This circuit takes a continuously variable dc voltage and outputs only voltages related to each other musically, using the 1v/octave standard. It utilizes a preprogrammed PIC which is included with purchase of a PCB. It is has a very low parts count, requires no calibration, and is small enough to be used either as a separate synth module or as a daughter board to be attached to the input of an oscillator or output of a sequencer/s&h/other cv generator.

Demos, build documentation, drill guide, are available here.

The finished module shown is a two channel version using two PCBs.  If ordering a single PCB/Panel you'll receive a panel drilled for just a single panel.

Unfinished panels are drilled by hand in my garage, they are bare aluminum that may be scratched.  They are intended to be painted, etched or otherwise finished later.

Pre-Assembled Modules are built after the order comes in.  Build time can be a few days or a few weeks depending on what parts I have on hand.  When ordering, please leave a comment at checkout if you have preferences on what color(s) the panel is painted.