The new PCB’s are in, with some cool features!
New in this version:
-Extensive mod possibilities, all included in a handy 12pin header
-Trimpot for filter character
-The PCB is suitable for Eurorack or a 9v standalone synth.
OSC1 direct output
OSC2 direct output
OSC3 direct output
Switch 2 input 1
Switch 2 input 2
Switch 3 input 1
Switch 3 input 2
Switch 2 output
Switch 3 output
Buildguide for version 5 Eurorack: (If you can’t see it, press reload)
note: don’t place the trimpot on the backside, else it sticks out too much.
Older versions: v0.3 – 9v
IC 2 (CD4053) has a small bug . Pin 6, 9 and 10 should have been connected to GND, but are not.
Use a snipped off piece of resistor leg to connect these pins to GND. Pin 7 and 8 are GND.
So: bend the metal leg like shown in the above picture and solder it. (on the backside of the IC. make sure you connect the right pins!)
The bug is that , when powered by an adapter (9v or 12v), after a while the sound gets weird. This happens sometimes, but not always. This made the bug hard to trace 🙂