Inspired by the steady clicky-clack of MUNI train signals, this metronome's sound is entirely acoustic and composed of two partially disassembled electric relays synced to respective programmable eight-step sequencers.
Think of it like flamenco hand clapping but with electromagnets!
See it in action here.
External controls: on/off switch, tempo slider
Internal controls: rhythm switches
IC Chips: LM555, CD4017
Input/output: 9v power jack, 1/8" mono audio output