Hello,
I bought an az delivery ATMega328 microcontroller board and when I started it for the first time, it was not recognized by Windows. According to the manufacturer, if you have this problem, you should install the CH341SER driver. But even after installing the driver, the microcontroller board was not recognized. It is recognized but as an unknown USB device.
Could it be that the board is defective?
I haven't found any case where the same problem occurred...
Best regards
Finn Hansen
Windows if funky, you may need to reboot.
Your USB cable may not be a high-enough quality
You can use device manager to see the enumerated port:
Microsoft offers USBview utility which is a nice addition:
How to download and run the Windows version of USBView (the USB device viewer) - Super User
Clone boards are notorious for such issues.
Make sure that the USB cable is a data cable, and not a phone charger cable.
I use the cable that came together with the microcontroller.
Make sure that the cable that came with the microcontroller is a data cable.
what does it say in "device manager" on windows?
when you connect the device it should open a tree from the list (either universal serial bus or serial port) and should display a new device.
if it appears on universal serial bus as unrecognised device with the writing (device descriptor request failed) then you have a botched cable or a fault in the CH340/FT232/ATMEGAU16, which is the IC responsible for the TTL UART to USB conversion.
if it appears in the serial port list, the the USB to TTL UART works as intended and your IC has either interrupted RX or TX traces, or is outright blown.
if it doesn't appear in any of these 2 lists then you are using a charging USB cable without the data lines inside, just use another one
while i was typing you posted you screenshot, what i see is the (device descriptor request failed), so it isnt a driver issue, it is either a damaged cable, blown USB to SERIAL converter on the board, or you have an ATMEGA32U4 which doesnt have a USB to SERIAL converter and needs a bootloader to work.
what that error means is that the PC sent a data packet trough USB to request for the device descriptor data packet, but some time passed and you PC didn't get any response, so the IC on the board is inoperative
Ok, thank you!
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