ESP8266 Community Forum

- Wed Jul 13, 2016 12:08 am #50673 Hi,
I just got the NodeMcu esp8266 12E V3 module.
Now, I am a complete beginner. I have 2 questions.

1. Every tutorial I see, the USB to UART drivers are installed first. But all the tutorials are on V1 or V2. Does my 12e V3 module also needs to be installed with USB to UART drivers?

2. I have a code that i run previously with the esp8266 v1 module. The small arduino compatible chip. It consists of AT commands. If I need to communicate with the new NodeMcu 12e V3 module, how am I to make it accept the AT commands? I want to run the previous code written for the old esp8266 with the new NodeMcu module.

Please help.

- Sat Jul 16, 2016 10:16 pm #50879 NodeMCU is preloaded to work with LUA scripts. It will not respond to "AT" commands unless reprogrammed. You will have to research if anyone has documented this procedure.

The NodeMCU V3 by LoLin requires the CH340 serial-USB drivers for Windows. No drivers are required for Linux. Unknown about OS-X.

When used with the Arduino IDE, the NodeMCU is completely reprogrammed overwriting any previous firmware (AT, LUA, etc.) I have some info on the V3 here.

Ray

- Mon Jul 18, 2016 3:09 am #50958 Why won't by NodeMcu module connect to the wifi once I power it up using the CPU of the PC?

It connects when i power it up using my Laptop.

- Mon Jul 18, 2016 3:14 am #50960 OK. It's done. My bad! I forgot to change the baud rate in the serial monitor!