Shop the new Cobra Trailblazer 450 GMRS Radios
Add Prime to get Fast, Free delivery
Amazon prime logo
$27.60
Get Fast, Free Shipping with Amazon Prime FREE Returns
FREE delivery Tuesday, April 8 on orders shipped by Amazon over $35
Or Prime members get FREE delivery Saturday, April 5. Order within 10 hrs 33 mins.
In Stock
$$27.60 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$27.60
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon
Amazon
Ships from
Amazon
Sold by
Arduino
Arduino
Sold by
Arduino
Returns
30-day refund/replacement
30-day refund/replacement
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more

Arduino Uno REV3 [A000066]

4.8 out of 5 stars 9,670 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice
$27.60 with 5 percent savings
List Price: $29.00
Get Fast, Free Shipping with Amazon Prime
FREE Returns
Available at a lower price from other sellers that may not offer free Prime shipping.
Brief content visible, double tap to read full content.
Full content visible, double tap to read brief content.
Size: Arduino UNO R3
{"desktop_buybox_group_1":[{"displayPrice":"$27.60","priceAmount":27.60,"currencySymbol":"$","integerValue":"27","decimalSeparator":".","fractionalValue":"60","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"cm2i0Yr%2BEDNkGB7WFPuUDFoWgL2SIJRVgc7IQzaV3nkooytzCtVB7NCQSrvKe6DB7e513eGtmHQAJ5L6o%2FucjvvW86YN8hXPR5ODhQY9HVD15TdeG9E%2B8l7HpE48ivsB51SZvao4rShQ3pLgHeQzjFgEwfNiohSZXy8Uo2pFA1eXIP8o8rkqxo0eKHnawYIH","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}]}

Purchase options and add-ons

Brand Arduino
Model Name ARD_A000066
Ram Memory Installed Size 0.2 MB
Memory Storage Capacity 32 KB
CPU Speed 16 MHz

About this item

  • This board is your entry to the unique Arduino experience: great for learning the basics of how sensors and actuators work, and an essential tool for your rapid prototyping needs
  • Arduino Uno is the most used and documented board in the world
  • "Uno" means one in Italian and was chosen to mark the release of Arduino Software (IDE) 1.0, now evolved to newer releases
  • It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button
  • Arduino is an open-source hardware, software, and content platform with a worldwide community of over 30 million active users
› See more product details

Competitively priced item

Amazon's Choice
4.7 out of 5 stars (131613)
$6.49

Frequently bought together

Arduino Uno REV3 [A000066]
This item: Arduino Uno REV3 [A000066]
$27.60
Get it as soon as Tuesday, Apr 8
In Stock
Sold by Arduino and ships from Amazon Fulfillment.
+
ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Rib
$6.98
Get it as soon as Tuesday, Apr 8
In Stock
Sold by ELEGOO Official US and ships from Amazon Fulfillment.
+
EDGELEC 120pcs Breadboard Jumper Wires 10cm 15cm 20cm 30cm 40cm 50 cm 100cm Wire Length Optional Dupont Cable Assorted Kit Ma
$6.98
Get it as soon as Tuesday, Apr 8
In Stock
Sold by EDGELEC and ships from Amazon Fulfillment.
Total price: $00
To see our price, add these items to your cart.
Details
Added to Cart
spCSRF_Treatment
These items are shipped from and sold by different sellers.
Show details Hide details
Choose items to buy together.

Important information

Legal Disclaimer

Must be at least 18 & over to purchase.

Compare with similar items

This Item
Arduino Uno REV3 [A000066]
Arduino Uno REV3 [A000066]
Recommendations
UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino, Input Voltage 7-12V, 16MHZ,14 Digital 1/0 pins Support PWM, SRAW 2KB, Compatible with RPi 4B/3B+/3B/2B/B+/Zero/Zero W
UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino, Input Voltage 7-12V, 16MHZ,14 Digital 1/0 pins Support PWM, SRAW 2KB, Compatible with RPi 4B/3B+/3B/2B/B+/Zero/Zero W
 
Gelek UNO R3 Microcontroller Board Compatible with Arduino Uno R3, ATmega328P and ATmega16U2 with USB Cable, Prototyping Board
Gelek UNO R3 Microcontroller Board Compatible with Arduino Uno R3, ATmega328P and ATmega16U2 with USB Cable, Prototyping Board
 
2 Pcs Mini Nano V3.0 ATmega328P Microcontroller Board w/USB Cable for Arduino
2 Pcs Mini Nano V3.0 ATmega328P Microcontroller Board w/USB Cable for Arduino
 
Gomass UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino
Gomass UNO R3 Board ATmega328P with USB Cable(Arduino-Compatible) for Arduino
 
Arduino UNO R4 Minima [ABX00080] - Renesas RA4M1 - USB-C, CAN, DAC (12 bit), OP AMP, SWD Connector
Arduino UNO R4 Minima [ABX00080] - Renesas RA4M1 - USB-C, CAN, DAC (12 bit), OP AMP, SWD Connector
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Price-5% $27.60
List: $29.00		$8.99-8% $14.65
List: $15.99		$16.99-23% $9.99
List: $12.99		-20% $15.99
Typical: $19.99
Delivery
Get it as soon as Tuesday, Apr 8
Get it as soon as Tuesday, Apr 8
Get it as soon as Tuesday, Apr 8
Get it as soon as Wednesday, Apr 23
Get it as soon as Tuesday, Apr 8
Get it as soon as Tuesday, Apr 8
Customer Ratings
4.84.8 out of 5 stars9,670
4.54.5 out of 5 stars62
4.64.6 out of 5 stars49
4.34.3 out of 5 stars308
5.05.0 out of 5 stars12
4.54.5 out of 5 stars283
Sold By
operating system
cpu manufacturer
cpu speed
RAM size
RAM tech
connectivity tech
wireless standard
core count

From the brand

Previous page

  2. About us

    Innovation is in the hands of everyone who wants to enhance their life by breaking technological barriers. Through creation, production, and support of electronic hardware and software, Arduino provides simple access to cutting-edge technologies that interact with the real world. Join a worldwide community around this open-source platform and give life to simple or groundbreaking technological innovation through simple yet powerful tools

  3. Technology meets fun

    With Arduino, makers have the ability to use creative solutions to complex technology through a range of empowering tools for success

  4. Arduino UNO REV3 [A000066]
    Official Arduino Starter Kit [K000007] (English Projects Book)
    Arduino Portenta Bundle [Portenta H7 + Vision Shield ETH]
    Arduino Student Kit [AKX00025]

    Unleash Your Creative Genius

    Visit the Store

  5. Empower ideas with technology

    Where imagination meets innovation. Arduino is a gateway to empower you to create, experiment and build on endless possibilities.

  6. What is Arduino?

    Arduino designs, manufactures, and supports electronic devices and software, allowing people around the world to easily access advanced technologies that interact with the physical world.

    What makes our products unique?

    Our products are straightforward, simple, and powerful, ready to satisfy users’ needs from students to makers and all the way to professional developers.

    What problem are we solving?

    Our vision is to make Arduino available to everyone, whether you are a student, maker or professional, which is why we now have three segments to our business.

  7. Shaping the future

    Arduino’s mission is to enable anyone to enhance their lives through accessible electronics and digital technologies.

Next page

What's in the box

  • microprocessor

    • Product information

    Technical Details

    Collapse all
    Summary
    Other Technical Details

    Additional Information

    Warranty & Support

    Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
    Product Warranty: For warranty information about this product, please click here

    Feedback

    Arduino Uno REV3 [A000066]

    Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

    Where did you see a lower price?
    /
    /
    /
    /
    Please sign in to provide feedback.

    Product Description

    Arduino Uno rev3 microprocessor board made in italy starter kit electronics kit microprocessor

    ARDUINO UNO BOARDS COMPARISON

    Arduino Uno REV3

    Arduino Uno R4 Minima

    Arduino Uno R4 WiFi

    Microcontroller

    ATmega328P

    Microcontroller

    Renesas RA4M1 (Arm Cortex-M4)

    Microcontroller

    Renesas RA4M1 (Arm Cortex-M4)

    Connection

    USB Connection

    Connection

    USB-C Connection

    Connection

    USB-C and WiFi

    Legacy

    The most sold UNO board so far

    Intro

    New launched, cost effective UNO board

    Intro

    Newly launched, LED matrix, more features, robust

    Customer reviews

    4.8 out of 5 stars
    9,670 global ratings

    Review this product

    Share your thoughts with other customers
    Write a customer review

    Customers say

    Customers report that the Arduino Uno Rev 3 works right out of the box and is well-built, with simple programming and plug-and-play functionality. They find it educational and fun, with vast documentation and tutorials available, making it ideal for prototyping. While some customers confirm it's a legit Italian-made Arduino UNO R3, others report receiving counterfeit Chinese knockoffs.

    AI-generated from the text of customer reviews

    Select to learn more

    327 customers mention "Functionality"299 positive28 negative

    Customers report that the Arduino Uno Rev 3 functions well, working right out of the box, with one customer specifically mentioning flawless operation with the web editor.

    "...IDE program (free on the net) and installed... went fine on my Windows 10 computer with no problems...." Read more

    "...running some sample sketches and my own programs - the board seems to be functioning well. Regarding the Arduino concepts: 1...." Read more

    "...The quality of the board, solder joints and devices appears to be just about perfect. There are no instances of incomplete or rough solder joints...." Read more

    "...The C compiler and IDE work well; I've never had an easier time writing an embedded application, and the price can't be beat...." Read more

    210 customers mention "Quality"172 positive38 negative

    Customers praise the Arduino Uno Rev 3's build quality, describing it as well-made and in great condition.

    "Regarding the board: Seems very well constructed and genuine to me. I used a spare USB cable and hooked it to a laptop with WindowsXP...." Read more

    "...Highly recommended that you purchase though them. The Arduino board is top notch, and is ready to go out of the box." Read more

    "I love this product! It has endless applications and the build quality is amazing!" Read more

    "...for a genuine UNO, I ordered mine from CanaKit and it is the genuine artifact, not a clone (fast shipping too!)...." Read more

    146 customers mention "Ease of use"131 positive15 negative

    Customers find the Arduino Uno easy to use, describing it as beginner-friendly and almost plug-and-play.

    "...Setting up was easy. I first got the Arduino IDE program (free on the net) and installed... went fine on my Windows 10 computer with no problems...." Read more

    "Great for any automation project that you can dream up." Read more

    "Purchased this along with the Seeed Studio sensor kit. Plug and play to get running, and using the arduino app, it was easy to learn basic..." Read more

    "...I am totally sold on how easy it was to get going -- and since it's currently available at Radio Shack, if you use it for anything mission critical..." Read more

    111 customers mention "Value for money"101 positive10 negative

    Customers find the Arduino Uno Rev 3 to be great value for money, with one customer noting it's a cheap way to experiment with electronics.

    "...had an easier time writing an embedded application, and the price can't be beat. The only thing lacking is the ability to debug code via single-step." Read more

    "...because at worst you may have to replace the mail chip which of inexpensive and doesn’t require soldering. So have no fear. Try things...." Read more

    "...I recommend the Arduino as an affordable platform for physical computing, and I highly recommend Mp3Car Store as a trustworthy vendor to purchase it..." Read more

    "...The Arduino Uno R3 board that I ordered here is the real deal, the one made in Italy...." Read more

    106 customers mention "Fun"106 positive0 negative

    Customers find the Arduino Uno Rev 3 educational and fun, describing it as a great platform for experimenting and building.

    "...A small box instead of a bubble mailer would be great. The board is really fun and we already built a range finder!" Read more

    "...so many projects out there in the community, this will surely keep my mind going and my interest. Setting up was easy...." Read more

    "...2. This is a great learning tool to introduce yourself to the embedded software and the base hardware...." Read more

    "fun to play with." Read more

    84 customers mention "Gadget quality"84 positive0 negative

    Customers praise the Arduino Uno Rev 3 as a wonderful microcontroller, with one customer noting it's a nice functional board for experimenting.

    "Great device. I bought 3 of these and they are my go-to controller for some pretty sophisticated DIY projects...." Read more

    "...It's a great device for all kinds of projects -- blinking lights, counting, controlling devices, etc...." Read more

    "...It's a great little microcontroller for all sorts of applications or projects. it is well-supported by online resources and documentation...." Read more

    "...The Uno is a great microcontroller to get if it is your first, or if you just need something expensive...." Read more

    53 customers mention "Documentation"53 positive0 negative

    Customers appreciate the Arduino Uno's comprehensive documentation and tutorials, which make it ideal for prototyping and developing home applications.

    "...1. I absolutely love the simplicity of the development environment (IDE)...." Read more

    "...The Arduino concept is terrific, and has enabled a LOT of people to easily create smart projects...." Read more

    "...This device is a joy to work with! The Arduino site is full of documentation, example programs, and software to build on Windows, Mac or Linux...." Read more

    "...This a great way to get into programming, learn C++, or leverage your C++ skills...." Read more

    63 customers mention "Authenticity"36 positive27 negative

    Customers have mixed opinions about the authenticity of this Arduino board, with some confirming it is an Italian-made UNO R3 while others report receiving fake Chinese knockoffs.

    "...This item worked right out of the box. It's made in Italy, just like that fancy suit I bought for consulting gigs. Plug it in, and it turns out...." Read more

    "...bad way mine was packed just cements my thoughts on it been a fake Chinese knock off and what really got me mad was I used the 1 click buy system I..." Read more

    "...These boards are great Uno R3 boards if that's what you are looking for (Atmel 328: 8 bits, 16MHz, 32K EEPROM minus 0.5-1.5K for bootloader, 2K RAM)...." Read more

    "...Ordered on Oct. 22. So I was happy about that. However, this is not an original, it's a knock off...." Read more

    Works good so far
    4 out of 5 stars
    Works good so far
    Have tested this microcontroller with driving motors and solenoid valves, and it works well with the L293 motor shield (which is why I got it). I think it is fairly priced for the level of quality, it seems quite well made. I just need to figure out how to use it outside of Arduinos IDE and then it will be perfect.4/5 for me.
    Hide
    Thank you for your feedback
    Sorry, there was an error
    Sorry we couldn't load the review

    Top reviews from the United States

    • Josh Chinn
      5.0 out of 5 stars Works with Windows!
      Reviewed in the United States on March 1, 2025
      Size: Arduino UNO R3Verified Purchase
      Board works great! The R4 WiFi does not work with Windows so we were happy to see this model be recognized. The board was sent in a bubble mailer and had damage to the box but the board itself seems to be fine. A small box instead of a bubble mailer would be great. The board is really fun and we already built a range finder!
      Helpful
       Report
    • nh19926
      5.0 out of 5 stars 1st time ever trying an Arduino Uno - Interesting little thing. Learning to do simple things.
      Reviewed in the United States on April 22, 2023
      Size: Arduino UNO R3Verified Purchase
      I'm a senior nearly 70 and never touched any Arduino or anything similar. I wanted the device to reset a color printer item with an already written program. I have never written any code and boy am I learning. One simple character mistake and running the compile program will surely tell you. I am using the Arduino IDE 2.1.0 program with this Uno Rev 3. Nevertheless I am happy with this little thing and there are so many projects out there in the community, this will surely keep my mind going and my interest.

      Setting up was easy. I first got the Arduino IDE program (free on the net) and installed... went fine on my Windows 10 computer with no problems. Once installed, I connected the Uno Rev 3 to my computer via the USB port only (no ext power supply used). Plugged into the USB port, about 3 seconds (literally) later it already installed drivers and the thing was running. It selected Com Port 6 on my Win 10 system. On the Arduino IDE program you just have to make sure you select the Arduino Uno Rev 3 from the list... that is it, and your up and going. From beginning to end I probably spent 5 to 10 minutes doing everything to make it run.

      On Ease to use and Easy to learn, I gave a 4 star only because I have never done anything like this. If you are a pro or some kind of advanced user, or if I was, I would give a 5 star across the board. This is only my first day trying it, so I will update later on.

      I checked out Youtube video's and tried writing / typing 3 different programs on the Arduino IDE screen. I ran the compiler program on the IDE... said it was good, tested it in the simple serial monitor (included in the Arduino IDE) and was interesting to watch the board respond. I then saved my program for later.
      57 people found this helpful
      Helpful
       Report
    • ManojK
      5.0 out of 5 stars Very effective yet very affordable development tool.
      Reviewed in the United States on March 21, 2012
      Verified Purchase
      Regarding the board:
      Seems very well constructed and genuine to me.
      I used a spare USB cable and hooked it to a laptop with WindowsXP. Downloaded the software from [...] followed the instructions for WindowsXP and within minutes the 'Blink' sketch was up and running. Had same (smooth) experience on the iMac, in fact with less number of steps (no driver installtion step).
      With few LEDs, an 8 Ohm mini-speaker, few resistors and under half an hour I had couple of 'sketches' tried and tested already. My kids are now super-interested in electronics after enjoying the sweeping LEDs and interesting tones and of course the appealing Ardunio R3 board! I let my daughter change the delay intervals in a 'sketch' and she was so glad to see the effect right away.

      Bottom line: After running some sample sketches and my own programs - the board seems to be functioning well.

      Regarding the Arduino concepts:
      1. I absolutely love the simplicity of the development environment (IDE). You can truly jump into the interfacing and control aspects of a microcontroller device without getting bogged down by its internals, assembly instructions and potentially complex program download steps.
      2. This is a great learning tool to introduce yourself to the embedded software and the base hardware.
      Arduino R3 is probably one of the cheapest development boards out there yet very effective.
      Only other board I have had a chance to play with is the Atmel AVR Butterfly (which costs around $20) but the overall development setup is definitely more complex.

      So in case you have even a 'tiny bit' (no pun intended) of interest in the vast world of microcontrollers and electronics in general - go ahead and try this board.

      Note: Related purchase (from Amazon) which helped me a lot is - the book 'Programming Arduino' by Simon Monk.
      35 people found this helpful
      Helpful
       Report
    • Ordinary guy
      5.0 out of 5 stars The Real Deal
      Reviewed in the United States on March 2, 2015
      Verified Purchase
      When the world of Arduino was shown to me a few weeks ago, I was intrigued. After watching some Youtube videos, and reading online accounts, it became clear that the use of Arduino with various sensors could do some amazing things. The hidden "mad scientist" within me started to come out.

      Looking thru the Amazon reviews showed great ratings, BUT there were a few issues that popped up in some reviews. Some indicated that they received fake Arduinos. A few said there were some quality issues.

      Issue 1 - Fake Arduino? An online post suggested that the Amazon seller be cross checked with "approved" vendors as listed on the official Arduino web site. I purchased mine through Karlsson Robotics, and they are indicated as an approved Arduino "supplier". The first thing I did when receiving my Arduino is to check all the standards means of detecting a fake. Every item checked out, in particular the gold 504L device. I am 100% assured that this is a product from the factory in Italy.

      Issue 2 - Quality? The quality of the board, solder joints and devices appears to be just about perfect. There are no instances of incomplete or rough solder joints. Everything is soldered in a super smooth manner, probably from one of their production machines. It's an outstanding job. So far I've done a few operations with the board, and no issues have been observed. The board connected easily to the computer via an A-B USB cable (not included with the board).

      Bottom Line:

      Karlsson Robotics is a legit supplier, and they provided my Arduino board with zero issues. Highly recommended that you purchase though them. The Arduino board is top notch, and is ready to go out of the box.
      9 people found this helpful
      Helpful
       Report
    • Petronio
      5.0 out of 5 stars Calidad y entrega a tiempo
      Reviewed in the United States on March 7, 2025
      Size: Arduino UNO R3Verified Purchase
      Calidad y entrega a tiempo
      One person found this helpful
      Helpful
       Report

    Top reviews from other countries

    Translate all reviews to English
    • Amazon Customer
      5.0 out of 5 stars SATISFEITO
      Reviewed in Brazil on October 31, 2024
      Size: Arduino UNO R3Verified Purchase
      TUDO OK COM O ITEM
      Report
    • Carlos Rico
      5.0 out of 5 stars Excelente Producto
      Reviewed in Mexico on December 30, 2024
      Size: Arduino UNO R3Verified Purchase
      Nada que mejorar.
      Report
    • ENG.Bader
      5.0 out of 5 stars It’s great product, original green ATML329
      Reviewed in Saudi Arabia on August 11, 2022
      Size: Arduino UNO R3Verified Purchase
      ATML iC programbel chep , it’s all about it, green or blue, doesn’t mean anything

      Bay it as it’s ATML
      Report
    • Milan
      4.0 out of 5 stars Ok
      Reviewed in Sweden on July 9, 2022
      Size: Arduino UNO R3Verified Purchase
      Ok
      Report
    • Eyang Salim
      5.0 out of 5 stars It is working fine
      Reviewed in Singapore on August 29, 2020
      Size: Arduino UNO R3Verified Purchase
      In the beginning, no driver was detected using Win 10, After update windows 10 the driver was detected
      Report