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Answered by MarcdeVinck : Nov 13 2009 01:16 PM
Check out Peggy. It can power, and control up to 625 LEDs! It's open-source, and totally hackable.
http://www.makershed...ductCode=MKEMS3 full answer >
With Arduino, one of the first things you learn is how to blink an LED on and off. But what if you want to vary the brightness? It's almost as easy as blinking an LED, but there's a little mor...