Arduino NANO Usb Microcontroller V3 (With Headers) - Original info
Arduino Nano USB Microcontroller v3.0 is a small and breadboard compatible board based on ATMega328 microcontroller. Electronically it has the same abilities that Arduino Diecimila and Arduino Duemilanove possess. Therefore its small size makes it more preferable over other boards. The only difference between these boards is that Arduino Nano USB Microcontroller v3.0 does not have a DC power jack. Instead of that the board works with a Mini-B USB cable.
Arduino Nano USB Microcontroller v3.0 can be powered by the Mini-B USB cable, an unregulated 6-20V or a regulated 5V source. The board has 14 I/O pins. 6 of them can be used as PWM outputs while 8 of them can used as analog inputs.
The most important improvement of the Arduino Nano USB Microcontroller v3.0 is instead of ATMega168, this design has ATMega328 microcontroller which provides more memory for programming and data storage
Arduino NANO Usb Microcontroller V3 - General Specifications
Special library functions for robotics
Arduino NANO Usb Microcontroller V3 - Technical Specifications