leduino is an Arduino-based LED strips USB interface. This firmware allow you to drive an FastSPI-compiliant LED strip/modules using Arduino Mega. Additionnally to the simple USB to LED strip converter, this firmware features a color/brightness correction. To turn your Arduino Mega into a LEDuino, you need to install FastSPI¹ library, then compile and upload this sketch as usual. Please that hardware connection between Arduino and your LED strip should follow the FastSPI requierements. [1] http://code.google.com/p/fastspi/