If you love the Arduino software but find yourself hampered by the included ATmega168 chip’s memory size or pin count, Zach Hoeken has a solution –
Sanguino is a new microcontroller board inspired by the Arduino. We took the biggest baddest 40-pin DIP that Atmel makes and made a board with it. Its based on the atmega644P which provides 64K of flash, 4K of ram, 32 GPIO pins, and tons of other stuff. The best part: its compatible with the Arduino software, which means all of your code should run on it no problem, and you can program it just as easily.
Sweet – the extra pins alone would satisfy this arduinaut – I do believe I’ll have to give this board a go.