What do you expect? It's a CH340G based CLONE of an Arduino UNO R3
For anyone who isn't familiar with these or Arduino in general:
The genuine UNO uses the Atmega8U2 as a USB driver to create a virtual serial port(COM4, COM6, etc),
These cheap Chinese clones use the CH340G in place of the Atmega8U2, that is NOT usually a problem for most people, and in fact I've had a much better experience with the CH340G in programming specifically, applications I create to communicate with my Arduino based projects have much better luck whereas the Atmega8U2 will give me trouble and sometimes requires addition steps to be taken to make my applications compatible, the CH340G has also proven to me to be a faster solution.
However one slight drawback is the surface mount MCU package, in my genuine Arduinos i can simply place my Atmega328p DIP package onto a hand-etched or proto board with the DIP socket soldered in place, this is not possible using these UNO clones, which is not a huge deal but will definitely limit your options if you intend to make a lot of stand-alone devices. Thankfully you can solder some extra male headers to the bottom of the clone to fit it on a protoboard with a little rigging, or just make a male-female R3 compatible socket to plug the entire board into.
For the most part, you can use it in place of a normal Arduino UNO R3.Read full review
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