This photo shows two boards. The upper is a real Arduino Uno. When I plug it in the Arduino 2 IDE immediately recognizes it and the LED glows green.
The lower is probably a knockoff, and the IDE does not recognize it. LED glows red and a second LED blinks rapidly red. Does anyone know what this board is and whether there is a driver that works for it? Unfortunately we have several of them.
The lower board is still an Uno but it has a CH340 (I think) so you may need to install drivers for it.
See here >> Using Arduino IDE with unofficial Arduino clones bearing CH340 chip | by Andrey Semenyuk | Dev Genius
For more try a search for "clone uno usb driver".
It is a china clone, I have no problems using them but I use Linux, not windows. No drivers etc to worry about. I do not use IDE 2.x so that may be your problem, not sure.
I use the same boards, Win 11 with no special driver installation, works "out of the box". Only a different USB connector type.
Are you sure you selected the serial port correctly?
Hmmmm.... you are using IDE 2.0 and I am using 1.89 though...
Thanks, groundFungus, that was exactly the link I needed.
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