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Quick Overview

Arduino microcontroller module with USB connection
Wide variety of accessory "Shields" available
It is intended for roboticists, artists, designers and hobbyists
Variety of I/O pins including analog, digital, PWM and more
Based on the ATmega328 (removable DIP IC)
Revision 3

Arduino Uno USB Microcontroller Rev 3

Product Code : RB-Ard-34

Arduino microcontroller module with USB connection
Wide variety of accessory "Shields" available
It is intended for roboticists, artists, designers and hobbyists
Variety of I/O pins including analog, digital, PWM and more
Based on the ATmega328 (removable DIP IC)
Revision 3

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About this product

Description

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Arduino microcontroller module with USB connection
Wide variety of accessory "Shields" available
Intended for roboticists, artists, designers and hobbyists
Variety of I/O pins including analog, digital, PWM and more
Based on the ATmega328 (removable DIP IC)
Revision 3

The Arduino Uno is a microcontroller board based on the ATmega328 microchip. 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 1.5m USB Cable Type A to B or power it with an Wall Adapter Power Supply - 9VDC 650mA or DFRobot 7.4V Lipo 2200mAh Battery (Arduino Power Jack) 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. "Uno" means one in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno and version 1.0 will be the reference versions of Arduno, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform.

Arduino Uno USB Microcontroller Rev 3- Click to Enlarge

The Arduino Uno can be powered via the USB connection or with an external power supply. The power source is selected automatically. External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector. The board can operate on an external supply of 6 to 20 volts.

The Arduino Uno can be programmed with the Arduino software. Select "Arduino Uno from the Tools > Board menu (according to the microcontroller on your board). For details, see the reference and tutorials. The ATmega328 on the Arduino Uno comes preburned with a bootloader that allows you to upload new code to it without the use of an external hardware programmer.

Supplier Product Code

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A000066

Dimensions

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• Length: 2.7 inches
• Width: 2.1 inches

The USB connector and power jack extend beyond these dimensions.
Four screw holes allow the board to be attached to a surface or case.
Note that the distance between digital pins 7 and 8 is 160 mil (0.16"), not an even multiple of the 100 mil spacing of the other pins.

Useful Links

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PDF Files
ATmel ATMega 328 Datasheet
Arduino Uno Schematic

ZIP File
Arduino Uno Microcontroller Reference Design

Website
• RobotShop Learning Center: Arduino Microcontroller Feature Comparison 
• RobotShop Learning Center: Arduino 5 Minute Tutorials
• RobotShop Learning Center: Robotics Education
Arduino Language Reference and Website
Arduino Cheat Sheet

Forum
Arduino - Starter Kit
Official Arduino Forum

Servo Article

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Making Robots With The Arduino, Part 1, by Gordon McComb, Servo Magazine November 2010

Specifications

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• Microcontroller: ATmega328
• Operating Voltage: 5V
• Input Voltage (recommended): 7-12V
• Input Voltage (limits): 6-20V
• 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 (ATmega328) of which 0.5 KB used by bootloader
• SRAM: 2 KB (ATmega328)
• EEPROM: 1 KB (ATmega328)
• Clock Speed: 16 MHz


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Reviews

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Customer Reviews

Great product

Review by TehWan
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General

Good construction, does what it is intended to do. I thought it was possible to change the MCU, but I haven't been able to remove it and dare not to use too much strength either, though it seems possible. Just like any Arduino product, plug and play. Works great, but quite sensitive to short circuits, be careful. I had to plug in an external programmer to save a board.

(Posted on 9/15/14)

Did what it's supposed to do.

Review by Simon
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General

Perfect for small or big project, nice calculating power and easy to use. I recommend it.

(Posted on 8/22/14)

Excellent

Review by Dardo
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General

Very good product. Works very good.

(Posted on 8/20/14)

an essential and very versatile tool

Review by Kenneth
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General

This Uno brings my total 'duino usage to 10. I use them from LED lighting to a temperature controlled kitten nesting box. This unit was used to monitor power to my heat pump. It is one of three connected to a Raspberry Pi server through USB or FTDI and one connected via Bluetooth.

(Posted on 8/3/14)

a good choice to start

Review by Cristiano
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General

a good choice for rapid prototyping of our projects

(Posted on 7/30/14)

Everything OK quick and accurate! Excellent product ...

Review by Loris
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General

Good price! and the service!

(translated from Italian with Google translate)

(Posted on 7/22/14)

Meets the users needs.

Review by Marina
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General

Excellent!

(Posted on 6/26/14)

Meets the users needs.

Review by Marina
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General

Meets the users needs.

(Posted on 6/26/14)

Highly recommended

Review by Corry
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General

A good board for getting into Arduino programming.

(Posted on 5/8/14)

Great for beginners

Review by Zero
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General

simply a great board to started in robotics

(Posted on 4/23/14)

Very easy microcontroller to get started.

Review by Andrew
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General

With all the examples available for practicing, this board is idea for the first timer or someone getting back into the DIY of robotics. It's size and available accessories makes it a very versatile controller.

(Posted on 4/9/14)

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