The Arduino UNO R3 is a microcontroller board based on the ATmega328.. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

Feature:

• 100% Arduino UNO compatible
• USB handler CH340G Replace ATMega16U2
  
• Atmel Atmega328P-AU MCU
• 8 analog inputs ports: A0 ~ A7
• 14 Digital IO Pin
• 6 PWM Pin
• 6 Analog Input Pins
• USB download and Self-Power
• 2.1mm External Power Connecter