I’ve built my version and it looks like it’s working.
My version adds the following features:
- Two switch selectable capacitors for slower and faster time scales.
- Capacitors can be socketed for experimentation, soldered, or socketed at first and soldered later.
- Retriggering input, allowing additional attack/decay peaks on top of the sustain.
- Looping mode, allowing attack-decay envelopes to repeat as long as a gate is present, or, if nothing is plugged into the gate input, indefinitely. This can be used as a sequence of envelopes or as a kind of odd LFO.
Schematics, KiCad design files, Gerbers, and documentation available in GitHub repo.
I’ll have a few extra PCBs and panels up on Tindie one of these days.
