Uno R3 (Arduino Compatible) Microcontroller

  • $17.00

The Uno r3 is a microcontroller board based on the ATmega328 chip from MicroChip. It is 100% Arduino compatible and at a lower price.

It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analogue inputs, a 16 MHz crystal oscillator, a USB Type B connection, a DC Power Jack, an ICSP header, and a reset button.

This is the latest revision of Arduino Uno and features stronger reset circuit and 16U2 microcontroller instead of the 8U2.


1 x Uno r3 Board
1 x USB Cable for PC connection


  • This board is a generic model, built from the Arduino Uno r3 design by Arduino. It's completely compatible with the Arduino IDE.
  • Microcontroller: ATmega328 (datasheet)
  • Operating Voltage: 5V
  • Input Voltage (recommended): 7-12V
  • Input Voltage (limits): 6-20V
  • Digital I/O Pins: 14 (of which 6 provide PWM output)
  • Analogue Input Pins: 6
  • DC Current per I/O Pin: 40 mA
  • DC Current for 3.3V Pin: 50 mA
  • Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader
  • SRAM: 2 KB (ATmega328)
  • EEPROM: 1 KB (ATmega328)
  • Clock Speed: 16 MHz