nodemcu : Wifi module not found // How to fix

[espruino-discuss]

Posted at 2017-09-07 by Antoine

Hi guys as it was a bit dificult to find a straightforward solution I just write a quick recap on how to fix de issue.

Board : NodeMcu ESP8266 ESP-12E CP2102

computer : Mac OS Sierre 10.12.6

Error that I got "Wifi module not found" and impossible to comunicate with the board.

How I fixed it :

I reflashed the board with this settings :

files are from the folder /espruino_1v94/espruino_1v94_esp8266

esptool.py --port /dev/cu.SLAB_USBtoUART --baud 115200 write_flash --flash_freq 40m --flash_mode dio --flash_size 4MB 0x00000 "boot_v1.6.bin" 0x1000 espruino_esp8266_user1.bin 0x3FC000 esp_init_data_default.bin 0x37E000 blank.bin

NB : You maybe have to change the port /dev/cu.SLAB_USBtoUART

Have a nice day and enjoy

PS : I wrote this topic with more "SEO" keyword to be sure this will be more visible, and to help more people :)

[gfwilliams]

Posted at 2017-09-08 by @gfwilliams

Great - thanks for posting up your solution!

The Wifi module not found happens because the IDE can't communicate with the board, so isn't aware that it is in fact an ESP8266 that has Wifi already.