i2c2midi firmware
Firmware for i2c2midi (attowatt)
Firmware for the DIY i2c2midi Teletype expander: adds MIDI notes, CC, chords, a looping buffer and MIDI input to Teletype through I2M ops, over TRS and USB host, with 8-voice polyphony per channel.
by attowatt
- Distribution
- Prebuilt image you flash yourself
- Requires stock
- i2c2midi MKI or MKII module; Teletype 5.0.0 or later
- License notes
- No LICENSE file; the README does not state a license.
- Source
- github.com https://github.com/attowatt/i2c2midi
- Homepage
- github.com https://github.com/attowatt/i2c2midi
- midi
- usb-midi
- i2c
Description
The release notes say v5.0.4 is a bugfix release for both the MKI and MKII hardware and works with official Teletype firmware 5.0.0 and later. The firmware is an Arduino sketch compiled with Teensyduino; defines select MKI (Teensy 3.2) or MKII (Teensy 3.6 or 4.1). The README also credits a crow library by mreid. Hardware files and a build guide are in the same repository.
Install notes
Open firmware/i2c2midi_firmware/i2c2midi_firmware.ino in Teensyduino, set the hardware defines and upload; do not connect Euro power and USB at the same time.
Version history
| Version | Date |
|---|---|
| v5.0.4 | 2025-08-19 |
| v5.0.3 | 2025-07-07 |
| v5.0.2 | 2025-01-02 |