Arduino Nano v3.0 compatibleArduino Nano 3. 0 (ATmega328) Overview The Arduino Nano is a small, complete, and breadboard friendly board based on the ATmega328 (Arduino Nano 3. x) or ATmega168 (Arduino Nano 2. x). It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini B USB cable instead of a standard one. Specifications: Microcontroller Atmel ATmega168 or ATmega328 Operating Voltage