And here is the #StackSynth power supply board done. It provides dual rail +/- 12 Volt from 12 Volt AC. Stable for at least 300 mA. The diodes D1 and D2 get a bit warm, though. I'll have to see how it performs with my modules attached.
Again, boards were manufactured by @aislerhq and arrived together with the VCA.
My StackSynth tower is almost finished so far. There will be a Noise module coming and maybe I'll add another LFO.
#soldering #diysynth #synthesizer #powersupply

And here's me trying to build a 2-pole version of it.

I heard in a video by Moritz Klein that electrolytic converters might not be the best choice because they don't like negative voltages, so I plugged in two 100nf capacitors for each stage in series. But somehow I would like a little more ooomph; as it is now, that circuit still lacks the character I got with the larger electrolytic capacitors I tried for the single pole version.
#DIYSynth #electronics

I finished building the module. I have to trim a few details, but the VCA+ADSR works, overall. Functional tests were passed #diysynth #electronics #music

Finished #soldering the #StackSynth #VCO after the missing resistors arrived today. The tuning knobs are a bit close for my taste. The next revision will have a wider gap between.
After tuning it to roughly 1 Volt per octave, I tried it with my #sequencer. The test setup only included VCO, LFO, and mixer, though. The VCA will be the next board.
https://makertube.net/w/xwhPj4tAb2BdmPDmQuVakv
#diysynth #synthesizer

As announced, I finished the buffer today. Also, I soldered all #SMD components to the #VCO board that I already had. The two missing resistors will follow when they arrive.
It was fun and went better than my previous attempts, since I used a smaller tip.
#diysynth #StackSynth #soldering #synthesizer

a longer demo of the #sequencer. I play around with some controls and have replaced the mixer and LFO with the available #StackSynth modules, mixing sawtooth and triangle waveforms of the perfboard VCO (will be replaced by one of the next StackSynth modules).
#diysynth #synthesizer
https://makertube.net/w/1SoLv9g8bagtud34Muejjk

All the wires have been crimped! This was very tedious and repetitive. But after the first few done, it went relatively smoothly.
I only had to make two wires longer.
Connector list:
- ten six-pin JST
- three two-pin JST
- one four-pin JST
- one ten-pin DuPont
It looks very cramped, but it works!
The steps are ordered columns first, like this:
1 3 5 7 9
2 4 6 8 10
Else, I would have needed to make more wires longer.
#diysynth #sequencer #electronics #crimping #cables

Next step finished: #soldering the #pcb that arrived this week.
I had to drill two holes that I forgot to add to the boards. But there was only the ground plane at that position.
Again, they were manufactured by @aislerhq
#diysynth #sequencer #electronics

And it's done. All wires that had to be soldered are soldered. What a mess. In German we have a word for that: "Kabelsalat" (cable salad).
My black wires are empty now.
The power switch has screw posts, so I have to crimp some shoes on the cables. Next is tying them together and crimping the connectors on the other ends of all the wires -.-
#soldering #diysynth #electronics #sequencer #cablemanagement #kabelsalat

First wires soldered. For future projects, I'll design a common power bus. But I'll stick with this now.
All potentiometers and switches for the ten steps have been wired.
#diysynth #electronics #sequencer #soldering