I bought 3 Arduino nano clones from Aliexpress and have been having problem with uploading. Strangely I was initially able to upload a blink sketch but not anymore. After searching online and on the forum I found that the issue is the chip 328PB used on these clones, which is different from the 328…

What I posted earlier might help. [image] How to configure Arduino R3 ATMEGA328PB 3rd Party Boards Hi, guys. I bought this dude here: https://s.click.aliexpress.com/e/_DD0TYk9 but I have so many troubles trying to connect and upload code (even burn the bootloader) So, h…

@camsysca Thanks a lot. I had missed your post when searching! this was the key issue: Note - I already have the CH340 USB driver loaded, as I use it all the time for my Nano clones. I installed the driver (instruction and download link here: [ How to Install CH340 Drivers - SparkFun Learn ] th…

finger crossing didn't help... strangely enough after successfully uploading a sketch on a nano I repeated the process for my other two boards and it didn't work. So either I have done something different the first time without realizing or this things are just temperamental.... the driver is now i…

Which bootloader did you flash? The AVR Optiboot one or the Minicore urclock one?

Was it you who left a message just a minute ago? the message has been removed... I follow that advise (closing serial monitor, removing the board, restarting IDE, then replugging the board) and it worked, but 1) did not understand what I did wrong in the first place and 2) I had to repeat the proce…

[image] fluxia: Was it you who left a message just a minute ago? the message has been removed... I follow that advise (closing serial monitor, removing the board, restarting IDE, then replugging the board) and it worked, Guilty as charged. I did start with that, but then figured I'd check wh…

It's just a simple sketch that prints out the word "working" on the serial monitor every second. :slight_smile: in the meantime I found this [ MiniCore uploading problems ] and a further chatgpt enquiry gave me this response: That behavior confirms that the bootloader is only active briefly after po…

That is an interesting bit of information. I was not aware of the diode mod. There seems to be a variety of these Nano clones around. A lot of them now seem to have the USB-C connector although its still possible to get ones with a Micro-USB port. I ordered a Nano recently and it has the 328PB onboa…

[image] BitSeeker: its useful to have a USBASP programmer to hand. They are quite cheap and will allow you to work around the serial problem and reset a blocked board. Thanks for this advice. I think I will buy one of these... read that it will erase the bootloader, which is not a big deal i…

[image] BitSeeker: There is also a known bug in relation to the Serial Monitor, especially if its open in another window, although I have not experienced this myself: I am not sure whether this might have been fixed in more recent versions of the IDE or whether it still surfaces occasionally. …

@ptillisch thank you but this doesn't work. I have plugged in the nano via a switched USB HUB to avoid taking it out and it from the usb. Switching the nano off and on just before uploading is the only thing that consistently work, so it must be a issue with the board reset(?)... All the three nan…

Arduino nano ATmega328PB upload issue

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camsysca April 29, 2025, 7:37pm 2

What I posted earlier might help.

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Arduino nano ATmega328PB upload issue

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