#include <Servo.h>

Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards

int pos = 90;    // variable to store the servo position, strat at middle


// Arduino pin numbers
const int SW_pin = 2; // digital pin connected to switch output
const int X_pin = A5; // analog pin connected to X output
const int Y_pin = A4; // analog pin connected to Y output


void setup() {
  // servo setup
  Serial.begin(9600);
  myservo.attach(11);  // attaches the servo on pin 11 to the servo object
  myservo.write(pos); // start at middle position

  // joystick setup
  pinMode(SW_pin, INPUT);
  digitalWrite(SW_pin, HIGH);
  // Serial.begin(9600); 
}


void loop() {
  // put your main code here, to run repeatedly:

  if( analogRead(Y_pin) > 512 && pos < 180) {
    // turning clockwise
    ++pos;
    myservo.write(pos); 
  }
  else if (analogRead(Y_pin) < 512 && pos > 0) {
    // turning counter-clockwise
    --pos;
    myservo.write(pos); 
  }
  

  delay(15); // control the speed of turning 
}