CAN'T USE AT COMMANDS

Using Arduino Installation & Troubleshooting
#1

Hey there I'm new on Arduino and esp8266 just keep learning what's going on, I have a problem

I read that I have to update my ESP8266 using some programs(nodemcu) then I upgrade the modul using the sources then I realized that I didn't check if it is consistent or not but I already flashed it.(For knowledge I groundend the GPI O 0)

So now when I wired the breadboard arduino uno and the esp8266 (according to guides of course) I can not send AT commands from serial monitor.When I write AT to serial monitor it responds nothing.
Anybody help?

#2

Which guides ? (links)

How is it wired (schematic)

Which ESP ? (there are lots of different ones)

OK maybe go HERE first and come back and fill in the many missing blank bits.

#3

If you installed the nodemcu firmware then it's to be expected that you can't use AT commands. You need to install the AT firmware if you want to use AT commands.

#4