This is a eurorack compatible module, however it does use midi and i2c so I hope it is compatible with other synths.
The official website is here:
You can make your own PCBs and panels for it.
The module uses a teensy microcontroller
The official build notes are here:
This is a cmos 16 channel multiplexer
This is a quad op-amp
D4are four SOD-123 diodes.
R18 are4.7k resistors.
+ If you plan on using I2C with an ER-301,
Ansible or TXo, (ie I2C "MASTER" mode) you should populate the 4.7K resistors.
+ If you plan on using I2C with a monome Teletype,
do not populate these resistors - it may well cause problems.
........................ I'll leave these off for the moment... see how it goes
the 16 mono jacks.
tHE Teensy 3.2