Simple, but functioning Euclidean Rhythm sequencer for RP2040.

Developed with

• Adafruit Feather RP2040
• Adafruit MIDI FeatherWing Kit
• Adafruit FeatherWing OLED - 128x64
• NeoKey 1x4 QT I2C - Four Mechanical Key Switches with NeoPixels - STEMMA QT / Qwiic
• (Optional) FeatherWing Proto, Doubler or Tripler and some standoffs to mount it on something.

Connect OLED and Neokey with STEMMA QT / Qwiic cables.

See demo at: https://www.reddit.com/r/synthdiy/comments/10susyk/euclidean_rhythms_sequencer_on_an_rp2040/

Usage

• First button changes track
• Second button changes cursor
• Third button decrese value
• Fourth button increase value

There is a global menu on top. Use button 4 to enter. Clicking button 3 on the menu will mute current track.

You can select between internal clock, stopped and external clock. If external clock is selected, the sequencer will sync to midi-in clock.

License

I hereby make this available under MIT license.