Nano is an ultra-small Simple I/O platform base with open source code .Compared with the previous USB version Arduino  Diecimila ,Arduino Nano has a large advantage in size. Arduino can be used to develop electronic appliances which run independently and the interactive effects;Can also be used to develop interactive work  which connect to a computer and work with same Flash, Processing, Max/Msp, PD, VVVV software in cooperation.

Features:

• 12 Digital input / output ports:D2 ~ D13
• 8 analog inputs ports:A0 ~ A7
• 1 pairs of TTL level serial transceiver ports RX / TX
• 6 PWM ports:D3, D5, D6, D9, D10, D11
• Using Atmel Atmega328P-AU MCU
• Support USB download and Power
• Support for external 5V ~ 12V DC power supply
• Support power supply by 9V battery
• Support ISP download