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Published on Sep 3, 2009
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!
Part of the "Andromeda Space Rockers" series of modules, see www.ericarcher.net for drum modules.
The 6-pin header board dangling to the right is an ISP header. Totally hackable!