Check out this cool LED coffee table made by Edo from Germany, which uses Arduino microcontrollers. "I used one Arduino Duemilinove to control 12 TLC5940 ...

[Thibault Brevet] wanted his own party lighting that pulsed and faded along with the tunes. He ended up building a system based on an Arduino and a PC running Processing. The output from a mixing b… ...

To get there, he utilized a pair of TLC5940 16-channel PWM chips, which function like cascading shift registers but have some fantastic current limiting and dot correction features.