ESP8266 Community Forum

Hello to everybody
I am beginner,
I got a nodemecu v3 and this problem:
when I connect the usb cable it is not detected instead If I connect at the same time external supply ( + 5v) the computer's port switch up and down and I can't upload anything.
Any suggestion to solve the problem?
Thanks to everybody

you need to install a driver I think its the CP2102 driver if you are on windows.

I would check the USB lead; some are only for power. A mobile phone one will usually work.

If you are coding using Arduino do you get any error in the IDE?

icons wrote:you need to install a driver

Please note that some (clone) boards use another USB-convertor chip.

• If the chip next to the USB-connector Is squared, you need to install a CP2102 driver
• Is the chip next to the USB connector is rectangular, you need to install a CH340g driver

Also check with another cable, like Bonzo suggested; I've been banging my head once with a power-only cable in the past.