ESP8266 Community Forum

- Wed Jun 22, 2016 9:56 am #49601 Hello everyone..
My wifi module seems to be broke. I couldn't flash nodemcu firmware.
This is my config flash. I'm using arduino for flashing esp8266-07
Arduino Uno ------------><--------------------------Esp8266-07
RX----------------------------><--------------------------------------TX
TX----------------------------><--------------------------------------RX
GND--------------------------><-----------------------------------GPIO0
GND--------------------------><----------------------------------GPIO15
GND--------------------------><------------------------------------GND
3v-----------------------------><------------------------------------VCC
3v-----------------------------><------------------------------------EN
3v-----------------------------><------------------------------------GPIO2

When i flash the esp8266 with nodemcu, It stuck on : Note:Begin find ESP8266.
And the red led on wifi module dim a little bit and blinking.
Can i 'save' the wifi module? i think buying a new one is not the best option here
Need help everyone..
Thankyou for your kind answers

- Wed Jun 22, 2016 4:04 pm #49624 Anyone?
please..

- Thu Jun 23, 2016 4:47 am #49646 most probably your module is not broken but your method to flash it.
Just buy a decent USB/serial converter (preferably with CP2102) and problem will be solved

- Thu Jun 23, 2016 7:06 am #49653 Thanks for reply shufti..
After some try and error. I finally figured it out.
So the config flash should be like this (if you're using arduino for flashing nodemcu firmware)

Arduino Uno ------------><--------------------------Esp8266-07
RX----------------------------><--------------------------------------RX
TX----------------------------><--------------------------------------TX
GND--------------------------><-----------------------------------GPIO0
GND--------------------------><----------------------------------GPIO15
GND--------------------------><------------------------------------GND
3v-----------------------------><------------------------------------VCC
3v-----------------------------><------------------------------------EN
3v-----------------------------><------------------------------------GPIO2

If it fails too, check your wiring config. It may be wrong or not connected yet.
Anyway thanks for reply.
Cheers