HiLetgo 3pcs Nano V3.0 ATmega328P CH340G 5V 16M Mini USB Micro Controller Board Development Board with PIN Headers Pin Unsoldered

I have used a lot of this brand of arduino nano. I have had two out of 30 that were defective and not able to load code. That said they are so inexpensive, They are almost disposable. This makes them great for projects that have limited use or you are making to give away. Most of my projects are controlling address while it is, controlling service, or data collection. These boards have worked great and all these scenarios.

I needed to install older ch340 drivers. ch341ser.exe available on a sparkfun link that someone labeled as a 2018 version on the arduino.carbon fiber forum, when installing it says 08/08/2014, 3.4.2014.08 and not 2023After uninstalling the latest drivers and putting these in the nano connects and uploads sketches great. The latest driver would let me upload only after ‘scanning for device changes’ in device manager and the serial monitor would not work at all, very glitchy

Follow the seller's instructions in the product description to get and install the driver. If it takes you to the Chinese site and you can't download, search online for CH340G drivers. Once they are installed, start the Arduino IDE and attach the microcontroller. From the Tools menu, select the Board option and choose "Arduino Nano." Under it, select the COM port option and make sure the right port is selected. Below the Get Board Info option is the Processor option. Mine would not work until I selected the "Atmega 328P (Old Bootloader)" option.It only took me a few hours to understand and implement this correctly. I'll probably stick with the ESP32-S2 Mini boards in the future but I'm teaching my wife to code these and this was worth a try. Having to hunt down and install drivers where the ESP boards gave you the option within the Arduino IDE, plus the extra pins on the ESP boards and the similar pricing makes the ESP32 S2 Mini a better choice, I believe. On the other hand, you do have to manually switch the ESP32 boards to receive uploads, so do whatever works best for your application. I can run three Nema motors with this board or 4 with the ESP boards.

All 3 boards work. There is no documentation from the seller but it is easy to program once you figure out the board type to select in Arduino IDE.Select the board from Tools->Board->Arduino AVR Boards->Arduino Nano.Select processor from Tools->Processor->ATmega328P (Old Bootloader)First try to upload Blink program to switch on/off the in-built LED. The pin number for in-built LED is 13 for this board.

Tried everything in the q and a (old boot loader etc) but still couldn’t get a very basic blink sketch to upload

I used these for a parking sensor project. They worked great.

Interesting that HiLetgo ships some of these with either bootloader.All three of mine came loaded with the Old Bootloader, but otherwise appear fine.No issues soldering headers.If you want to use such as is, choose (in the Arduino IDE):Tools->Board->Arduino AVR Boards->Arduino NanoTools->Processor->ATmega328P (Old Bootloader)And all should upload well.If you want to update a Nano to the current (Optiboot) boot loader,and you should (speed, bug fix, etc),You’ll need to solder in the 6-pin ICSP header(helpfully provided along with the single-row header strips)to the *top* of the board,and you’ll need an AVR ICSP programmer,or another Arduino 328P.Potentially even one of the other Nanos in the package!(I use a dedicated-to-the-task USBtiny ISP)As well of course some wires and the latest version of the Arduino IDE.Detailed instructions are easily searchable.Otherwise, these seem like perfectly serviceable Nano w/CH340 clones.

The board behaves like a normal Arduino Nano (with old CH340 and the old bootloader).The only problem I found is that the pads of the unpopulated 6 pin connector (for ICSP) were not properly connected: GND (pin 6) was floating and VCC (pin 2) was very high resistance, i.e. the voltage broke down under load. Note the GND and VCC pins on the edges of the PCB were properly wired and worked correctly.

Not good quality. Pins are damaged.

good value

1 of 3 arrived broken requiring re-soldering