V4.0 Development Board for Arduino UNO R3 with USB Cable

Initially the Keyestudio board was not recognized on WIN10. After checking some of the reviews, and updating the CP2102 driver, it worked perfectly. Although the pin descriptions are written on the board, I would prefer if the pin descriptions were also written on the headers as well. All-in-all a great development board at a great price.

I saw this for $9 and figured why not. I figured worst case, I could at least use the 'Atmega328p' which run about $13 to $15 for two anyway. It works great! I ended up using it to prototype my design instead of my Arduino Mega and when I was done, I actually loaded it with the "Arduino as ISP" sketch and used it to flash two breadboarded AVRs. This comes nicely packaged, a box inside a box, and includes an 18" USB cable. I also think the Black/Yellow is a nice change from the usual blue or all black PCBs. The top layer screening isn't as good as the original Arduinos or more expensive clones but you can still read the lettering.

I bought this while ago great for testing and prototyping added it to my Mr.Cupcake from fnaf. 3D printed the shell added a servo shield and some servos BAHMM Awesome eye movement! granted the memory doesn't store a lot a movement as it is a micro processer but will do great as a cheat alternative!

A really nice arduino uno r3 copy. Works well and has a good build quality. No issues and worked straight away without any need to RTFM

Una opción muy funcional de sustituto de Arduino se comporta igual, solo ya que configúralo con tu equipo y listo a usar.

It's an Arduino UNO V3... not much else to say about that except that it works as well as every other UNO I have from every other company that makes them. Two things about this board set it apart from the rest. They are subtle details, to be sure, but they make a BIG difference. One is the printing on the board is high contrast. The board is black. The V3 connectors and the pin labels on the board are bright yellow. It is much easier to see than black printing on a blue board. The printing itself is crisp and can be easily seen. Two is socket for the ATMega chip. It's a little easier to get the chip in and out than sockets used on other boards. I realize that most IC sockets have a life of around 10 insertions but this one seems a little tougher. The reason this is important, to me at least, is that I use the board to develop sketches then move the programmed chip to a PCB, usually for my robotic drone projects. Weight in a drone is critical and anything you can do to save a few grams here and there can dramatically improve flight duration. All you need to run an Arduino Uno sketch is a programmed ATMega chip, a 16mhz Xtal, and a couple of 22-pf capacitors. You don't need the whole board. (Caveat: you also lose some of the circuit protections that the boards provide, especially when it comes to overvoltage. It is very easy to fry an ATMega chip if you make a wiring error.) Just a quick note: I eventually replaced the fixed socket with a ZIF socket (Zero Insertion Force, also available from Amazon for a good price). Individual ATMega chips can be purchased here in a 10-pack but I would not recommend doing that until you are very comfortable with DIY circuit making. Once you are, however, your project world will open up like you never imagined and you can take your next steps to truly become a Maker. Build a bunch of projects! Learn and have fun!

Work as well as real Arduinos and at a third of the price.

This works good but does not have the same 5v options as the official unit.

梱包は簡単でしたがちゃんと箱に入っていて、ピンが曲がっていたりする安物中華製品ではありませんでした。

The quality of the product is very good. I am highly impressed with its performance. I found this board to be an excellent choice for projects.

work very well for my Drawbridge Amiga project!

Exactly what is says fully Arduino Uno compatible.

After spending 4x this on a brand version and then buying this version, I honestly cannot tell the difference in performance. It is very well made and just as good as the official Arduino Uno.