Hey everyone! Just wanted to share a small project I built for fun.
It’s a browser-based tool that lets you play your LED strip like an instrument: Press a key on your MIDI keyboard, the corresponding LED segment lights up; release it, and it fades out. Polyphonic, velocity-sensitive, and everything happens in real time.

The whole thing is a single HTML file you upload directly to your WLED device’s filesystem (no install, no extra server, no complex setup). Just open it in a modern web browser and you’re good to go. I tested it with a Donner DMK 25 Pro, where the three hardware knobs even map to color, brightness, and fade-out time out of the box.
It’s nothing serious, just a fun little experiment, but it opens up some interesting possibilities for live performances or just messing around. If you’ve got a WLED strip and a USB MIDI controller collecting dust, give it a try!
Happy to answer questions. ![]()
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