Uno R3 ATmega328P-PU 16U2, Arduino Compatible

brand: SainSmart SKU: 101-51-102

This is the Arduino compatible UNO R3, ATmega328P-PU. The new ATMega16U2 chip allows for faster transfer rates and more memory. No drivers needed for Linux or Mac.

  • Added SDA and SCL pins that are near to the AREF pin
  • Two new pins are placed near the RESET pin. One is the IOREF that allow the shields to adapt to the voltage provided from the board. The other is a not connected and is reserved for future purposes
  • Stronger RESET circuit.
  • Atmega 16U2 replace the 8U2.

 We also have a selection of Basic Starter Kit, Deluxe Starter Kit, Ultimate Starter Kit, these kits are based on this UNO R3 board. 


  •    ATmega328-AU microcontroller
  •     Input voltage - 5-10V
  •     5V Electric current : 500MA
  •     3.3V Electric current : 50MA
  •     14 Digital I/O Pins (6 PWM outputs)
  •     6 Analog Inputs
  •     32k Flash Memory
  •     16Mhz Clock Speed


  •     TWI interface and the IOREF in the top and bottom connectors.This change keeps the board 100% compatible with the current boards and shields, but adds possibilities for new shields.
  •     Reset button moved from center of board to corner near USB connector. This is great; makes it much easier to access with a shield on.
  •     Larger heatsinking copper area for the LM117 regulator
  •     Uses an Atmega16U2 instead of the Atmega8U2 on the previous version. Opens up more possibilities for USB apps!


  • 1x SainSmart UNO R3 with Mega328P ATmega16U2 board
  • 1x USB cable