Arduino UNO R3 Compatible Development Board

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  • Arduino UNO R3 is the newest version of the open sourced controller. The biggest difference between this product and the Arduino UNO is the ATMega16U2 single chip which is located on the serial port circuit.


  • Two more I2C pins have been added near the AREF pin. However these two pins SDA and SCL are just copies of Analog 4 and 5 instead of actual I2C ports.

  • Two more pins have alsobeen added near the RESET pin. One of them is IPREF which allows thedevelopment board to get used to the loaded voltage by telling it what thevoltage now is. The other one is a pin that is saved for later uses.

  • The RESET circuit has become much more stable. The RESET button has also been moved closer to the USB port which is easier to access for customers.

  • The 8U2 has been replacedby the ATmega16U2. This update mainly serves the USB port chip to allow it simulate USB HID such as MIDI/Joystick or keyboard.


  • Digital I/O 0~13

  • Analog I/O 0~5

  • Supports ISP downloading 

  • Inputvoltage: 5-9V DC or powered by PC

  • Output voltage: 3.3-5V DC

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  • Arduino controller: 1pcs



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