Piano LED Visualizer
lastmod 2026-11-10created 2021-05-043 edits
Piano LED Visualizer is an open-source project that attaches an LED strip to a digital piano with MIDI or USB output and lights up the keys as you play. A Raspberry Pi reads the piano's MIDI signals and lights the LEDs corresponding to the pressed notes, and it offers a small screen and a web interface for changing color effects, plus a learning mode that plays MIDI files and shows the keys to play in advance. The hardware setup and installation steps are documented in the repository.
Piano with MIDI or USB output