This Module can be used for making a Virtual keyboard or Hacking   it has wifi functionality!!

for more info watch this video about another version

this video is a tutorial to show you how flash and install wifi ducky on your cjmcu 3212 and get wifi ducky working.

First sketch to upload:

Downloading NodeMCU Flasher for Windows

After wiring your circuit, you have to download the NodeMCU flasher. It’s a .exe file that you can download using one of the following links:

• Win32 Windows Flasher
• Win64 Windows Flasher

the Bin file :

https://github.com/spacehuhn/wifi_ducky

Remove the shunt then replug the key and using arduino reupload this sketch

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