* What is this?
This is a simple recipe for turning your Arduino into a usable
joystick/gamepad.

I am using [[https://robotdyn.com/joystick-shield-for-arduino.html][RobotDyn Joystick shield]] which makes the whole process
trivial.

* Compiling
Install the dependencies:

- [[https://github.com/sudar/Arduino-Makefile][Arduino Makefile]] (available as arduino-mk in Ubuntu/Debiab)
- [[https://github.com/MHeironimus/ArduinoJoystickLibrary][Arduino Joystick Library]]

Tweak ~joystick.ino~ to suit your needs. In particular, enable or
disable using the Y axis as additional buttons.

Then just run ~make~ and ~make upload~ to flash the board.

** Y axis as buttons
Using the Y axis on the joystick as additional buttons is useful for
playing e.g. SuperTuxKart, where you only need the joystick for
steering.

* Wiring
There is nothing to wire -- just pop the shield onto your board and
plug it in!

* Debugging
You can use the ~jstest~ tool on Linux.