Hallo, I have bought clone wemos esp8266.

Electronics
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1

Hallo, I have bought clone wemos esp8266. And when i connect esp8266 to pc a se warning that the device was not recognized, this modul have rs232 to usb ch340 and others devices with this chip work without any problem. Only this modul have problem. At home i have too others wemos esp8266 and it work without problem. Only this clone does not work and if I it connect I se that device was not recognized.

I have install newest driwer and too i have test other Pc and still same problem. I have bought only new chip ch340 and change it and still this problem. please can you help me ?

2

Hi, could have a dead / faulty CH340 chip ?

3

What are the VID & PID of this device ?
It’s possible that itsn’t CH340.

4

I bought new chip ch340, and changed it. Still same problem.

I have question, in chip ch340 is any firmware?

5

Hard to say, try to measure D+ and D- path from chip to USB

6

There might be a short-circuit on the board. Be carefull not too ruin your USB port

7

Silly querstion, but you checked 5V vs 3.3V power?

8

Réinstallation thé ch340 driver