01 · Final system
From MIDI file to physical motion
The complete system combines the piano-mounted solenoids with a large driver assembly below.
88-Key Self-Playing Piano
December 2025 – January 2026
A full-scale MIDI-controlled piano mechanism using 88 individually controlled solenoids.
I designed and built an automated system that plays all 88 piano keys using Arduino-controlled 12-volt solenoids. The control circuit uses 11 daisy-chained shift registers, MOSFETs, and protective diodes, while the software converts MIDI files into precisely timed key commands.
Design, build & testing
02 · Performance
Fast-song demonstration
A final demonstration of the piano responding to a faster MIDI sequence.