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CJMCU-3212

CJMCU-3212

Description

Guide to flash ESP8266 in CJMCU-3212.

For the guide we are going to use https://github.com/spacehuhn/wifi_ducky

Resources used

https://github.com/spacehuhn/wifi_ducky

https://github.com/espressif/esptool

1: Put the CJMCU as ESP programmer

The first thing to do is put the arduino as a programmer, so, in Arduino put

Tools-> Board-> Arduino Leonardo

Tools-> Port -> (the corresponding port)

And upload this sketch

2: Upload the sketch on the ESP

download the 4m binary from here

Now, the Magic (or the solution that worked for me):

Disconnect the CJMCU.

Bridge the two metal circles on the top right before connect the CJMCU to the USB. (image)

Once connected, run in esptool:

python esptool.py --trace --before no_reset --baud 115200 --port /dev/ttyACM0 write_flash 0x00000 ../esp8266_wifi_duck.ino.generic.bin --flash_size 4MB --flash_mode dio --flash_freq 40m

Now, disconnect the bridge.

3: Upload the wifi ducky sketch

Now, upload https://github.com/spacehuhn/wifi_ducky/blob/master/arduino_wifi_duck/arduino_wifi_duck.ino

Ready, wifi_ducky is working =)

I hope this solution works for you, any problem ask me

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How load sketch in ESP8266 in CJMCU-3212

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