#include <Servo.h>

Servo myServo;   
const int analogPin = A0; //joystick
int value = 0;

void setup() {
  pinMode(analogPin, INPUT);
  Serial.begin(9600);
  myServo.attach(9);
}

void loop() {
  //Read in 10-bit analog value (0 to 1023) from joystick
  value = analogRead(analogPin);  
  //value variable will convert to degrees

  //Use map() to convert values to degrees (0 to 180) for Servo motor
  value = map(value, 0, 1023, 0, 180);

  //Use the converted value to move the Servo
  myServo.write(value);   //Move to a position specified by value (0 to 180)
  delay(15);              //Then wait 15ms
}//loop