SparkFun will be closing early at 3:30 Friday 5/27 and remain closed Monday for Memorial Day (5/30). Orders placed after 2pm MT on Friday (5/27) will process and ship out on Tuesday (5/31).
Description: This is the new Arduino Uno R3. In addition to all the features of the previous board, the Uno now uses an ATmega16U2 instead of the 8U2 found on the Uno (or the FTDI found on previous generations). This allows for faster transfer rates and more memory. No drivers needed for Linux or Mac (inf file for Windows is needed and included in the Arduino IDE), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc.
The Uno R3 also adds SDA and SCL pins next to the AREF. In addition, there are two new pins placed near the RESET pin. One is the IOREF that allow the shields to adapt to the voltage provided from the board. The other is a not connected and is reserved for future purposes. The Uno R3 works with all existing shields but can adapt to new shields which use these additional pins.
Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux).
Note: The Arduino Uno R3 requires the Arduino 1.0 drivers folder in order to install properly on some computers. We have tested and confirmed that the R3 can be programmed in older versions of the IDE. However, the first time using the R3 on a new computer, you will need to have Arduino 1.0 installed on that machine. If you are interested in reading more about the changes to the IDE, check out the official Arduino 1.0 Release notes!
Not sure which Arduino or Arduino-compatible board is right for you? Check out our Arduino Buying Guide!
Based on 67 ratings:
1 of 1 found this helpful:
I bought this (supposedly) Original Arduino board a few weeks ago and the Arduino IDE shows me that it is not a Certified board. It works fine, but I preferred to buy from SparkFun and not Amazon because I wanted a certified one!
The Uno and other “official” Arduino boards such as the Mega, are not manufactured by the original crew. The error you are seeing is the Arduino.cc crew bringing attention to the fact that your board was made by Arduino SRL. However, at this time, Arduino.cc is not manufacturing a Uno board of their own. We suggest the Arduino Pro and Pro minis from Sparkfun as they do pay a royalty from each item sold back to the Arduino team. Additionally, the RedBoard is a great alternative is you choose to not purchase Unos
1 of 1 found this helpful:
Very easy for students to use and lots of useful applications.
2 of 2 found this helpful:
The item itself is perfect. Great functionality and you can use it for anything. Just one warning…You will have to fight many many battles to get any functionality out of this on Windows 8. Even if you go through the ordeal to allow unsigned drivers, install drivers from different compatible technologies, you will not have consistent connectibility. Mac works fantastic. Any other windows, you’re set. Just be aware.
1 of 1 found this helpful:
i need a microcontroller for a home-brew sous-vide and the arduino is a nice and simple core that powered the operation. will definitely use the arduino again for other home projects!
5 of 5 found this helpful:
Bought it to use as a test mule for my new designs, and have become hooked. Seriously, this thing is more useful than duct tape and WD40. Absolutely amazing, saved some cash from the Arduino website and got a real one, not some cheap knockoff. Thanks sparkfun!
4 of 5 found this helpful:
Sparkfun should make clear that this is an arduino.org and not arduino.cc board. I’d rather buy a clone from seeed or another company than from the guys that are basically screwing up the arduino brand.
If you are not interested in a Arduino Uno from the .org crew, we suggest you check out our Redboard! https://www.sparkfun.com/products/12757
2 of 5 found this helpful:
It’s very good !!
I used the Arduino board with the Olimex SHIELD-EKG-EMG to create a EMG-EKG sensor unit that can display the output graphically using a laptop running Windows 10.
This product is great; it is just about what I expected. I use it in conjunction with my raspberry pi to hook up lights, buttons, motors , etc. Only complaint I have is it does not come with the USB to hook it up. It is a standard printer cable.
Works great. fast shipping.
I’m just starting to learn arduino and it’s already awsome !!! Very easy to power, to connect to pc aver usb, to program and load sketches…This board have a big potential to do almost everything you want, just very user friendly and a must have for DIYers, geeks or any curious guys !!! ;p
Bought two and gave one to a 15 year old young lady who has taken off in her programming. I enjoy teaching young people and watching them excel. Both the units worked perfectly.
i really liked it , and it works very well
ive ordered so many parts from amazon last month that arent coming for another month, and last minute i order the uno from you guys and i get it in less than a week, and it got shipped out within hours! it’s my first time ordering from you guys and i will continue to do so
New to Arduino, and only kinda knew HTML and CSS, but figured code is code. I had this up an running super fast, and figured out how to read a few sensors and control motor speed via PWM on day one! Instantly I started to think of all the things I could do with one of these. The usb port and dc power jack make this very easy to hook up and use. I would highly recommend this board.
0 of 1 found this helpful:
I bought an R3 because I had read on arduino.cc that it would not suffer the reset on serial connection problem that other boards have. That does not seem to be the case, this board still resets itself as soon as I connect over the serial interface.
Hi, I haven’t heard of the R3 not resetting when terminal is opened. Actually from all of my use cases, I have found that it does reset. However, in doing a bit of research on this topic, I found a suggestion that may help you. It appears that if you place a 10μF capacitor between Reset and Ground it will prevent the auto reset permanently.
Nice open prototyping platform for beginners just getting started with microcontrollers. The pins are labelled on the board & the side of the headers so it’s easier to see what pin you’re connecting to. I’m currently using this board to run grbl 0.9 for a tabletop CNC design from OpenBuilds & it was really simple to flash & get running. I do recommend anyone purchasing one of these also grab a few spare ATmega 328 chips (https://www.sparkfun.com/products/10524) in case you make a mistake & release the magic smoke.
This is my first venture into electronics. The Arduino has proven to be a very enjoyable learning tool. I look forward to learn about the Arduino and add accessories to the micro controller as I continue. For novices to electronics like myself, I recommend the use of the Arduino.
Best thing you can buy as an entry level for beginners. A lot of support and very easy to use. Cross platform IDE and very helpful forum. A very vast range of third party parts that fit perfectly.
Couldn’t buy a better product even if I wanted!
Very satisfied. If you haven’t bought one yet or you are still undecided, wait no more, just buy it. I promise you that you won’t regret it and you’ll find a lot of tutorials if you have no idea what to do with it.
Worth every penny.
My initial attraction to the Arduino Uno R3 was that it runs with C/C++, a language I’m familiar with. So far it, and the Xbee attachments have performed flawlessly, just as the community (hobbyists/engineers) has advertised. I’m very much enjoying my first project and am already dreaming of others. I find it most satisfying to work with a quality product while having the immense support of the manufacturer and it retailers. Another very much appreciated group I turn to for help and advice are those sharing their experiences over the Internet.
great microcontroller with easy to use IDE
Upon plugging it in, I get the popup message : “This board comes from an uncertified manufacturer….” I would like my money to support the original crew.
Hi, I’m sorry about this. The Uno and other “official” Arduino boards such as the Mega, are not manufactured by the original crew. The error you are seeing is the Arduino.cc crew bringing attention to the fact that your board was made by Arduino SRL. However, at this time, Arduino.cc is not manufacturing a Uno board of their own. We suggest the Arduino Pro and Pro minis from Sparkfun as they do pay a royalty from each item sold back to the Arduino team. Additionally, the RedBoard is a great alternative is you choose to not purchase Unos.
I like the Uno - R3 because I am very familiar with its capabilities. It is a complete microprocessor platform, ready to be put to work. I often use them in non-Arduino projects. I also like the Red Board for the same reasons.
Sparkfun shipped it fast and the MCU as I call it rocks right on through it’s loop functions. I think this is were to start if you want to learn programming. Great little board that could? Thanks, sparkfun
This is the non-SMD Arduino Uno - R3 board. Exactly what I wanted … at a good sale price. Should have purchased ten more as same does everything that I expected it to.
These things are great for little projects. I popped one of the Breadboard shields on it, and with one TMP36 and 3 wires (and a little programming) I was sending temperatures to my Computer through the USB cable. And I know many people have done much more complicated projects.
I’ve used Arduino Unos in the past and they have always been a solid little micro-controller for simple projects. I can’t say I’m testing the limits of the unit since I only run 20-30 lines of code at a time with my current project but it always does what you tell it to do. Only issue Ive experienced is using the Rx Tx pins while connected to the USB port of the computer can cause the PC to not recognize the board and you need to unplug and reset the board and then the PC will recognize it. All in all, great board for beginners and small projects.
works fine, no problems
The pin printout on the side I needed for the longest time, and its a nice machine that treats my old computer as if it was new, and It took my sketches without stress! I am a neardy Dad and my kids like to see Arduino in action. Thank you for the Sale also!
I fell in love with it right when I opened the box. And SparkFun does a really good job on shipping. They shipped just a few hours after I order and it took pnly two days to deliver! I’m impressed!
the customer service was great and shipping was fast. Especially considering I ordered 43 UNOs at once! Thanks sparkfun!!!
Works great. I’ll be ordering more boards in the future.
Downloading and working with the SMARTGPU2 libraries is a challenging.
(My 2nd one), smoked the first one,trying to run 4 stepper motors on a 298d & 293d, bread board got kinda full of wires & I plugged the 12 v power into the UNO. corrupted the memory, had to download new IDE (no problem) wonder if it is the atmega 328 on the old one??, new one works Great!!
So been using Arduino or the ATmegas a while now and I have done a lot of neat things with them. As time has gone by I have found this guy, which requires a little learning but worth it:
If your IO ports needs are not excessive (14 digital and 6 analog pins) and your sketch is of medium length (500 lines), the Arduino Uno R3 is perfect. Those limitations are not excessive and in many cases can be extended with simple external circuits. It also has I2C and SCI interfaces for use with many different shields.
It worked great. I am learning a lot.
Meets or exceeds product description on quality. Works great with no issues out of the box. Highly recommended.
Because my project progressed so fast and smoothly my partner wanted to implement it immediately!
Onto the next project!
Working perfectly and price is ok , lets order from sparkfun..
Arduinos are great for quick set up to control experiments. Even better is Sparkfuns support. Their guides make set up quick, painless, and fun. Keep up the good work Sparkfun!
Works well, no issues. Good price, too. Thanks sparkfun!
The title says it all. A great board for the project I am building.
Amazing technology. I built my first computer IBM AT 10 megahertz . Telling you my age, the credit card size at 16 megahertz. I’m learning a lot about electronics, my background is Mechnical engineering. I highly recommend this open source and generous people supporting the Arduino uno.
I am a computer teacher and I use this board in my class, I love it.
Still new to it. But its amazing.
This is my second Arduino Uno. The previous one came with a starter kit and I ordered a wavshield with it so it is dedicated to a specific application that I have in mind. I needed another Arduino Uno to play with so I could learn to develop other applications. This one from sparkfun was available and the note that told me to order the updated IDE was helpful. It works and I’ve been able to apply sketches from the Arduino Cookbook. I’m having fun and in geek heaven with this Arduino board.
Since it is open source. it is easy to program. Also, the board has a nice design. Till now, it is working great for me. Thanks Sparkfun!
The Arduino Uno R3 is a solid microprocessor. There is a complete set of libraries for adding all sorts of inexpensive sensors. The device is fairly rugged. Its easy to program.
Upon connecting it to my computer, every single time it used to say that it was not a certified board. Other than that I had no issues.
The Uno and other “official” Arduino boards such as the Mega, are not manufactured by the original crew. The error you are seeing is the Arduino.cc crew bringing attention to the fact that your board was made by Arduino SRL. However, at this time, Arduino.cc is not manufacturing a Uno board of their own. We suggest the Arduino Pro and Pro minis from Sparkfun as they do pay a royalty from each item sold back to the Arduino team. Additionally, the RedBoard is a great alternative is you choose to not purchase Unos.
This is less powerful than a Raspberry pie, but is very simple and straight forward. The documentation and forum sites easily answer any questions that you might have when starting out. The example sketches (programs, for those who haven’t started with Arduino yet), are a great learning tool and you’ll have a sketch of your own up and running in minute or hours instead of days. My only complaint is that you are limited to the number of digital and analog pins, but then you could connect more Arduinos together as a system.
Able to learn coding and circuitry quickly without wasted time with non value added details. It’s all packaged for efficient learning.
Extremely easy to use, very versatile. I run it on Windows 8 and have had absolutely no problems.
I was able to make useable things for around the house.