Arduino Uno Rev3 [A000066]

Overview

The Arduino Uno Rev3 is the board most people mean when they say "Arduino". Built around the ATmega328P running at 16 MHz, it carries 14 digital I/O pins (6 of them PWM-capable), 6 analogue inputs, a USB connection, a power jack, an ICSP header and a reset button — everything the microcontroller needs to run.

Getting started really is as simple as connecting a USB cable, or powering the board from an AC-to-DC adapter or a battery. Unlike the boards that came before it, the Uno does not use an FTDI USB-to-serial chip; instead it uses an ATmega16U2 programmed as a USB-to-serial converter, which is one reason it is so reliable across operating systems.

This is the through-hole (DIP) edition, so the ATmega328P sits in a socket and can be swapped or removed. It remains the standard board for classrooms, prototyping, robotics and IoT experiments, backed by an enormous library and example ecosystem.

Key Features

• ATmega328P microcontroller — 16 MHz with 32 KB flash, 2 KB SRAM and 1 KB EEPROM
• 14 digital I/O and 6 analogue inputs — 6 digital pins provide PWM output; analogue inputs are 10-bit
• Straightforward USB programming — Upload sketches and use the serial monitor directly from the Arduino IDE
• Flexible power — USB, 7–12 V DC barrel jack or battery
• Socketed DIP microcontroller — The ATmega328P can be removed or replaced
• Huge ecosystem — Thousands of shields, libraries and tutorials built around this exact board

Specifications

What's in the Box

• 1 × Arduino Uno Rev3 board

A USB Type-B cable is sold separately.