ArmDuino is Embedded System Based PC Game Controller Mobile Application . ArmDuino Application Can Control or Interacts with PC by using
Arduino Leonardo and Wireless Bluetooth Comunication . The Principle of this is That ArmDuino Sends Value to the Bluetooth Module then Arduino
Leonardo Process this Value and Convert it to the Keyboard Instruction, which is Generally Called ASCII Code Because Arduino Leonardo has Keyboard and Mouse
Emulation
Tested Device : Arduino Leonardo (Microcontroller)
Bluetooth Module : HC-05 bluetooth Module, You Can Also use Another Module Like Qunqi,USPRO, Sunkee etc .
You can Make Whole System From this
Link: https://www.instructables.com/id/Android-Arduino-Bluetooth-PC-Game-Controller/