ESP8266 NodeMCU wasnt online yet

[PeteKnight]

What version of the ESP8266 core are you using?

Pete.

[farhadgravi]

im using ESP-12E as a model, and vendor DOITING

[PeteKnight]

I’m not talking about the hardware, what version of the ESP core is installed in the Arduino IDE’s Board Manager?

Pete.

[farhadgravi]

how can i know the core of ESP?

[PeteKnight]

Tools > Board > Boards Manager > esp8266

Pete.

[farhadgravi]

[PeteKnight]

@PeteKnight

In that case, I’d say that there is either a problem with your NodeMCU or your computer.

Pete.

[farhadgravi]

other NodeMCU work with my computer but my own one not work.

[PeteKnight]

Well that narrows it down a bit doesn’t it?

Pete.

[farhadgravi]

now im using another NodeMCU its working properly and my problem is solved with new one

many thanks for your effort