A CASE FOR GIMX

Electronic part: You can find those components(Arduino 32u4 and USB-TTL) on Aliexpress.com and follow this instruction video:https://youtu.be/n6yyRK_sDqI (I'm not the author)
Attention: Here is an Arduino Leonardo(pro micro), not pro mini.

On the TTL side, you may need a file to cut down some extra border.

Take advantage in PUBG gamers~
For more details about GIMX please visit their forum. I mean there is an XML file for PUBG!