Review on Arduino Nano V3.0 (CH340) board module based on ATmega168 microcontroller compatible with Arduino. Connector soldered by Boyan Da Anov ᠌

Of course, you can order cheaper from the Chinese, but then you have to wait a long time. Delivered here in just a day. So it's a pretty good option. With its pros: A good Chinese analogue of the Arduino nano. Works properly. Differences from the original - perhaps only the price. A miniature scarf, a programmer on board, so that you can directly integrate it into the device being developed. Memory and performance is quite enough for any household purposes (well, except for multimedia systems, it will not work). If you have imagination and fairly direct hands, you can find a bunch of applications in the "smart home" system. Different cons: Perhaps the price. For such a price tag they could sell at least on the basis of the 328th chip