// 8 button gamepad, switches on digital pins 2-10 https://www.thingiverse.com/thing:3832172

        #include <Joystick.h>
        // requires https://github.com/MHeironimus/ArduinoJoystickLibrary

        Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,JOYSTICK_TYPE_GAMEPAD,
          9, 0,                  // Button Count, Hat Switch Count
          false, false, false,   // No X, Y, Z Axis
          false, false, false,   // No Rx, Ry, or Rz
          false, false,          // No rudder or throttle
          false, false, false);  // No accelerator, brake, or steering

        void setup() {
          // Initialize Button Pins
          pinMode(2, INPUT_PULLUP);
          pinMode(3, INPUT_PULLUP);
          pinMode(4, INPUT_PULLUP);
          pinMode(5, INPUT_PULLUP);
          pinMode(6, INPUT_PULLUP);
          pinMode(7, INPUT_PULLUP);
          pinMode(8, INPUT_PULLUP);
          pinMode(9, INPUT_PULLUP);
          pinMode(10, INPUT_PULLUP);

          // Initialize Joystick Library
          Joystick.begin();

        }

        // Last state of the buttons
        int lastButtonState[9] = {0,0,0,0,0,0,0,0,0};

        void loop() {

          // Read pin values
          for (int index = 0; index < 9; index++)
          {
            int currentButtonState = !digitalRead(index + 2);
            if (currentButtonState != lastButtonState[index])
            {
              Joystick.setButton(index, currentButtonState);
              lastButtonState[index] = currentButtonState;
            }
          }

          delay(10);
        }