README.md

PLEASE NOTE:

This is a low TRL device, and as such, please see known issues below.

Overview

Inputs and Outputs

• USB C to power and program
• USB C to connect to Controller
• 4x Midi TRS type A
  • Midi out to Synth
  • Midi in from Synth
  • Midi in from Computer/Master Clock
  • Midi out to computer/other
• 1x Trigger (3.5mm type) jack for pedal etc.

Electronics

• Based on Adafruit ItsyBitsy MO Express https://www.adafruit.com/product/3727
• Processor: ATSAMD21 Cortex M0 processor running at 48 MHz
• External Memory: EEPROM 512k I2C
• 24 pin I/O Expander: PCAL6524HEAZ
• Leds for indication: IN-PI55TATPRPGPB
• Encoders, LDO power, Caps, Resistors etc

Controls

• The controller works the same as the Matrix V2.
• This was an eariler version, that I used to experiment and debug the concept.
• THe Controller board needs some work, but the Inline Board (stand alone MIDI looper) is ready to go, and works quite well.

Issues

SCHEMATIC

PCB

CAD

CODE