WYPH Mini Nano V3.0 Module ATmega328P 5V 16MHz CH340G Chip Microcontroller Development Board for Arduino Without USB Cable (Not-soldered Nano 3pcs)

You will need to load the bootloader! Works well if you use a second Arduino as the programmer.The product description should say "The bootloader will need to be uploaded. These boards come with a generic bootloader. Not an official Arduino bootloader."

These work and can be programmed directly USB. Hard to tell if you will get the old or the new bootstrap loader code on it - check both with the IDE when you are uploading.

It would be easy to think some of these are faulty. I've bought this a dozen times, and the most recent batch had a mix of 2 different bootloaders. After successfully programming a couple of them, I came across a few that wouldn't respond. Glad I thought to try the official bootloader, since that did the trick.Otherwise, they get the job done. Fair product at a fair price.

2 out of 3 chance of actually working. Also sides are not sanded. Watch out for fiberglass slivers.

After reading other reviews I soldered all three up and loaded several programs I know work. All three worked as advertised. I’m happy so far. I’ll update this review if I have issues in the future.

Board finish was a little rough, but otherwise, decent. To get this to talk to the Arduino IDE, you need to install the drivers for the CH340 chip (there are plenty of tutorials online) and then in the IDE, select Tools > Processor ATmega 328P (Old Bootloader).

My sketches worked fine on the boards i already had but would not upload to these boardsThe trick is to select tools --> processor --> (old bootloader)after that it will uploadthis indicates that this item is not the most current version of the Arduino Nano

This is a good product used it a lot. Needed a couple fast, so had to pay a little more here to get the better shipping