Esp 8266 5 volt relay module
Got the module installed the ch340 usb drivers ok 👍 tried to flash tasmota web installer wont find the device says its ported .says device working properly drivers installed. Wonder what it could be?
You have almost infinitely more relevant experience than me .. and I have not used tasmota.
I just wondered if it was convenient to try downloading a trivial program (Blinky or simple Serial.println program) from Arduino IDE to your CH340/Esp8266. Hopefully, It would check out the hardware, etc.
I note the Tasmota website https://tasmota.github.io/docs/Getting-Started/#needed-hardware
says (alongside other useful stuff):
Many CH340G devices will not work, the "golden CH340G" has a voltage regulator on it to supply enough power to the ESP device - many do not. The ESP requires at least 150mA, many 3.3V serial programmers do not supply this much current as many serial programming tasks do not require a large amount of power.
But I presume you have been down this path before...
Good luck, Dave