Now shipping the newest Arduino Mega R3 board with the Mega 2560 chip, Rev 3!
The Arduino Mega is very similar to the Duemilanove, but has MUCH more IO and memory. Look the specs for this beast:
Digital I/O Pins: 54 (Yes, you read that right)
Analog Input Pins: 16
Flash Memory: 256 KB (Imagine the possibilities)
SRAM: 8 KB (This is just silly)
EEPROM: 4 KB
Clock Speed: 16 MHz
This board comes with a free 6' USB 2. 0 cable! Most Arduino distributors do not include the required USB cable with their boards, but we do!
See our Arduino getting started guide.
Also check out our Arduino Kits. Kits include an Arduino board and the components you need to get started fast.
Once you get your Arduino board, see the project website for all of the specs and free development software. Make sure you download the latest copy of the Arduino software (Build 15 or later ).