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
Created by Paul Stoffregen and the team from PJRC, the Teensy 3.2 is a microcontroller development board running a 32-bit ARM Cortex M4 processor, clocking in at 72MHz (overclockable to 96MHz). It also packs 1MB of flash, 4K of EEPROM, and 34 I/O pins
The switch setects different types of MIDI connectors Arturia Vs Korg
'Arturia/Novation' (tip is current source) and 'Korg/Makenoise' (ring is current source) standards; board is labelled such.
fLASHING THE Firmware
There are two ways to flash the microcontroller
The Build guide uses the Arduino IDE/Teensyduino software.
The first step is to plug your new Teensy in using the USB cable.
All brand new Teensy boards come with the LED blink program pre-loaded. You should see the Orange LED blink slowly, 1 second on, 1 second off.
Before you can flash your Teensy you will need two pieces of software:
1. The Arduino IDE
First install the Arduino IDE. (I'm using version 1.8.9)
Next install Teensyduino
Within the Arduino IDE software application, you need to open the Tools men.
be sure to set the Board to Teensy 3.2, USB type to MIDI, CPU speed to 120mhz overclock.
_16n_firmware.inofile in the Arduino IDE.
Flash the board (upload the file).
I ran into a few problems using this method ... compiling errors such as:
A friend suggested I try the simple Teensy Loader Application
This is the second method.
This, only uploads hex files.
+ Teensy First use
+ Using Teensy with Arduino IDE
+ Teensyduino - software
+ Microcontrollers - general info
+ i2c protocol
CreditsBased on original work by Brian Crabtree and Sean Hellfritsch.
Minijack MIDI, I2C circuitry and CV outputs by Tom Armitage.
Firmware by Brian Crabtree, Tom Armitage, and Brendon Cassidy.