ELEGOO UNO R3 Controller Board

I bought the ELEGOO UNO R3 for a DIY project to automate water refilling in my aquarium and to control automatic dosing of plant supplements. The board worked flawlessly and was recognised instantly in the Arduino IDE. Programming was straightforward, and compatibility with libraries and sensors made the whole project much easier. The board feels well made and stable in operation, even when running continuously. Having plenty of I/O pins allowed me to connect multiple sensors and relays without any issues. The included USB cable is a nice touch, making it ready to use straight away. Overall, this is an excellent Arduino-compatible board that’s ideal for DIY projects, learning, and automation tasks. Great value for the money and highly recommended.

This board comes with a genuine ATMega328P and works just like an original board at a much cheaper price. Highly recommended

Wow, what an amazingly great piece of hardware this is - I'm new to Arduino and the support that the platform has on the internet with the enormous array of addons that are available to unleash your ideas into reality. I has heard of these devices several years ago when working on a project for the Exhibition of the North and I was aware that certain installations were Arduino powered to make things happen in time to one another. From this I didn't really look much more into the world of open source micro processors until recently when a project came up when I thought back to the Exhibition. I researched and purchased the Elegoo Uno R3 board because of the perfect amount of digital input/outputs that the board offered, and the compatibility of the Elegoo with other components that matched the genuine Arduino specifications (at a much lower cost). So, with this platform your imagination is really the limiting factor with loads of available addons and other common industrial components that all work perfectly with the microprocessor - if you can think it, in theory you can build it using this as the 'brains' of the project. There are plenty of digital input/outputs for controlling external devices and a small set of analogue pins that can be used with rheostats etc - to my excitement I have recently discovered that using an I2C Serial Adapter Module allows you to use these analogue pins to control LCD screens and the like whilst only taking two pins rather than the rake of digital pins usually required - brilliant! (two analogue pins plus a 5V VCC feed and a GND ground pin that can be supplied via a 5V rail). The programming part of the device can be slightly daunting at first, more so if you are new to coding etc - but it really isn't that hard to learn as long as you stick to the rules of the language, there are hundreds and hundreds of videos on YouTube and walkthroughs on the internet to follow to integrate each component - if you can methodically place the code within the 'rules' of the system then it really isn't that bad at all to get things moving as you want. So, would I recommend the Elegoo Uno R3? Absolutely 100% without any hesitation - it is a fantastic platform to incorporate into your project if you need processed control with a great backup of online resources and physical add-on devices to allow the board to 'capture' information or 'control' almost anything. It can report back to itself or via bluetooth to your phone, Wifi etc. Really amazing piece of technology at a fantastically good price. I honestly wish I knew of these devices years ago! Don't be scared off with the coding, persevere as once you get the hang of it - it really isn't that hard to learn. I purchased the R3 version to build my prototype, then the Nano version to build the first few 'in the field' experiments, both versions work in the same way except the Nano is way smaller.

Nice board, but would willingly pay difference for turned pin socket for the 328 chip.

Very high quality. Would definitely recommend, great value for money. Works perfectly with Arduino software.

Great little board. Works just like the Arduino for less than half the price Im using mine to control 2 fans for a wind simulator on my racing rig Works great with simhub

Very good quality

Unable to upload a sketch onto the board. I kept getting an error message “unable to open port com3 for programmer Arduino” plus a flashing orange light. According to the Arduino forum this error message might be due to the standard of USB chips used on cloned boards. I tried swapping the Elegoo board out for an Arduino R3 board and it all worked fine. I swapped the boards back and it wouldn’t upload again. Sticking with Arduino boards from now on - more expensive but at least they work.