ESP8266 Community Forum

Hi There,
I've just gotten my nodemcu all hooked up and lovely, but it won't talk to the Arduino IDE. I get error messages like

I have successfully rewritten the nodemcu firmware using

If I connect serial monitor (9600) and 'reset' i see

and if I type AT, I just get ">>" at the prompt typing AT again gives me "stdin:2: '=' expected near 'AT' "
Anyway, I have no idea what's going on at this stage , so any help is appreciated, thanks!

Bump!
I tried this again this past weekend and I still get nothing from the arduino. Any advice or is my nodeMCU just buggered?

Thanks,
JR

Have you tried holding the flash-button down while pressing reset? That should place it in a bootloader where no other code is executing and the issue with wrong direction for data should disappear and uploading a sketch with Arduino IDE should work fine. It's sometimes necessary to do it like that if e.g. your sketch just happens to write to the serial-port when the IDE tries to initialize uploading, and it would appear that the Nodemcu - firmware does exactly that.

jrubins wrote:and if I type AT, I just get ">>" at the prompt typing AT again gives me "stdin:2: '=' expected near 'AT' "
Anyway, I have no idea what's going on at this stage , so any help is appreciated, thanks!

If you uploaded the Lua firmware, don't expect any AT commands to work : AT firmware is one thing and Lua another. They are 2 different firmwares.
When you have the Lua prompt ">", simply try some Lua commands.
(I'm not familiar with Lua, so, look at the Lua sub-forum to get some simple example)