This project is for those who want to control room light according to their mood. RGB mixing lamp is great in generating various colour schemes. It can work as stand alone device without PC connection.

It can be controlled remotely via standard RS485 bus system. RGB lamps are developed as stackable modules. If you want to build one - be prepared to develop four separate PCB’s for power supply, Atmega8 controller board, LED board and serial connectivity board. It has two firmware versions developed on ASM and C languages. Turn on deep blue colour and watch “The Abyss”.

This project may be useful for TV testers. TV pattern is generated by Atmega8 which runs at 16MHz and it may produce 14 different color patterns that you can see on regular TV.

Circuit has RGB to PAL converter built in but of course RGB signals also can be used as most TV’s now accept RGB signal (scart connector). Project files are available for download.