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Polykit<p>Here is a first demo of my Eurorack sequencer. Happy Sunday!<br>Youtube: <a href="https://youtube.com/shorts/KIN2WQEZNrk" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">youtube.com/shorts/KIN2WQEZNrk</span><span class="invisible"></span></a><br>Peertube: <a href="https://makertube.net/w/aFaN4e9nm6s5Ws419X5tSV" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">makertube.net/w/aFaN4e9nm6s5Ws</span><span class="invisible">419X5tSV</span></a><br><a href="https://chaos.social/tags/eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eurorack</span></a> <a href="https://chaos.social/tags/sequencer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sequencer</span></a> <a href="https://chaos.social/tags/analog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>analog</span></a> <a href="https://chaos.social/tags/modular" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modular</span></a> <a href="https://chaos.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://chaos.social/tags/synth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synth</span></a></p>
Titus von der Malsburg 📖👀💭<p>What's the easiest way to produce a voltage between -8V and +8V with an <a href="https://scholar.social/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>arduino</span></a>? <a href="https://scholar.social/tags/eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eurorack</span></a> <a href="https://scholar.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://scholar.social/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a></p>
craque is icumen in 🏳️‍🌈<p>Aaaaah! Yeeeeha it works!</p><p>The two pedals I've completed inside now have their LED outputs routed to the dome lamp. This will change color as I add more pedals.</p><p><a href="https://c.im/tags/craque" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>craque</span></a> <a href="https://c.im/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a></p>
diyelectromusic<p>And this is the serial MIDI version of part 4, but this time I'm back with the original XIAO ESP32-C3.</p><p><a href="https://diyelectromusic.com/2025/06/28/xiao-esp32-c3-midi-synthesizer-part-5/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">diyelectromusic.com/2025/06/28</span><span class="invisible">/xiao-esp32-c3-midi-synthesizer-part-5/</span></a></p><p><a href="https://mastodon.social/tags/MIDI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MIDI</span></a> <a href="https://mastodon.social/tags/XIAO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>XIAO</span></a> <a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a></p>
diyelectromusic<p>And part 4 goes back to using the XIAO SAMD21 in the XIAO Synth to create a simple synth module with buttons for voice selection and volume control.</p><p><a href="https://diyelectromusic.com/2025/06/27/xiao-esp32-c3-midi-synthesizer-part-4/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">diyelectromusic.com/2025/06/27</span><span class="invisible">/xiao-esp32-c3-midi-synthesizer-part-4/</span></a></p><p><a href="https://mastodon.social/tags/MIDI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MIDI</span></a> <a href="https://mastodon.social/tags/SAM2695" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SAM2695</span></a> <a href="https://mastodon.social/tags/XIAO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>XIAO</span></a> <a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a></p>
diyelectromusic<p>Using two Atari 2600 Keypad controllers as a MIDI controller.</p><p><a href="https://diyelectromusic.com/2025/06/26/arduino-atari-midi-keypad/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">diyelectromusic.com/2025/06/26</span><span class="invisible">/arduino-atari-midi-keypad/</span></a></p><p>cc <span class="h-card" translate="no"><a href="https://oldbytes.space/@rc2014" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rc2014</span></a></span> </p><p><a href="https://mastodon.social/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Arduino</span></a> <a href="https://mastodon.social/tags/MIDI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MIDI</span></a> <a href="https://mastodon.social/tags/Atari" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atari</span></a> <a href="https://mastodon.social/tags/Atari2600" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atari2600</span></a> <a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a></p>
Titus von der Malsburg 📖👀💭<p>Seems I'm slowly getting the hang of this soldering thing. <a href="https://scholar.social/tags/ElectronicsDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectronicsDIY</span></a> <a href="https://scholar.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://scholar.social/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a></p>
diyelectromusic<p>And, so finally, I've done something that at least hints of being musical with my Atari Paddles.</p><p>This shows how to use them as a MIDI CC controller.</p><p><a href="https://diyelectromusic.com/2025/06/23/arduino-midi-atari-paddles/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">diyelectromusic.com/2025/06/23</span><span class="invisible">/arduino-midi-atari-paddles/</span></a></p><p><a href="https://mastodon.social/tags/Atari" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atari</span></a> <a href="https://mastodon.social/tags/Atari2600" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atari2600</span></a> <a href="https://mastodon.social/tags/MIDI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MIDI</span></a> <a href="https://mastodon.social/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Arduino</span></a> <a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a></p>
Polykit<p>Together with a local carpenter I’m going to offer quality Eurorack cases at a very competitive price point. This is the prototype of a 104 HP case with two rows and oak side panels. The cases will be available later this year. Stay tuned! <a href="https://chaos.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://chaos.social/tags/synth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synth</span></a> <a href="https://chaos.social/tags/eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eurorack</span></a> <a href="https://chaos.social/tags/modular" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modular</span></a> <a href="https://chaos.social/tags/case" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>case</span></a></p>
Polykit<p>I think the sequencer turned out great! There were some minor issues on the PCB I was able to correct on the fly. Now to the programming, the basics are already there. <a href="https://chaos.social/tags/eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eurorack</span></a> <a href="https://chaos.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://chaos.social/tags/synth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synth</span></a> <a href="https://chaos.social/tags/analog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>analog</span></a> <a href="https://chaos.social/tags/modular" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modular</span></a></p>
botvolution<p>I cultivate a curious garden.</p><p><a href="https://mastodon.sdf.org/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a> <br><a href="https://mastodon.sdf.org/tags/DIYElectronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DIYElectronics</span></a></p>
Polykit<p>Prototype for the sequencer arrived. It’s my first module with some microcontroller. It will be possible to link multiple units for longer sequences and I think the CV options will make it quite fun 🤩 <a href="https://chaos.social/tags/eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eurorack</span></a> <a href="https://chaos.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://chaos.social/tags/synth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synth</span></a> <a href="https://chaos.social/tags/analog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>analog</span></a> <a href="https://chaos.social/tags/modular" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modular</span></a></p>
gnd<p>This is what I've been up to for the past months. RDRPT is a feedback looper, inspired by no-input mixing techniques and harsh noise. It's intense, chaotic and unforgiving. I enjoy it a lot.</p><p>How it was designed, schematics etc come out tomorrow on <a href="https://gnd.buzz" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">gnd.buzz</span><span class="invisible"></span></a></p><p>For now just wanted to share the looks 🖤</p><p><a href="https://merveilles.town/tags/theWorkshop" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>theWorkshop</span></a> <a href="https://merveilles.town/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://merveilles.town/tags/music" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>music</span></a> <a href="https://merveilles.town/tags/noise" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>noise</span></a></p>
gnd<p>Hi Merveilles, thanks for having me :)</p><p>I enjoy making music and noise, as well as putting together contraptions that help me with that: analog pedals and synths, a little bit of software.</p><p>Recently I've been trying to explore atonal and noise elements in music, improve my sound design chops and look for unusual movie soundtracks. Any pointers to artists and instruments in that realm would be appreciated!</p><p>Here are some of the records I've had a chance to participate in:</p><p>Cultured by Day Dress (post-hardcore / screamo): <a href="https://daydress.bandcamp.com/album/cultured" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">daydress.bandcamp.com/album/cu</span><span class="invisible">ltured</span></a></p><p>I II III by Dzierzynski Bitz (novy twist) <a href="https://open.spotify.com/album/43PZhz9sAdwtaDObFLx1qK?si=BVZpWQP3TJ-7IhGXh7pgKw" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">open.spotify.com/album/43PZhz9</span><span class="invisible">sAdwtaDObFLx1qK?si=BVZpWQP3TJ-7IhGXh7pgKw</span></a></p><p>Some of the devices I've made:</p><p>All Animation crossfader pedal: <a href="https://akkusativ.cc/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">akkusativ.cc/</span><span class="invisible"></span></a></p><p>Hypno delay: <a href="https://pedalmarkt.com/pages/delay" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">pedalmarkt.com/pages/delay</span><span class="invisible"></span></a></p><p>A polyrhythmic metronome web app I've made a while back: <a href="https://polychops.com" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">polychops.com</span><span class="invisible"></span></a></p><p>I'd like to do better at documenting what I do. Hence this new account and a video channel here: <a href="https://makertube.net/w/s1rLiRFGBmCoNzSgEnNEUx" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">makertube.net/w/s1rLiRFGBmCoNz</span><span class="invisible">SgEnNEUx</span></a> </p><p>That's pretty much it. Happy to be here!</p><p><a href="https://merveilles.town/tags/introduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>introduction</span></a> <a href="https://merveilles.town/tags/diy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>diy</span></a> <a href="https://merveilles.town/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://merveilles.town/tags/noise" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>noise</span></a> <a href="https://merveilles.town/tags/atonal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>atonal</span></a> <a href="https://merveilles.town/tags/music" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>music</span></a></p>
Tod Kurt (todbot)<p>I've made *many* little SynthDIY boards over the years, targeting: low-cost, for newbies, Pico &amp; CircuitPython. Here are some. <br>I've never been quite satisfied w/ the results. <br>Maybe the solution is more knobs &amp; more choc keyswitches?<br>Good idea?<br><a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a> <a href="https://mastodon.social/tags/RaspberryPiPico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RaspberryPiPico</span></a> <a href="https://mastodon.social/tags/CircuitPython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CircuitPython</span></a></p>
diyelectromusic<p>Wow this is a great resource if you want to get to know your Yamaha synth chips...</p><p><a href="https://gist.github.com/bryc/e85315f758ff3eced19d2d4fdeef01c5" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">gist.github.com/bryc/e85315f75</span><span class="invisible">8ff3eced19d2d4fdeef01c5</span></a></p><p>I seem to have access to YM2413, YM3812, YM3420, YM2414, YM2164 and if I can get my RC2014 sound card up and running maybe a YM2149 too :)</p><p><a href="https://mastodon.social/tags/FMSynthesis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FMSynthesis</span></a> <a href="https://mastodon.social/tags/Yamaha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Yamaha</span></a> <a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a></p>
flpvsk<p>Happy to host a workshop by <span class="h-card" translate="no"><a href="https://chaos.social/@noisio" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>noisio</span></a></span> on Sat June 28 at Pedal Markt in Berlin Neukölln</p><p>Build a Levitation Oscillator, Atari Punk Console and other midi/cv/sound devices!</p><p>Details and booking: <a href="https://pedalmarkt.com/collections/upcoming-workshops/products/28-06-2025-noisio-music-noise-devices-soldering-workshop" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">pedalmarkt.com/collections/upc</span><span class="invisible">oming-workshops/products/28-06-2025-noisio-music-noise-devices-soldering-workshop</span></a></p><p><a href="https://mastodon.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://mastodon.social/tags/electronicsdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronicsdiy</span></a> <a href="https://mastodon.social/tags/berlin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>berlin</span></a> <a href="https://mastodon.social/tags/berlinmusic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>berlinmusic</span></a></p>
Bornach<p>A so begins my journey into <a href="https://fosstodon.org/tags/Eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Eurorack</span></a> modular synthesis with a Voltage Controlled Oscillator as the first module installed in my DIY case. I've also made rudimentary adjustable legs that allow the case to be tilted to different angles.</p><p><a href="https://fosstodon.org/tags/synthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthDIY</span></a> <a href="https://fosstodon.org/tags/electronicMusic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronicMusic</span></a></p>
Tod Kurt (todbot)<p>For the last month or so I've been working on seeing how far I can push CircuitPython into emulating a TB-303 bass synth. With the new audiofilters library, you can "stack" filters to make two two-pole filters seem like a 4-pole filter, getting close to that squelchy sound we need. My efforts so far: <br><a href="https://www.youtube.com/watch?v=1AflpXbEIno" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=1AflpXbEIno</span><span class="invisible"></span></a><br><a href="https://mastodon.social/tags/circuitpython" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>circuitpython</span></a> <a href="https://mastodon.social/tags/tb303" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tb303</span></a> <a href="https://mastodon.social/tags/synthdiy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synthdiy</span></a> <a href="https://mastodon.social/tags/raspberrypipico" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>raspberrypipico</span></a></p>
diyelectromusic<p>An ESP32-S3 DevKitC prototyping board with MIDI, PWM audio output, potentiometers and its own power circuit.</p><p><a href="https://diyelectromusic.com/2025/05/25/esp32-s3-devkit-experimenter-pcb-design/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">diyelectromusic.com/2025/05/25</span><span class="invisible">/esp32-s3-devkit-experimenter-pcb-design/</span></a></p><p><a href="https://mastodon.social/tags/ESP32S3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ESP32S3</span></a> <a href="https://mastodon.social/tags/MIDI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MIDI</span></a> <a href="https://mastodon.social/tags/SynthDIY" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SynthDIY</span></a></p>