Light circuit for additive color mixing

The Fnordlicht is a lamp that enables endless color combinations through additive color mixing. The circuit uses an Atmega8 (same as Arduino) processor and a matrix of 9 RGB LEDs and can be controlled via RS232 or 12C. Lots of great circuit diagrams and more info at the links below.

Fnordlicht: RGB LED mixing light – [via], Link1, Link2