This is a compact keyboard the size of a synthesizer module. Octaves are selected by a knob with visual feedback on octave level
The switches and pots are mounted to the PCB, so the only offboard wiring is to the jacks. This allows the same PCB to be used in systems using any type of jacks while keeping wiring to a minimum. The PCB is compatible with +/-12V or +/-15V systems.
For complete descriptions of the way the module is used, and how to build it, including schematics and parts list; download this PDF file.
Boards are available now. Price for 1 PCB/PIC set is $18.
Unfinished eurorack
panels are available for this project, they are 10HP and cost $8 each.
There is
more information here about panels. If you're interested in drilling your own panel for
this project, feel free to use my
drill guide. That image should be printed at 300dpi for proper
scaling.