Arduino Uno

The Arduino Uno is the most popular of the Arduino boards available and the easiest to get started with.

Capabilities Summary

  • USB Type B connector provides data and power in
  • DC Barrel Connector provides power in
  • 14 Digital I/O Pins

    • Pulse Width Modulation on pins 3, 5, 6, 9, 10, and 11
    • Serial Communication on pins 0 and 1
    • Serial Peripheral Interface (SPI) communication on pins 10, 11, 12, and 13
  • 6 Analog Input Pins

    • Two Wire Interface (TWI) support on pins A4 and A5
  • Can be powered by a 9V battery
  • "Power pins" can power the board, external devices, and shields

Power Requirements

Arduino Uno Resources

Broader Topics Related to Arduino Uno


The open-source electronics platform for interactive projects and prototypes

Arduino Uno Knowledge Graph