* concert

yes, to describe the learning in this week, is hardly possible, but I try this this way.

=== [name,project] ===
Hello very happy to join into a bigger picture

=== [Jonas ↯, Jet Engine Based on Car Turbocharger] ===
TL;DR Not self sustaining, presumably combustion chamber too small and/or initial air flow too low and/or 30 kW heat input is too low. 
 
'''Some facts:'''
* Built for demo reasons and tests with compressor bleed air, no (usable) thrust intended
* Radial type engine from abusing small automotive turbocharger with test certificate up to 180000 RPM intended for ~120 HP gasoline cars
* Initial air by repurposed old vacuum cleaner
* Fuel is 4 bar propane gas from gas phase
* Burner is 30 kW roofing torch running on that propane, flameout prevented by torch itself
* Lubrication with 3 bar (IIRC) gear pump on current-limited 12 V pumping wide range motor oil
* High voltage ignition by Mazzilli ZVS + CRT flyback transformer on 24 V / 4 A (extremely reliable <3 )
* Tried to minimize welding, welding only required in 2 places xD

'''Basic continuous media flow:''' Cool air sucked into compressor inlet of turbocharger ==> air is compressed by compressor wheel of turbocharger ==> compressed air flows from compressor outlet into external combustion chamber ==> the air is mixed and burnt with propane gas in the chamber ==> 1000 °C hot exhaust gases exit combustion chamber and flow into turbine inlet of turbocharger ==> the hot exhaust expands and drives turbine wheel of turbocharger ==> the exhaust gases exit from turbine outlet into surroundings. 
Note that media flow is ''continuous'' as opposed to discontinuous flow in pulse jets and normal pulse detonation engines. That means compression is also continuous and during operation a steady stream of air is forced through the combustion chamber. The harder the compression the stronger that stream. 
 
The thermodynamic process is called "Brayton process". Work is extracted in the turbine by isentropic expansion of the exhaust, and partially expended in the compressor to perform isentropic compression of fresh air. Between compression and expansion isobaric heat addition takes place. A small part of work can be diverted for external use. 
 
'''Expected behavior:'''
Initially air is forced through the system by means of the old vacuum cleaner's air outlet. The roofing torch has a pilot flame that requires less air than the vacuum cleaner is able to force through the entire engine. The air is turned up until a point where the pilot flame is expected to survive. The high voltage ignition is enabled which creates a hot plasma arc inside the torch. Such an arc is like that from a welder and keeps burning until the ignition is disabled. It also does not extinguish from strong winds like that from the vacuum cleaner. After the arc is burning, the pilot gas is turned on and the arc will immediately ignite the gas. The pilot flame stays alight without high voltage ignition so ignition is disabled again. Once the pilot flame burns the vacuum cleaner is turned up to maximum power. On the press of the torch handle main gas is added and the pilot flame becomes the main flame until the handle is left. This flame's energy spins the turbine of the turbocharger. 
In the turbocharger both the turbine wheel and the compressor wheel sit on the same shaft. The ''faster'' the turbine wheel spins the ''harder'' the compressor compresses new air into the combustion chamber. For every amount of air only a certain amount of fuel can be burnt and thus converted to thermal power. The more air is compressed into the chamber the more fuel can be converted to heat in a given timespan and the faster the turbine will spin (and the more air the compressor will compress...). 
After having heated up sufficiently the process enters the positive feedback region which from my understanding is (nearly?) identical to the self sustaining region. That is the time to remove the vacuum cleaner as from that point the engine will feed itself enough air for the required flame to survive. Initially the gas/air mixture might be rather rich resulting in high flame temperatures and exhaust gases exceeding 1000 °C. Even if the turbocharger is designed for gasoline cars, which are prone to higher (900 to 1000 °) exhaust temperatures compared to Diesel ones it won't tolerate prolonged exposure to >1000° C gases. With more air delivered by the compressor the hot exhaust will cool down more and more until a lean equilibrium is attained. Increasing the fuel flow will increase the gas temperature again. In this operating region every additional gram of fuel delivers ''more'' power than what is needed for sustaining the current compressed air flow. That netto power can be harvested as mechanical shaft power, bleed air or thrust. Note that harvesting bleed air will lead to less air in the combustion process thus increasing the flame temperature thus stressing the turbine more 
 
'''Observed behavior:'''
* Extremely reliable ignition without any deflagrations whatsoever
* Serious flame emission from the turbocharger's turbine outlet when on half to full power with red glowing turbine wheel
* Small or no flame emission and turbine wheel glowing orange when on partial power
* Noticeably attempting to build pressure on partial power but failed attempts to remove initial air (the vacuum cleaner) while running
* No positive feedback
* Very unreliable lubrication with no damages to turbocharger despite multiple failures in lubrication system
 
'''Conclusion:'''
Without afterburner there should be no flame emission into the surroundings. The result indicates that likely the combustion chamber is too small to contain the whole flame that is generated by the roofing torch inside. If in free air such flames typically measure 50 to 70 cm in length and have a diameter of 15 to 20 cm. The small diameter of the chamber may additionally have led to a too high gas speed inside such that the gas hadn't finished burning by the time it had exited the turbine. This should be addressed by a thicker and longer chamber, i.e. a much larger fire extinguisher. If the start persists to fail despite a larger chamber a better alternative needs to be found for the vacuum cleaner. As a last resort liquid fuel needs to be injected into the chamber using a vaporizer coil wound around the chamber. According to rough estimations by ChatGPT IIRC only 10 ml/s ethanol should be necessary to add some 100 kW of heat. 
 
Perhaps this engine has been building substantial pressure for a short period of time because a non-screw but still forced mechanical air joint was found slightly displaced/separated after the first notice of pressure build-up. No further substantial pressure was noticed after fixing the joint.
 
To be continued !!

HOME MADE 2025 Participants

2025-08-17T14:18:47Z

SaLome:

<--- Back to [[HOME MADE 2025]] ---> Forward to [[HOME MADE 2025 Fields Of Results]]

PLEASE write a few words about yourself, and link to some info about your works and interests.

Then also add ideas what you want to work on, learn from others, or can share with the participant community.

POSTHUM --> please document your project or workshop here for our 20 years anniversary documentation or even use the page [[HOME MADE 2025 Fields Of Results]] for it.
 

==I was part of it!==

=== and You ???? ===

=== Wolfgang ===
It's my first Home Made, but I've been to Dresden a lot, to the KulturgüterSchuppen, ... from Linz, Austria. I'll be working with Uwe & Ralph on dBatteryMusic, Claude is bringing me something to solder, and of course I'll have sound tools to make music and play live. I'll be there on Sunday evening! Glad to see you all!

=== Hugobiwan ===

Hello very happy to join everybody in Switzerland after Germany, Senegal, Belgium.

* Bringing an open source [https://www.braillerap.org Braillerap embossing machine] to repair and play with
* Bringing [https://climatechangelab.org/sylvestre-orchestre/ Sylvestre Orchestre Kits] to test, play with. Would be happy to plug them on you midi in...
* Bringing pocket synths to make noise
* Would be happy to share our international workshops and documentation initiative https://www.forgecc.org

=== [https://instagram.com/gasthaus_kitchenlab '''@maya'''] ===
Mastery(-nasty-)mind and artist working in the fields of eatart, ecology and community building. Co-President with Pascal Millischer of SGMK since 2023. Always up for kitchen experiments. Loves kids, animals, plants, water and music. Gives lectures on fermentation, urban foraging and ecological thinking. Electronics is her secret passion. Discovered sewing recently and does many, many too many projects. [http://algae.vitality.swiss eating a lot of seaweed] [http://www.soilassembly.net cultivating since 2023] [http://https://www.detours-zurich.ch/tour/urban-foraging urban foraging tours]

=== Mara ===
Everyone told me about homemade, so it will be my first and I am really looking forward to the chaos! Thank you for organizing and inviting!
I will offer some blinking LED soldering workshop (also nice for kids). And I bring all the PCB badges I got from other events. I want to finally check out PCB design after having been inspired by Darcy Neals work at Bornhack. And I want to learn guitar, so bring some ear plugs. :D

=== @tamberg ===
* [http://www.tamberg.org/sgmk/2025/route.html Walking there] from Zürich

=== dusjagr ===
Who am I: http://bio.dusseiller.ch
[[File:weilding.png|thumb|right]]

* etch some PCBs...
* a bit of vibe coding
* collaborate on hydrogen production, sonified air-ships and underwater zeppelin research
* Hopefully can manage to get my boat ([https://en.wikipedia.org/wiki/Weidling_(boat) Weidling]) there
 

=== oli w ===
* Will try to monitor (electric) power consumption (and production?) of the entire Homemade 2025 (using power meters with [https://www.home-assistant.io/integrations/zha/ Zigbee] / [https://tasmota.github.io/docs/ Tasmota] / MQTT built in) and display in real time using [https://www.home-assistant.io/ Home Assistant], so we get a grasp :) Who is in to help set up a dashboard?
* Could arrange a visit to [https://bodensee-planetarium.ch Bodensee Planetarium und Sternwarte] in Kreuzlingen, if people are interested. (The observatory has a heliostat and telescope where you can see the Sun's spectral lines, prominences etc. :)

=== fšk ===

Hello, my name is Boštjan, I'm a media artist based in Ljubljana. My art usually involves technology in some way or another. Usually software or hardware. You can find out more about it [https://bostjancadez.art here]. The last 4.5 years I have been focusing on making a VR version of Line Rider. I'm looking forward to meeting some geeks/nerds like myself and seeing what they are up to \o/.
* Will probably be designing levels for my VR game. I need to finish it and get my life back :)
But that is not set in stone. So I dunno...

=== doms ===

plan is to work on image dataset for AI model for use in brushography and build robot with daughter.
Will bring pc, mini brushograph and some stuff.
=== Miranda and Urs ===
[[File:Solar-reflow-cameroon.jpg|thumb]]
SOLAR AND RENEWABLES WORKING GROUP
We will continue on the energy research, particularly working with Michel on projects related to the school in Cameroon https://sokolo.cronopios.org/ Anyone interested in energy, agriculture and sustainable tech please do join us!

We also plan to organise some screenprinting equipment and materials to make 20 years Homemade tshirts. All welcome to bring a tshirt and PIY (print it Yourself).

For jams, Will bring: a mixer and a mic.

=== noisio ===

* Arriving on 3rd of August in the evening
* Will nerd on some recent prototypes: μMixa, RP2040 BassSynth, SHAGGA-Controller, FM-Transmitter
* Can offer workshops all around the clock: https://noisio.de/
* Let's make some noise together!

=== Stefan ===
* Arriving on Monday 4th of August at night by train from Vienna.
If I get stuck on the way (5 train changes:) maybe somebody can pick me up with a car from somewhere, in case that happens I will consult the Telegram Group.
* I will bring tools and Film Stock to create and project 16mm Phytograms with plants from around the area: (https://phytogram.blog/) - Open Workshop Option.
* Project 16mm Film loops at night.
* Play a concert (https://voglsinger.klingt.org/work/)
* Building, soldering, attending Workshops

=== [https://instagram.com/vali_ship/ '''@vali_ship'''] ===
* Data & random visuals & projections

=== [https://vimeo.com/schnaufenberg '''@ganda1f'''] ===
[[File:Transita TS de Luxe.jpg|thumb|alt=Kofferradio Nordmende Transita TS de Luxe]]
🚅 Arriving August 1st together with my son Max (13yo)

📈 Bringing along a [https://rafplay.com/products/bestway-voyager-500-hydro-force-inflatable-3-person-dinghy#images-6 Voyager 500] to bolster up our navy fleet

🛠️ Retro Ghetto Blaster - refactoring a [https://www.radiomuseum.org/r/nordmende_transita_ts_de_luxe.html 1967 Nordmende Transita TS de Luxe]

👁️ UV light spectrum visualization

🧑‍🌾 Aura harvesting

=== Olj ===
* bring some synth / sound stuff and a mixer
* plan to do some experiments / research with starving synth
* working with video synths
* looking forward to jam together

=== Abao ===
'''I am making'''
* I am developing a graphical and transparent DSSC configuration, [https://www.hackteria.org/wiki/Abao_KUBU_residency#W-type_DSSC_configuration we made a starvation synth with Marc] I can give workshop if anyone wants to make it!
[[File:DSSC starvation synth.jpg|thumb|right]]
* [https://github.com/shihweichieh2023/Teensy-4-galvos/ DIY 405nm galvanometer laser system]

'''I am planning to make (a bit difficult to make it happen in the camp but let's talk about it with beers)'''
* DIY CO2 galvanometer laser system
* DSSC based [https://cameramaker.se/Lightfield.htm light field camera] by adding MLA (micro lens array) on top of DSSC array.
* nano-fabricated sub-wavelength gratings on conductive glass for DSSC sunglasses startup future.

'''I will bring'''
* [https://shihweichieh.com/Laser-dye-index Laser dye station]
* DSSC station

'''I need equipments'''
* [https://ebay.us/m/EE1NRX Ceramic Electric Cooktop]
* 3D printers
* A dark room or space (no need to be completely dark) in 1.5x1.5x1.5 meters.
* [https://www.ebay.com/b/Corded-Electric-Heat-Guns/66797/bn_115898228 heat gun]
* CO2 laser cutter

=== Markus S. ===
* Programming (Arduino / Processing / Sonic Pi)
* can give course / talk: Arduino R4 Wifi - Programming the LED matrix
* can repeat Arduino + FastLED etc. course / talk
* can give Processing intro
* Swimming
* Hiking
* interested in further programming stuff (e.g. programming graphic cards?), if somebody offers that

=== Jena J. ===
* Circuit bending & DIY synth hacking
* Noise maker using weird connections + recycled tech
* Sound walks focused on nature and bird songs
* Touring musician — solo album : 🎧 ‘Final Day’ [https://jenajang.bandcamp.com/album/final-day]
* More info : [https://jenajang.com/]

=== SaLome ===
[https://werken.halle.li/archive/20 Me], I experienced Retreats with Maya, Marc and Urs, as well as more than one HomeMade and I am grateful for. [[File:G111_SaLome_KrachOMat.jpg|thumb|right]]

I bring an (indoor/outdoor) painting workstation to balance soul body and mind for the ones who like to color up. And if the lasercutter comes along (not urgent but of interest), I cut sound patterns in my paintings and build a soundscape. Just got a mixer plus a box and plenty of piezos and cables. That makes exploring about mixers, piezo networks and materials. Looking forward to meet sparring partners and workshops.

With us are coming paddle boards, an air castle, latex weather balloons ... and a set of tools for kids (&adults) workshops for printing and painting with Nature and recycling Materials, happy to be developed with interested ones together at Wartburg.

Wondering if a flea market for DIY build projects and all kind of parts might of interest? Saturdays? I’m interested to collect certain projects and give away some others, anyone else? ( – sorry this should be at the other plattform I guess, but I miss the group on telegram, being not ready yet – but in wiki I can now participainting, juhee..) Looking forward to grow with you at this HomeMade Festival.

=== Johann ===

I was invited by maja and am super grateful to be able to take part in Homemade 2025!
I have no real experience in soldering and am looking forward to learning a few basics.

=== El RIDO ===

Even though I live close to the Bitwäscherei I rarely manage to drop by. I'd like to bring my Behringer MS-1 and TD-3 Synths and finally practice and learn to use them properly - hope I can glean some tips and tricks from more knowledgeable synth-players.

Will also bring some Wifi-capable ESP8266 and ESP32 microcontroller boards and various sensors to toy with and a notebook with [https://github.com/elrido my software projects]. I can offer to hold a workshop or ad-hoc sessions to introduce folks to programming microcontrollers using Arduino IDE or Platform.io using C/C++, as well as CLI tools or webservices using Python or Rust, if anyone is interested.

Would also enjoy going for hikes or a swim in the lake.

=== Ralf S. ===
Together with Uwe S., we are continuing to work on the DBM (death battery music) synthesizer. We are also continuing the Stepper-Motor-Synth Project from last Homemade 2024...

=== Liora ===
I will bring my work with mycelium and I would like to work on combining it with electronics/music.
Potentially in collaboration with people from Hackuarium Lausanne.
Otherwise join/run workshops and learn new things, enjoy the area, meet interesting people, I will let myself be surprised!
Also I will be cycling there from Lausanne area, but maybe not all the way. We will see

=== SimonF ===
* Flying shark blimp thingy with FPV (if the weather is good)
* Flipdot display bridged to meshtastic to show some realtime stats of homemade
* Lake temperature sensor with meshtastic (see above)
* RC planes with floats and flying boats for some flying fun
* Sony watchman (portable CRT tv) to turn into a portable gaming console

=== Simon S./ der Warst ===

Musicsculpturevideoglitchmediaartcircuitbendingetc. lkjsaehöfoj!

I'm gonna bring a nice collection of my circuit bent audio and video things to work on, show off, and play.

PROJECTS! 
Aaaah too many, still sorting!
I'll probably bring my Gl0tchbl0K-PS2, for making it even glitchier. Maybe also some HDMI video gear to circuit bend. Or one of those Repeater Walkmen that I've tried to circuit bend for ages. Or I'm gonna find something spontaneously.

WORKSHOP! 
I'll bring a bunch of Kiddiecams for you to circuit bend in a fun, but terrifyingly fiddly workshop. If you wanna join, please consider bringing a micro SD card up to 32 Gigs and a willingness to go through SMD soldering Hell!
https://schaefersimon.de/portfolio/crazycams/

Also, I'll bring a bunch of my Gl0tchpatches, that make circuit bending TSOP-50 or TSOP-54 RAMs A LOT easier. If you plan bending anything involving those chips, I can help!

LOOKING FOR! 
Code buddies. Quite a few of my projects involve code, but I can't for the life of me concentrate on that shit. So if you can help me with a thing or two, I'd be super greatful!

=== Michi from [ a n y m a ] ===

https://www.anyma.ch/

I will bring the latest prototype of the '''Aetzbox'''-Mark II (diesmal vielleicht sogar dicht ™) mobile circuit etching kit for endurance testing. https://github.com/mirdej/etchingbox
Also the newest '''Peepsy-Pro''' boards for an easy and rewarding SMD soldering workshop (also for beginners!). Another workshop: I have been doing quite some wireless communication between various ESP32 using ESP-NOW and would love to present the „'''Agora'''“ - an Arduino library I am working on that simplifies pairing of ESP32s and communication. https://github.com/mirdej/Agora

I could need some help getting a small Xcode project to compile (again).

=== ronnie ===

Trying to progress at my re-construction of https://gregdavill.com/posts/d20/ . i.e. mostly coding FPGA, ESP32 or working on a new PCB for the controller.
Preview is here https://youtube.com/shorts/XpgeAQI-wB0?si=S_PH34zEw6hdlLZc

=== Rachel ===

I am still active in Hackuarium, although Esther is president of the Association now.
https://wiki.hackuarium.ch/w/User:Rachel

Looking forward to telling you something about my worm genetics project, our mycelia for bees project, the lake water quality project, and trying to get the old 'mossophone' up and running for our upcoming 'version 2' of the old Living Instruments project at Hackuarium, during this special Summer Camp... (We were invited to do a special event at a local museum for 'la Nuit des musées' here in late September! =) I got the Capacitance sensor to work well with the moss, but wonder if we can find an easy way to make this 'data' set off sounds together? (Our sound guy, Robert, uses a special MaxMSP patch for sounds, but I don't have this...)

'''Wondering if anyone is interested in getting mycelia plates (Fomes fomentarius, Panellus stipticus ?) ?
Bringing x2 'biomaterial hearts' made with those mycelia on birchwood (from the #mycelia4bees project) to put up and see if the bees come, and x8 o[https://wiki.hackuarium.ch/w/Foldscope Foldscope] kits to make together...'''

Will come for just the first two nights, with Esther and Pauline (new bioart member esp keen on the mycelia), and were planning to put more info in here, but... Let's see.

Planning to bring some extra fun synthesizers, and some LED things, made with Mitch Altmann, too...

Thanks in advance, and think it will be great to be back for a summer camp with you!

=== Gabrielle ===

Coming from London, hoping to make new electronic music machines, jams with small groups of people, recording music with small groups of people and hiking and walking. I am bringing my set-up which is a saxophone, underwater microphone, and pedals etc. I studied cognitive neuroscience and have brain data (MRI and EEG), and access to mental health assessments. I am also a piercer and will bring some piercing equipment and happy to give some free piercings (lobes, rook, conch, eyebrow, helix, belly button) and maybe to try to use needles in a project some how.

=== Aaron ===

As a Bitwäscherei resident, I have the possibility to bring a lot of stuff, and I'm Happy to share :)

Among many other things, I'm into RC-controlled toys and will try to focus on ships – On water (sailboat) and air (Led Zeppelin).

I'll bring:

- My work computer. (If you have a question about lasercutters - that counts as work :))

- A small 5W diode laser, capable of cutting cardboard and wood

- A Galvo Fiber laser for metals (Gweike G2 Pro) -> to mark your tools or etch PCBs.

- A ''small'' desktop CNC mill

I'll give workshops on how to use them, if wanted! ◡̈

- Two filament 3D printers from Bitwäscherei and loads of filament.

- An SLA 3D printer and tough resin to print [https://www.ll.mit.edu/sites/default/files/other/doc/2022-09/TVO%20Technology%20Highlight%2041%20Toroidal%20Propeller.pdf MIT "toroidal propellers"]

- The box of epoxy resins, fiberglass and carbon to do repairs or build new models.

- A bunch of Radio-Control receivers, flight controllers, servos, FPV cams..

- The ceramics kiln (Only, if Abao makes me do it)

- Corinna's sewing machine to make a Spinnaker for the sailboat

Looking forward to an unforgettable, wild camp!

=== Corinna ===
I'm really excited for my first time at Home Made - big thanks to [https://www.youtube.com/@LittleGooseLabs ronnie] for showing me the ropes! I've only really dabbled a bit in electronics, to be honest. I've done some soldering at a Maker Faire or CCC, and a few DIY kits.

I'm really looking forward to getting stuck into a small personal project, having a bit of a play around and picking up some tips from everyone on site.

My project: It's a cute little nightlight with an MP3 player built in. It's got warm, dimmable LED lighting in a lion-shaped design, and simple button controls for playing music. Songs are stored on a SD card that you can swap in and out, and everything runs completely offline. It's powered via USB-C or battery. Great for a kid's room or as a thoughtful DIY gift.

=== @Sonda studio ===

Toru & Azusa

We had a camp (合宿) with Marc in Okinawa back in April 2020. But as you know, many programs were canceled, Five years later, we're finally here!
We'd love to learn more about this kind of camp and hope to create our own version in Japan. We're super interested in so many things: medicinal herbs, weeds, soil, minerals, plants and noise, electricity, frequencies, electromagnetic waves, geomagnetism, and life at sea! We're planning to use noise and molecular gastronomy techniques (like espuma!) to host a traditional Okinawan tea ceremony. also going to make some special things with traditional grass weaving techniques!

=== Monitronica ===
Hello! I'm Monika from S(love)nia and I like to hang out, have fun and power nap.
*My project is circuit bent web cameras for glitchy visuals.
*I'm bringing pens and safety pins to make crown cork badges workshop.
*I am also bringing some gifts from Electric Wonderland camp (Radiona maker space Zagreb) kitchen lab and Pohorje.
*I need to gather some crown corks and soda tabs for the badge workshop.
*I wanna meet interesting people and listen to amazing stories and do group power naps.
*The ex-yugo team will arrive on 2 avg by car with Jani and fšk.

=== jay mccloud ===

Music [https://www.mx3.ch/basscraft/]
Betatester for [https://www.eatingvoltage.com/]
At homemade tuesday evening to friday evening.
The only good system is a sound system!

=== Tobias (kiilo) & Niels(9) ===
We will stay from 07-10.08
* Hello we bring 10 Servos & Arduino trying to make a robo dog walk.
* Having some ideas about it. Also some rocketmotors & starter (our rocket got lost).
* Niels is a trained drummer, ready for sessions.

=== Christoph Zimmermann (nuess0r) ===

Interested in 3D and VR stuff (next to lots of other interests)

I'll bring my Nikon DSLR with Loreo stereoscopic lenses and a Oculus Quest 2 to view the images.

It's quite fresh that this is so easily possibly. Using only the browser in the VR headset and officially agreed web standards by W3C.

Example page: https://devel.brain4free.cyon.site/doku.php/3d_photos:badragartz2024

=== Corinna Mattner (Coco) ===

I came only for the last days, without preparation, but it was so cool to see you all, even if I didnt really perform or joined any workshops

=== Doris A and Julien B ===

Recording, living, cooking and discuss are our pratrice during thhis week.
Meanwhule, we discuss about our project and 'music' band "eauchaude"https://feu-follet.org/presentation/eauchaude and https://eauchaude.bandcamp.com/

=== Lucyenne and Marco ===

We spent a few days at Hommade, meeting old friends and getting to know many new people through their projects.
We offered relaxing experiments with cyano on paper and textiles and brought along the ingredients for the *Ultimately Custom Hommade Bag*.

After all the rain a few days before, mushrooms were sprouting in the forests around Wartburg... on a mushroom hunt, we came across the giant porcini mushrooms.
[[File:20250808 121530.jpg|thumb]]

HOME MADE 2025 Fields Of Results

2025-08-17T14:00:30Z

SaLome: /* Intro: Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:59:18Z

SaLome: /* Intro: Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:57:56Z

SaLome: /* Intro: Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:56:59Z

SaLome: /* Intro: Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:54:17Z

SaLome: /* Intro: Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:52:38Z

SaLome: /* [SaLome, Projects: installation, workshops, concert] */

HOME MADE 2025 Fields Of Results

2025-08-17T13:52:00Z

SaLome: /* The Fields of Homemade 2025 and Homemade Documentations */

HOME MADE 2025 Fields Of Results

2025-08-17T13:49:33Z

SaLome: /* Intro: Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:45:24Z

SaLome: /* The Fields of Homemade 2025 and Homemade Documentations */

HOME MADE 2025 Fields Of Results

2025-08-17T13:42:13Z

SaLome: /* [SaLome, Projects: installtaion, workshops, concert] */

HOME MADE 2025 Fields Of Results

2025-08-17T13:41:24Z

SaLome: /* [SaLome,projects] */

HOME MADE 2025 Fields Of Results

2025-08-17T13:40:11Z

SaLome: /* I love Fields of Homemade 2025 and Homemade Documentations */

HOME MADE 2025 Fields Of Results

2025-08-17T13:27:27Z

SaLome: /* Homemade Fields of Results 2025 */

HOME MADE 2025 Fields Of Results

2025-08-17T13:26:34Z

SaLome: /* Homemade Fields of Results 2025 */

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]

'''It´s so interesting how productive the Field of Homemade sourced by OrgaTeam Magic & Crew Power is.
Concerts & Party was hot summer like. What I missed a bit is the show of the mecha stuff!
So call for documentations should not be a orga team thing, but a crew thing honoring Homemade Filed of dynamic & progress.

Pleas, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

'''
 

==I love Fields of Homemade 2025 and Homemade Documentations==

=== remember crew power ===

=== a ===
It's my first wiki page, I set up

=== b ===

Hello very happy to join

HOME MADE 2025 Fields Of Results

2025-08-17T13:20:34Z

SaLome:

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

== Homemade Fields of Results 2025 ==

[[File:2025_FieldsOfResults_s.jpg|thumb]]
 

'''It´s so interesting how productive the Field of Homemade sourced by OrgaTeam Magic & Crew Power is.
Concerts & Party was hot summer like. What I missed a bit is the show of the mecha stuff!
So call for documentations should not be a orga team thing, but a crew thing honoring Homemade Filed of dynamic & progress.

Pleas, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

'''

==I love Fields of Homemade 2025 and Homemade Documentations==

=== remember crew power ===

=== a ===
It's my first wiki page, I set up

=== b ===

Hello very happy to join

HOME MADE 2025 Fields Of Results

2025-08-17T13:17:47Z

SaLome:

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

[[File:2025_FieldsOfResults_s.jpg|thumb]]

It´s so interesting how productive the Field of Homemade sourced by OrgaTeam Magic & Crew Power is.
Concerts & Party was hot summer like. What I missed a bit is the show of the mecha stuff!
So call for documentations should not be a orga team thing, but a crew thing honoring Homemade Filed of dynamic & progress.

Pleas, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

==I love Fields of Homemade 2025 and Homemade Documentations==

=== remember crew power ===

=== a ===
It's my first wiki page, I set up

=== b ===

Hello very happy to join

HOME MADE 2025 Fields Of Results

2025-08-17T13:15:33Z

SaLome:

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

[[File:2025_FieldsOfResults_s.jpg]]

It´s so interesting how productive the Field of Homemade sourced by OrgaTeam Magic & Crew Power is.
Concerts & Party was hot summer like. What I missed a bit is the show of the mecha stuff!
So call for documentations should not be a orga team thing, but a crew thing honoring Homemade Filed of dynamic & progress.

Pleas, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

==I love Fields of Homemade 2025 and Homemade Documentations==

=== remember crew power ===

=== a ===
It's my first wiki page, I set up

=== b ===

Hello very happy to join

File:2025 FieldsOfResults s.jpg

2025-08-17T13:10:20Z

SaLome:

HOME MADE 2025 Fields Of Results

2025-08-17T13:09:48Z

SaLome: Created page with "<--- Back to HOME MADE 2025 <--- Back to HOME MADE 2025 Participants left It´s so interesting how productive the Field of Homemade sourced by OrgaTeam Magic & Crew Power is. Concerts & Party was hot summer like. What I missed a bit is the show of the mecha stuff! So call for documentations should not be a orga team thing, but a crew thing honoring Homemade Filed of dynamic & progress. Pleas, feel free documenting you..."

<--- Back to [[HOME MADE 2025]]
<--- Back to [[HOME MADE 2025 Participants]]

[[File:2025_FieldsOfResults_s.jpg|thumb|left]]

It´s so interesting how productive the Field of Homemade sourced by OrgaTeam Magic & Crew Power is.
Concerts & Party was hot summer like. What I missed a bit is the show of the mecha stuff!
So call for documentations should not be a orga team thing, but a crew thing honoring Homemade Filed of dynamic & progress.

Pleas, feel free documenting your projects, errors & slight progresses to make together a bigger picture of the Field of Homemade 2025 visible.

Just few notes doing are precious.

==I love Fields of Homemade 2025 and Homemade Documentations==

=== remember crew power ===

=== a ===
It's my first wiki page, I set up

=== b ===

Hello very happy to join

File:2025 FieldsOfResults.jpg

2025-08-17T13:09:41Z

SaLome: File uploaded with MsUpload

File uploaded with MsUpload

HOME MADE 2025 Participants

2025-07-21T10:06:23Z

SaLome: /* SaLome */

<--- Back to [[HOME MADE 2025]]

PLEASE write a few words about yourself, and link to some info about your works and interests.

Then also add ideas what you want to work on, learn from others, or can share with the participant community.

==I am coming!==

=== @tamberg ===
* Walking there from Zürich

=== dusjagr ===
Who am I: http://bio.dusseiller.ch
[[File:hagenazi.jpg|thumb|200px|left]][[File:weilding.png|thumb|right]]

* etch some PCBs...
* a bit of vibe coding
* collaborate on hydrogen production, sonified air-ships and underwater zeppelin research
* Hopefully can manage to get my boat ([https://en.wikipedia.org/wiki/Weidling_(boat) Weidling]) there
 

=== oli w ===
* Will try to monitor (electric) power consumption (and production?) of the entire Homemade 2025 (using power meters with [https://www.home-assistant.io/integrations/zha/ Zigbee] / [https://tasmota.github.io/docs/ Tasmota] / MQTT built in) and display in real time using [https://www.home-assistant.io/ Home Assistant], so we get a grasp :) Who is in to help set up a dashboard?
* Could arrange a visit to [https://bodensee-planetarium.ch Bodensee Planetarium und Sternwarte] in Kreuzlingen, if people are interested. (The observatory has a heliostat and telescope where you can see the Sun's spectral lines, prominences etc. :)

=== fšk ===

Hello, my name is Boštjan, I'm a media artist based in Ljubljana. My art usually involves technology in some way or another. Usually software or hardware. You can find out more about it [https://bostjancadez.art here]. The last 4.5 years I have been focusing on making a VR version of Line Rider. I'm looking forward to meeting some geeks/nerds like myself and seeing what they are up to \o/.
* Will probably be designing levels for my VR game. I need to finish it and get my life back :)
But that is not set in stone. So I dunno...

=== Miranda and Urs ===
SOLAR AND RENEWABLES WORKING GROUP
We will continue on the energy research, particularly working with Michel on projects related to the school in Cameroon https://sokolo.cronopios.org/ Anyone interested in energy, agriculture and sustainable tech please do join us!
[[File:Solar-reflow-cameroon.jpg|thumb]]

We also plan to organise some screenprinting equipment and materials to make 20 years Homemade tshirts. All welcome to bring a tshirt and PIY (print it Yourself).

For jams, Will bring: a mixer and a mic.

=== noisio ===

* Arriving on 3rd of August in the evening
* Will nerd on some recent prototypes: μMixa, RP2040 BassSynth, SHAGGA-Controller, FM-Transmitter
* Can offer workshops all around the clock: https://noisio.de/
* Let's make some noise together!

=== ... Tati ===
a visual artist working in the field of performance art
staying all the 9 days helping fsk
without thinking ...

=== [https://instagram.com/vali_ship/ '''@vali_ship'''] ===
* Data & random visuals & projections

=== @ganda1f ===
* Arriving August 1st together with my son Max (13yo)
* Mobile sound system experimentation
* UV light spectrum visualization
* Aura harvesting

=== Olj ===
* bring some synth / sound stuff and a mixer
* plan to do some experiments / research with starving synth
* working with video synths
* looking forward to jam together

=== Abao ===
'''I am making'''
* I am developing a graphical and transparent DSSC configuration, [https://www.hackteria.org/wiki/Abao_KUBU_residency#W-type_DSSC_configuration we made a starvation synth with Marc] I can give workshop if anyone wants to make it!
[[File:DSSC starvation synth.jpg|thumb|right]]
* [https://github.com/shihweichieh2023/Teensy-4-galvos/ DIY 405nm galvanometer laser system]

'''I am planning to make (a bit difficult to make it happen in the camp but let's talk about it with beers)'''
* DIY CO2 galvanometer laser system
* DSSC based [https://cameramaker.se/Lightfield.htm light field camera] by adding MLA (micro lens array) on top of DSSC array.
* nano-fabricated sub-wavelength gratings on conductive glass for DSSC sunglasses startup future.

'''I will bring'''
* [https://shihweichieh.com/Laser-dye-index Laser dye station]
* DSSC station

'''I need equipments'''
* [https://ebay.us/m/EE1NRX Ceramic Electric Cooktop]
* 3D printers
* A dark room or space (no need to be completely dark) in 1.5x1.5x1.5 meters.
* [https://www.ebay.com/b/Corded-Electric-Heat-Guns/66797/bn_115898228 heat gun]
* CO2 laser cutter

=== Markus S. ===
* Programming (Arduino / Processing / Sonic Pi)
* if mechanic works until homemade: BeerPongIno
* Swimming
* Hiking

=== Jena J. ===
* Circuit bending & DIY synth hacking
* Noise maker using weird connections + recycled tech
* Sound walks focused on nature and bird songs
* Touring musician — solo album : 🎧 ‘Final Day’ [https://jenajang.bandcamp.com/album/final-day]
* More info : [https://jenajang.com/]

=== SaLome ===
[https://werken.halle.li/archive/20 Me], I experienced Retreats with Maya, Marc and Urs, as well as more than one HomeMade and I am grateful for. [[File:G111_SaLome_KrachOMat.jpg|thumb|right]]

I bring an (indoor/outdoor) painting workstation to balance soul body and mind for the ones who like to color up. And if the lasercutter comes along (not urgent but of interest), I cut sound patterns in my paintings and build a soundscape. Just got a mixer plus a box and plenty of piezos and cables. That makes exploring about mixers, piezo networks and materials. Looking forward to meet sparring partners and workshops.

With us are coming paddle boards, an air castle, latex weather balloons ... and a set of tools for kids (&adults) workshops for printing and painting with Nature and recycling Materials, happy to be developed with interested ones together at Wartburg.

Wondering if a flea market for DIY build projects and all kind of parts might of interest? Saturdays? I’m interested to collect certain projects and give away some others, anyone else? ( – sorry this should be at the other plattform I guess, but I miss the group on telegram, being not ready yet – but in wiki I can now participainting, juhee..) Looking forward to grow with you at this HomeMade Festival.

=== Johann ===

I was invited by maja and am super grateful to be able to take part in Homemade 2025!
I have no real experience in soldering and am looking forward to learning a few basics.

=== El RIDO ===

Even though I live close to the Bitwäscherei I rarely manage to drop by. I'd like to bring my Behringer MS-1 and TD-3 Synths and finally practice and learn to use them properly - hope I can glean some tips and tricks from more knowledgeable synth-players.

Will also bring some Wifi-capable ESP8266 and ESP32 microcontroller boards and various sensors to toy with and a notebook with [https://github.com/elrido my software projects]. I can offer to hold a workshop or ad-hoc sessions to introduce folks to programming microcontrollers using Arduino IDE or Platform.io using C/C++, as well as CLI tools or webservices using Python or Rust, if anyone is interested.

Would also enjoy going for hikes or a swim in the lake.

=== ... and YOU! ===

HOME MADE 2025 Participants

2025-07-21T10:04:12Z

SaLome: /* SaLome */

<--- Back to [[HOME MADE 2025]]

PLEASE write a few words about yourself, and link to some info about your works and interests.

Then also add ideas what you want to work on, learn from others, or can share with the participant community.

==I am coming!==

=== @tamberg ===
* Walking there from Zürich

=== dusjagr ===
Who am I: http://bio.dusseiller.ch
[[File:hagenazi.jpg|thumb|200px|left]][[File:weilding.png|thumb|right]]

* etch some PCBs...
* a bit of vibe coding
* collaborate on hydrogen production, sonified air-ships and underwater zeppelin research
* Hopefully can manage to get my boat ([https://en.wikipedia.org/wiki/Weidling_(boat) Weidling]) there
 

=== oli w ===
* Will try to monitor (electric) power consumption (and production?) of the entire Homemade 2025 (using power meters with [https://www.home-assistant.io/integrations/zha/ Zigbee] / [https://tasmota.github.io/docs/ Tasmota] / MQTT built in) and display in real time using [https://www.home-assistant.io/ Home Assistant], so we get a grasp :) Who is in to help set up a dashboard?
* Could arrange a visit to [https://bodensee-planetarium.ch Bodensee Planetarium und Sternwarte] in Kreuzlingen, if people are interested. (The observatory has a heliostat and telescope where you can see the Sun's spectral lines, prominences etc. :)

=== fšk ===

Hello, my name is Boštjan, I'm a media artist based in Ljubljana. My art usually involves technology in some way or another. Usually software or hardware. You can find out more about it [https://bostjancadez.art here]. The last 4.5 years I have been focusing on making a VR version of Line Rider. I'm looking forward to meeting some geeks/nerds like myself and seeing what they are up to \o/.
* Will probably be designing levels for my VR game. I need to finish it and get my life back :)
But that is not set in stone. So I dunno...

=== Miranda and Urs ===
SOLAR AND RENEWABLES WORKING GROUP
We will continue on the energy research, particularly working with Michel on projects related to the school in Cameroon https://sokolo.cronopios.org/ Anyone interested in energy, agriculture and sustainable tech please do join us!
[[File:Solar-reflow-cameroon.jpg|thumb]]

We also plan to organise some screenprinting equipment and materials to make 20 years Homemade tshirts. All welcome to bring a tshirt and PIY (print it Yourself).

For jams, Will bring: a mixer and a mic.

=== noisio ===

* Arriving on 3rd of August in the evening
* Will nerd on some recent prototypes: μMixa, RP2040 BassSynth, SHAGGA-Controller, FM-Transmitter
* Can offer workshops all around the clock: https://noisio.de/
* Let's make some noise together!

=== ... Tati ===
a visual artist working in the field of performance art
staying all the 9 days helping fsk
without thinking ...

=== [https://instagram.com/vali_ship/ '''@vali_ship'''] ===
* Data & random visuals & projections

=== @ganda1f ===
* Arriving August 1st together with my son Max (13yo)
* Mobile sound system experimentation
* UV light spectrum visualization
* Aura harvesting

=== Olj ===
* bring some synth / sound stuff and a mixer
* plan to do some experiments / research with starving synth
* working with video synths
* looking forward to jam together

=== Abao ===
'''I am making'''
* I am developing a graphical and transparent DSSC configuration, [https://www.hackteria.org/wiki/Abao_KUBU_residency#W-type_DSSC_configuration we made a starvation synth with Marc] I can give workshop if anyone wants to make it!
[[File:DSSC starvation synth.jpg|thumb|right]]
* [https://github.com/shihweichieh2023/Teensy-4-galvos/ DIY 405nm galvanometer laser system]

'''I am planning to make (a bit difficult to make it happen in the camp but let's talk about it with beers)'''
* DIY CO2 galvanometer laser system
* DSSC based [https://cameramaker.se/Lightfield.htm light field camera] by adding MLA (micro lens array) on top of DSSC array.
* nano-fabricated sub-wavelength gratings on conductive glass for DSSC sunglasses startup future.

'''I will bring'''
* [https://shihweichieh.com/Laser-dye-index Laser dye station]
* DSSC station

'''I need equipments'''
* [https://ebay.us/m/EE1NRX Ceramic Electric Cooktop]
* 3D printers
* A dark room or space (no need to be completely dark) in 1.5x1.5x1.5 meters.
* [https://www.ebay.com/b/Corded-Electric-Heat-Guns/66797/bn_115898228 heat gun]
* CO2 laser cutter

=== Markus S. ===
* Programming (Arduino / Processing / Sonic Pi)
* if mechanic works until homemade: BeerPongIno
* Swimming
* Hiking

=== Jena J. ===
* Circuit bending & DIY synth hacking
* Noise maker using weird connections + recycled tech
* Sound walks focused on nature and bird songs
* Touring musician — solo album : 🎧 ‘Final Day’ [https://jenajang.bandcamp.com/album/final-day]
* More info : [https://jenajang.com/]

=== SaLome ===
[https://werken.halle.li/archive/20 Me], I experienced Retreats with Maya, Marc and Urs, as well as more than one HomeMade and I am grateful for. [[File:G111_SaLome_KrachOMat.jpg|thumb|right]]

I bring an (indoor/outdoor) painting workstation to balance soul body and mind for the ones who like to color up. And if the lasercutter comes along (not urgent but of interest), I cut sound patterns in my paintings and build a soundscape. Just got a mixer plus a box and plenty of piezos and cables. That makes exploring about mixers, piezo networks and materials. Looking forward to meet sparring partners and workshops.

With us are coming paddle boards, an air castle, latex weather balloons ... and a set of tools for kids (&adults) workshops for printing and painting with Nature and recycling Materials, happy to be developed with interested ones together at Wartburg.

Wondering if a flea market for DIY build projects and all kind of parts might of interest? Saturdays? I’m interested to collect certain projects and give away some others, anyone else? ( – sorry this should be at the other plattform I guess, but I miss the group on telegram, being not ready yet – but in wiki I can now participainting, juhee..) Looking forward to grow with you at this homeMade Festival.

=== Johann ===

I was invited by maja and am super grateful to be able to take part in Homemade 2025!
I have no real experience in soldering and am looking forward to learning a few basics.

=== El RIDO ===

Even though I live close to the Bitwäscherei I rarely manage to drop by. I'd like to bring my Behringer MS-1 and TD-3 Synths and finally practice and learn to use them properly - hope I can glean some tips and tricks from more knowledgeable synth-players.

Will also bring some Wifi-capable ESP8266 and ESP32 microcontroller boards and various sensors to toy with and a notebook with [https://github.com/elrido my software projects]. I can offer to hold a workshop or ad-hoc sessions to introduce folks to programming microcontrollers using Arduino IDE or Platform.io using C/C++, as well as CLI tools or webservices using Python or Rust, if anyone is interested.

Would also enjoy going for hikes or a swim in the lake.

=== ... and YOU! ===

HOME MADE 2025 Participants

2025-07-21T10:01:14Z

SaLome: /* SaLome */

<--- Back to [[HOME MADE 2025]]

PLEASE write a few words about yourself, and link to some info about your works and interests.

Then also add ideas what you want to work on, learn from others, or can share with the participant community.

==I am coming!==

=== @tamberg ===
* Walking there from Zürich

=== dusjagr ===
Who am I: http://bio.dusseiller.ch
[[File:hagenazi.jpg|thumb|200px|left]][[File:weilding.png|thumb|right]]

* etch some PCBs...
* a bit of vibe coding
* collaborate on hydrogen production, sonified air-ships and underwater zeppelin research
* Hopefully can manage to get my boat ([https://en.wikipedia.org/wiki/Weidling_(boat) Weidling]) there
 

=== oli w ===
* Will try to monitor (electric) power consumption (and production?) of the entire Homemade 2025 (using power meters with [https://www.home-assistant.io/integrations/zha/ Zigbee] / [https://tasmota.github.io/docs/ Tasmota] / MQTT built in) and display in real time using [https://www.home-assistant.io/ Home Assistant], so we get a grasp :) Who is in to help set up a dashboard?
* Could arrange a visit to [https://bodensee-planetarium.ch Bodensee Planetarium und Sternwarte] in Kreuzlingen, if people are interested. (The observatory has a heliostat and telescope where you can see the Sun's spectral lines, prominences etc. :)

=== fšk ===

Hello, my name is Boštjan, I'm a media artist based in Ljubljana. My art usually involves technology in some way or another. Usually software or hardware. You can find out more about it [https://bostjancadez.art here]. The last 4.5 years I have been focusing on making a VR version of Line Rider. I'm looking forward to meeting some geeks/nerds like myself and seeing what they are up to \o/.
* Will probably be designing levels for my VR game. I need to finish it and get my life back :)
But that is not set in stone. So I dunno...

=== Miranda and Urs ===
SOLAR AND RENEWABLES WORKING GROUP
We will continue on the energy research, particularly working with Michel on projects related to the school in Cameroon https://sokolo.cronopios.org/ Anyone interested in energy, agriculture and sustainable tech please do join us!
[[File:Solar-reflow-cameroon.jpg|thumb]]

We also plan to organise some screenprinting equipment and materials to make 20 years Homemade tshirts. All welcome to bring a tshirt and PIY (print it Yourself).

For jams, Will bring: a mixer and a mic.

=== noisio ===

* Arriving on 3rd of August in the evening
* Will nerd on some recent prototypes: μMixa, RP2040 BassSynth, SHAGGA-Controller, FM-Transmitter
* Can offer workshops all around the clock: https://noisio.de/
* Let's make some noise together!

=== ... Tati ===
a visual artist working in the field of performance art
staying all the 9 days helping fsk
without thinking ...

=== [https://instagram.com/vali_ship/ '''@vali_ship'''] ===
* Data & random visuals & projections

=== @ganda1f ===
* Arriving August 1st together with my son Max (13yo)
* Mobile sound system experimentation
* UV light spectrum visualization
* Aura harvesting

=== Olj ===
* bring some synth / sound stuff and a mixer
* plan to do some experiments / research with starving synth
* working with video synths
* looking forward to jam together

=== Abao ===
'''I am making'''
* I am developing a graphical and transparent DSSC configuration, [https://www.hackteria.org/wiki/Abao_KUBU_residency#W-type_DSSC_configuration we made a starvation synth with Marc] I can give workshop if anyone wants to make it!
[[File:DSSC starvation synth.jpg|thumb|right]]
* [https://github.com/shihweichieh2023/Teensy-4-galvos/ DIY 405nm galvanometer laser system]

'''I am planning to make (a bit difficult to make it happen in the camp but let's talk about it with beers)'''
* DIY CO2 galvanometer laser system
* DSSC based [https://cameramaker.se/Lightfield.htm light field camera] by adding MLA (micro lens array) on top of DSSC array.
* nano-fabricated sub-wavelength gratings on conductive glass for DSSC sunglasses startup future.

'''I will bring'''
* [https://shihweichieh.com/Laser-dye-index Laser dye station]
* DSSC station

'''I need equipments'''
* [https://ebay.us/m/EE1NRX Ceramic Electric Cooktop]
* 3D printers
* A dark room or space (no need to be completely dark) in 1.5x1.5x1.5 meters.
* [https://www.ebay.com/b/Corded-Electric-Heat-Guns/66797/bn_115898228 heat gun]
* CO2 laser cutter

=== Markus S. ===
* Programming (Arduino / Processing / Sonic Pi)
* if mechanic works until homemade: BeerPongIno
* Swimming
* Hiking

=== Jena J. ===
* Circuit bending & DIY synth hacking
* Noise maker using weird connections + recycled tech
* Sound walks focused on nature and bird songs
* Touring musician — solo album : 🎧 ‘Final Day’ [https://jenajang.bandcamp.com/album/final-day]
* More info : [https://jenajang.com/]

=== SaLome ===
[https://werken.halle.li/archive/20 Me], I experienced Retreats with Maya, Marc and Urs, as well as more than one HomeMade and I am grateful (tanks for this word (1.5.)) for. [[File:G111_SaLome_KrachOMat.jpg|thumb|right]]

I bring an (indoor/outdoor) painting workstation to balance soul body and mind for the ones who like to color up. And if the lasercutter comes along (not urgent but of interest), I cut sound patterns in my paintings and build a soundscape. Just got a mixer plus a box and plenty of piezos and cables. That makes exploring about mixers, piezo networks and materials. Looking forward to meet sparring partners and workshops.

With us are coming paddle boards, an air castle, latex weather balloons ... and a set of tools for kids (&adults) workshops for printing and painting with Nature and recycling Materials, happy to be developed with interested ones together at Wartburg.

Wondering if a flea market for DIY build projects and all kind of parts might of interest? Saturdays? I’m interested to collect certain projects and give away some others, anyone else? ( – sorry this should be at the other plattform I guess, but I miss the group on telegram, being not ready yet – but in wiki I can now participainting, juhee..) Looking forward to grow with you at this homeMade Festival.

=== Johann ===

I was invited by maja and am super grateful to be able to take part in Homemade 2025!
I have no real experience in soldering and am looking forward to learning a few basics.

=== El RIDO ===

Even though I live close to the Bitwäscherei I rarely manage to drop by. I'd like to bring my Behringer MS-1 and TD-3 Synths and finally practice and learn to use them properly - hope I can glean some tips and tricks from more knowledgeable synth-players.

Will also bring some Wifi-capable ESP8266 and ESP32 microcontroller boards and various sensors to toy with and a notebook with [https://github.com/elrido my software projects]. I can offer to hold a workshop or ad-hoc sessions to introduce folks to programming microcontrollers using Arduino IDE or Platform.io using C/C++, as well as CLI tools or webservices using Python or Rust, if anyone is interested.

Would also enjoy going for hikes or a swim in the lake.

=== ... and YOU! ===

HOME MADE 2025 Participants

2025-07-17T14:22:56Z

SaLome: /* I am coming! */

<--- Back to [[HOME MADE 2025]]

PLEASE write a few words about yourself, and link to some info about your works and interests.

Then also add ideas what you want to work on, learn from others, or can share with the participant community.

==I am coming!==

=== @tamberg ===
* Walking there from Zürich

=== dusjagr ===
Who am I: http://bio.dusseiller.ch
[[File:hagenazi.jpg|thumb|200px|left]][[File:weilding.png|thumb|right]]

* etch some PCBs...
* a bit of vibe coding
* collaborate on hydrogen production, sonified air-ships and underwater zeppelin research
* Hopefully can manage to get my boat ([https://en.wikipedia.org/wiki/Weidling_(boat) Weidling]) there
 

=== oli w ===
* Will try to monitor (electric) power consumption (and production?) of the entire Homemade 2025 (using power meters with [https://www.home-assistant.io/integrations/zha/ Zigbee] / [https://tasmota.github.io/docs/ Tasmota] / MQTT built in) and display in real time using [https://www.home-assistant.io/ Home Assistant], so we get a grasp :) Who is in to help set up a dashboard?
* Could arrange a visit to [https://bodensee-planetarium.ch Bodensee Planetarium und Sternwarte] in Kreuzlingen, if people are interested. (The observatory has a heliostat and telescope where you can see the Sun's spectral lines, prominences etc. :)

=== fšk ===

Hello, my name is Boštjan, I'm a media artist based in Ljubljana. My art usually involves technology in some way or another. Usually software or hardware. You can find out more about it [https://bostjancadez.art here]. The last 4.5 years I have been focusing on making a VR version of Line Rider. I'm looking forward to meeting some geeks/nerds like myself and seeing what they are up to \o/.
* Will probably be designing levels for my VR game. I need to finish it and get my life back :)
But that is not set in stone. So I dunno...

=== Miranda and Urs ===
SOLAR AND RENEWABLES WORKING GROUP
We will continue on the energy research, particularly working with Michel on projects related to the school in Cameroon https://sokolo.cronopios.org/ Anyone interested in energy, agriculture and sustainable tech please do join us!
[[File:Solar-reflow-cameroon.jpg|thumb]]

We also plan to organise some screenprinting equipment and materials to make 20 years Homemade tshirts. All welcome to bring a tshirt and PIY (print it Yourself).

For jams, Will bring: a mixer and a mic.

=== noisio ===

* Arriving on 3rd of August in the evening
* Will nerd on some recent prototypes: μMixa, RP2040 BassSynth, SHAGGA-Controller, FM-Transmitter
* Can offer workshops all around the clock: https://noisio.de/
* Let's make some noise together!

=== ... Tati ===
a visual artist working in the field of performance art
staying all the 9 days helping fsk
without thinking ...

=== [https://instagram.com/vali_ship/ '''@vali_ship'''] ===
* Data & random visuals & projections

=== @ganda1f ===
* Arriving August 1st together with my son Max (13yo)
* Mobile sound system experimentation
* UV light spectrum visualization
* Aura harvesting

=== Olj ===
* bring some synth / sound stuff and a mixer
* plan to do some experiments / research with starving synth
* working with video synths
* looking forward to jam together

=== Abao ===
My wish lists to Santa:
* I am developing a graphical and transparent DSSC configuration, [https://www.hackteria.org/wiki/Abao_KUBU_residency#W-type_DSSC_configuration we made a starvation synth with Marc] I can give workshop if anyone wants to make it!
* 3PDMS based micro lens array made by 3d printers or
* DIY kiln with temperature control that can be portable.
* nano-fabricated sub-wavelength gratings on conductive glass.

=== Markus S. ===
* Programming (Arduino / Processing / Sonic Pi)
* if mechanic works until homemade: BeerPongIno
* Swimming
* Hiking

=== Jena J. ===
* Circuit bending & DIY synth hacking
* Noise maker using weird connections + recycled tech
* Sound walks focused on nature and bird songs
* Touring musician — solo album : 🎧 ‘Final Day’ [https://jenajang.bandcamp.com/album/final-day]
* More info : [https://jenajang.com/]

=== SaLome ===
[https://werken.halle.li/archive/20 Me], I experienced Retreats with Maya, Marc and Urs, as well as more than one HomeMade and I am happy having a daughter with Chris. [[File:G111_SaLome_KrachOMat.jpg|thumb|right]]

I bring an (outdoor) painting workstation to balance soul body and mind for the ones who like to color up. And if the lasercutter comes along (not urgent but of interest), I cut sound patterns in my paintings and build a soundscape. Just got a mixer plus a box and plenty of piezos and cables. That makes exploring about mixers, piezo networks and materials. Looking forward to meet sparring partners and workshops.

With us are coming paddle boards, an air castle, latex weather balloons ... and a set of tools for kids workshops for printing and painting with Nature and recycling Materials, happy to be developed with interested ones together at Wartburg.

Wondering if a flea market for DIY build projects and all kind of parts might of interest? Saturdays? I’m interested to collect certain projects and give away some others, anyone else? ( – sorry this should be at the other plattform I guess, but I miss the group on telegram, being not ready yet – but in wiki I can now participainting, juhee..) Looking forward to grow with you at this homeMade Festival.

=== ... and YOU! ===

File:G111 SaLome KrachOMat.jpg

2025-07-17T14:12:05Z

SaLome: File uploaded with MsUpload

File uploaded with MsUpload