The MCCV thing is a simple microcontroller board based control voltage generator for analog modular synths. Rather than specific, fixed design, this project is a collection of materials for building your own.
[full size](https://github.com/mzero/1205thing/blob/master/images/mzero/original.jpg)- 4 control voltages out, 0 ~ +8V, ~2kHz max bandwidth
- 4 trigger outs, 0 ~ 8V
- Based on a Feather M0 board
- Optional display
- Programmable in C++ or Circuit Python
- I made it for Serge, but could easily be adapted for Eurorack.
See the Wiki for full details.