Arduino Nano R3 development board is a small but complete and breadboard-friendly board

 based on ATmega328P chip and is equipped with a low-cost USB-Serial Chip that makes it ideal for pocket friendly project and prototyping work.

Specification:-

• Model name : NANO R3

• Chip name : ATmega328

• Operating voltage : 5V

• Recommended operating voltage range : 5V to 12V

• Digital input/output pins :  14 (of which 6 provide PWM output)

• Analog input/output pins : 8

• Flash memory : 32KB

• Clock frequency : 16MHz

Features:-

•  Support USB download and power

•  Support for external 5V to 12V DC power supply

•  It supports power supply by 9V battery

•  Support ISP download

•  Automatic reset during program download.