Motor mit Joystick

int x = 0;

void setup() {
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(A0, INPUT);
  Serial.begin(9600);

}

void loop() {
   x = analogRead(A0);

  if (x < 490){
    analogWrite(3, ((x-512)*(-1))/2);
    }
    else{
      analogWrite(3, 0);
    }

   if (x>530){
   analogWrite(5, (x-512)/2);
 }
     else{
      analogWrite(5, 0);
    }
   x=510;
}