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I've been working on a weekend project to make lights that react meaningfully to music, by taking into account beats and chords. Here's a video of it: https://

• StavrosK 10y ago
  That looks fantastic, how do you synchronize the music with the lights? Presumably chordify doesn't return time information?
  • nsedlet 10y ago
    Yes Chordify has time information - it's pretty accurate too, and works for folk, rock, classical, whatever. It's just a matter of timing the lights with the audio output. My setup is a Raspberry Pi as a master, and an Arduino to talk to the lights (which is necessary because the RPi's pins are too slow to send signals to an addressable LED strip). The RPi sends chord and beats in real time as they happen, over USB. Every few seconds it syncs the light show clock with the audio player clock.