4ms shows off the proto for their upcoming bassline module, part of the “Andromeda Space Rockers” series –

The Autonomous Bassline Generator creates deterministic bassline patterns in a sci-fi retro sound by generating melodies on the fly, based on a knob. It’s just an AVR (attiny44) chip doing all the work, plus an opamp to act as the filter (photocell). The blue button is Tap Tempo, or if you hold it down for 1 second, it syncs up to the pulses on the IR receiver (this lets you beat-sync multiple Andromeda Space Rocker modules). The red button lets you edit a single note in the melody. Pulse-width modulation is currently pre-set to a certain envelope, but that will become user-controllable soon!

No source/schematics as of yet, but we’ll keep an eye on 4msPedals for updates.