controller.c

#include "Joystick.h"

 //              https://github.com/MHeironimus/ArduinoJoystickLibrary


Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,
  JOYSTICK_TYPE_GAMEPAD, 0, 0, // first no. is how many button there are
  false , false, false, false, false, false,
  true, true, false, false, false);

int throttle = A0; 
int rudder = A1;
int throttleValue = 0;
int rudderValue = 0;

int prevrudValue = 0;
int prevthroValue = 0;
int sens = 5;

// init joystick libary
void setup() {
  Joystick.begin();

}

void loop() {
  throttleValue = analogRead(throttle);
  rudderValue = analogRead(rudder);

  if (abs(throttleValue - prevthroValue) > sens) {
  Joystick.setThrottle(throttleValue);
  prevthroValue = throttleValue;
  }
  
  if (abs(rudderValue - prevrudValue) > sens) {
  Joystick.setRudder(rudderValue);
  prevrudValue = rudderValue;
  }
  delay(1);
 
}