Making WLED Lights React to Music — Without a Microphone

How I wired Home Assistant, Music Assistant, a Raspberry Pi, and a WLED ESP32-S3 together to get audio-reactive lights driven entirely from the music stream — no microphone required. (Claude helped with both the project and this post) The Goal I wanted my WLED-controlled lights to react to whatever was playing through my HiFi system — pulsing, flashing, and shifting colours in time with the music. The catch: I didn’t want a microphone picking up room noise, and I wanted it to work automatically whenever music played, without any manual intervention. ...

June 2, 2026 · Gildas Le Nadan