Open hardware projects tagged rgb on BoardRepo. View schematics and PCBs in the browser and download the sources.
Custom RGB-backlit 3D-printed mechanical keyboards with custom firmware
RGB to YPbPr converter
Cherry MX Breakout Boards with reverse-mounted addressable RGB LED and hot-swap.
Alarm clock (v3)
Circle clock using 276pcs of WS2812C-2020 and an M5Atom
Converts RGB + Sync analog signal to S-Video (and also Composite).
4-pin RGB controller using the Pi Pico and USB HID