Here's my Werkstatt finished (sorta) with a custom jack panel. I've added a voltage follower circuit to buffer incoming gate triggers to the envelope generator. VCO EXP IN, VCF IN, KB CV OUT, and EG OUT are routed directly to the header points. VCO out is normaled through output jack back into an additional mixer circuit along with the Audio Input. This makes it possible to either route the VCO through modules and back into the filter or bypass the VCF and VCA. I think this is how Steve Dunnington designed his audio input on the werkstatt prototype. The diode clip switch bypasses an added distortion circuit inserted between the VCF and VCA. The diode clip uses a pair of diodes to ground then goes into an additional opamp circuit. Because of the positioning of the jacks, i short changed the amount of usable space on the experimenter pads.
The components are cramped together and i had to place components on both sides in order to make it all fit. In hindsight, i'm not sure if I would recommend adding the jacks to the back panel, because there's not a lot of room to spare between the PCB and the case. The right side of the case would have made more sense, but the back seemed more "moog". This was a bit of work, but completely worth the effort to make the Werkstatt part of my modular rig.
and answers a question I had about the patch section: no gate input! How strange... Also, when I use the envelope from my Pittsburgh SynthBlock I just get a 'tick' not the full envelope. Is there a publish spec for the voltages of each in/out of the patch section?
