Arduino Leonardo/Micro As Game Controller/Joystick : 10 Steps - Instructables
Using joystick in a game - Programming Questions - Arduino Forum
Make an Arcade Controller using an Arduino Leonardo or Micro - Tutorial - YouTube
Microchip Makes - With its 22 buttons, joystick and encoder, the KeyBoh shield turns your Arduino Leonardo into a customizable USB keyboard: https://bit.ly/39rTcXf | Facebook
Zerk Zone - Arduino Leonardo Custom Joystick
How to Emulate an Xbox Controller with Arduino (XInput) - Parts Not Included