I use this schem for 2 CD4017
with this for And gate with diodes
Small feet’s case (… behind, my Fuby that I started to strip)
the switch and the hook for the mic
A little piece of velcro for the cable
with the mic (yeah! zebra 3 zebra 3 
)
some power 
light power !
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No, his French cousin 
Franck?ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
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I never knew his name, I adopted him.
But in any case he left for asylum.
After trying to replace the crystal with an LTC1799, he was in perpetual glitch until he couldn’t speak at all.
I see he is still alive because he is moving but the situation is critical.
I skalped it to make a kind of Frank Einstein taxidermy, and put his fur on another body.
The illusion will be there, but it won’t bring my … let’s call Franck now.
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Is now my favourite Einstein.
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Had a productive lunch break today:
Just need to make up an IDC cable with enough connecters, build the second VCO - solder the fixed up sub-osc, wait for the rev of my Nucleo ADSR to show up and build that - and finally will have to get the filter design up on a breadboard and eventually onto a PCB.
Cheers,
Jared
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It took me quite a while to find the problem. It was difficult to see (even with a magnifying glass) and also difficult to make a picture off. I found a hair thin tear in the vertical copper lane which left the center horizontal voltage float in stead of at 0V.
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I check all my solder point with a magnifying glass, but here it was almost invisible.
Good eyes Sherlock Holmes 
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I found it measuring voltages on various spots on the copper strip, then I found a voltage jump and saw a barely discernible tear and put some solder on it. Problem solved.
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Today I installed the new VCO in the case and I planned to make a video for my site, but after calibrating it I started patching a few modules, and in fact I spent two or three hours to enjoy with the sounds 
… maybe my video tomorrow
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looking good ! …
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I breadboarded a simple MIDI to CV circuit/script — it works!
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I have always worried about conditioning digital outputs from an arduino into CV. Are you using a DAC, are you needing to condition the current with an opamp? Im clueless about that stuff.
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That sounds soooooo familiar to me! 
Just “test” briefly how it sounds … 
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Yeah, this uses a DAC. The pitch CV is scaled to a larger range with a op amp, the velocity, pitch bend, and mod wheel aren’t scaled and maybe could go direct to output but at least for now they have op amp buffers.
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Hagiwo also did one recently
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Thank you.
Arduino’s midi library is very useful. The most difficult process for me was drilling 15mm hole for MIDI connectors.
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