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Arduino Uno Board R3

Arduino Uno Board R3

£16.96

The Arduino Uno Board A000066 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 an AC-to-DC adapter or battery to get started.

The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 programmed as a USB-to-serial converter.


  • Microcontroller ATmega328
  • Operating voltage 5V
  • Input voltage range nom. 7-12V
  • Maximum supply voltage 20V
  • Digital I/O pins 14 (of which 6 provide PWM output)
  • Analog input pins 6
  • DC Current per I/O pin 40 mA
  • DC Current for 3.3V pin 50 mA
  • Flash memory 32 KB of which 0.5 KB is used by bootloader
  • SRAM 2 KB
  • EEPROM 1 KB
  • Clock speed 16 MHz
  • USB Connector type B Male

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