Arduino Uno R3

Arduino Uno R3
Pololu item #: 2191 407 in stock

Price break Unit price (US$)
1 29.95
10 26.96

backorders allowed

The Arduino Uno R3 is a microcontroller board based on a removable, dual-inline-package (DIP) ATmega328 AVR microcontroller. It has 20 digital input/output pins (of which 6 can be used as PWM outputs and 6 can be used as analog inputs). Programs can be loaded on to it from the easy-to-use Arduino computer program. The Arduino has an extensive support community, which makes it a very easy way to get started working with embedded electronics. The R3 is the third, and latest, revision of the Arduino Uno.

 Description Specs (12) Pictures (3) Resources (13) FAQs (0) On the blog (3) 


Size: 2.95″ × 2.1″
Weight: 28 g

General specifications

Processor: ATmega328 @ 16 MHz
RAM size: 2048 bytes
Program memory size: 31.5 Kbytes
Motor channels: 0
User I/O lines: 201
Max current on a single I/O: 40 mA
Minimum operating voltage: 7 V
Maximum operating voltage: 12 V
Reverse voltage protection?: N
External programmer required?: N2


All 20 can be used as digital I/O and 6 can be used as analog inputs.
An external programmer is required for setting the fuses or upgrading the bootloader.

Related Products

Wall Power Adapter: 9VDC, 1A, 5.5×2.1mm Barrel Jack, Center-Positive
Wall Power Adapter: 5.25VDC, 1A, USB Port
A-Star 32U4 Mini ULV
A-Star 32U4 Mini LV
A-Star 32U4 Mini SV
A-Star 32U4 Prime LV microSD
A-Star 32U4 Micro
A-Star 32U4 Prime SV microSD
Arduino Micro
Arduino Mega 2560 R3
Arduino Leonardo
Pololu 9V Step-Up Voltage Regulator U3V12F9
Pololu 9V, 1A Step-Down Voltage Regulator D24V10F9
Pololu Dual VNH5019 Motor Driver Shield for Arduino
Pololu Dual MC33926 Motor Driver Shield for Arduino
Pololu DRV8835 Dual Motor Driver Shield for Arduino
Pololu A4990 Dual Motor Driver Shield for Arduino
Wixel Shield for Arduino
Adafruit Data Logging Shield for Arduino
SparkFun Inventor's Kit (for Arduino Uno) - V3.2
SparkFun Starter Kit for Arduino-Compatible RedBoard
Zumo Robot for Arduino, v1.2 (Assembled with 75:1 HP Motors)
Baby Orangutan B-328 Robot Controller
Premium Jumper Wire 50-Piece Rainbow Assortment M-M 12"
Wires with Pre-crimped Terminals 50-Piece Rainbow Assortment M-M 12"
Pololu USB AVR Programmer
Stackable 0.100" Female Header Set for Arduino Shields

Related Categories

Arduino Shields
A-Star Programmable Controllers
Programmable Controllers
Male-Male Premium Jumper Wires
Male-Female Premium Jumper Wires
Wires with Pre-crimped Terminals
Solderless Breadboards
Regulators and Power Supplies
Switches, Buttons, and Relays
Pololu RP5/Rover 5 Expansion Plates
Pololu 5″ Robot Chassis RRC04A
Signal Adapters and Extenders
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors