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 seperate 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.
The PCB mounts to the panel via potentiometer. It is compatable with 12V or 15V systems. It was initially powered on a single 9V battery while testing, so it is also compatible with unipolar systems.
For Troubleshooting common
problems see this
page.
If you have a rev 2.0 board, here
is the old documentation on that.
If you have a rev 4.0 board,
here
is the old documentation on that.
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 and PICs available now. Price for 1 PCB/PIC is $14.
Unfinished eurorack
panels are available for this project, they are 6HP and cost $8 each. The panel pictured at the left is for two sets of PCBs, if you prefer a panel for a single PCB, let me know.
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.
