An ESP8266 board to drive Neopixel/WS2812 LED strips, for plug-and-play use with an ATX power supply. The board is OSHW certified. Latest version now has three injection points with 8A fuses for safety, to manage the high power of ATX power supplies.
See the My Baby's Got LED product page on the MCQN website for full details.
The finished product is available for sale on Tindie: