48 Analog inputs for the Arduino. If that’s not reason enough to use this: you can also use any of those 48 as digital inputs.
Have you ever wondered exactly how your Arduino works? Would you like to build an Arduino clone from scratch? Are you already using other microcontrollers, but would like to get into using the Atmegas? If so, you should come to a workshop I (Josh) will be running at Noisebridge on Sunday, July 31st, 2011 (11AM). [...]