ESP8266 Community Forum

- Fri Mar 01, 2019 3:06 am #80871 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

- Sun Mar 03, 2019 8:40 am #80890 you need to install a driver I think its the CP2102 driver if you are on windows.

- Sun Mar 03, 2019 9:18 am #80891 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?

- Mon Mar 04, 2019 4:47 am #80904

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.

Assumption is the mother of all f*ckups. At least: that's what I'm assuming.