Controlling a Servo Motor with Thumb Joystick

1#include <Servo.h>
2#define SERVO_PIN 9
3#define GROUND_JOY_PIN A3             //joystick ground pin will connect to Arduino analog pin A3
4#define   VOUT_JOY_PIN A2              //joystick +5 V pin will connect to Arduino analog   pin A2
5#define XJOY_PIN A1                  //X axis reading from joystick will   go into analog pin A1
6Servo myservo ;
7 
8void setup()
9{
10 Serial.begin(9600);
11   pinMode(VOUT_JOY_PIN, OUTPUT) ;    //pin A3 shall be used as output
12 pinMode(GROUND_JOY_PIN,   OUTPUT) ;  //pin A2 shall be used as output
13 digitalWrite(VOUT_JOY_PIN, HIGH)   ; //set pin A3 to high (+5V)
14 digitalWrite(GROUND_JOY_PIN,LOW) ; //set pin A3   to low (ground)
15 myservo.attach(9);
16}
17 
18void loop()
19{
20 delay(200);                     
21 int joystickXVal = analogRead(XJOY_PIN) ;  //read joystick   input on pin A1
22 Serial.print(joystickXVal);                //print the value   from A1
23 Serial.println(" = input from joystick");  //print "=input from joystick"   next to the value
24 Serial.print((joystickXVal+520)/10);       //print a from   A1 calculated, scaled value
25 Serial.println(" = output to servo");      //print   "=output to servo" next to the value
26 Serial.println() ;
27 myservo.write((joystickXVal+520)/10);       //write the calculated value to the servo  
28}

1#include <Servo.h>
2#define SERVO_PIN 9
3#define GROUND_JOY_PIN A3            //joystick ground pin will connect to Arduino analog pin A3
4#define  VOUT_JOY_PIN A2              //joystick +5 V pin will connect to Arduino analog  pin A2
5#define XJOY_PIN A1                  //X axis reading from joystick will  go into analog pin A1
6Servo myservo ;
7 
8void setup()
9{
10 Serial.begin(9600);
11  pinMode(VOUT_JOY_PIN, OUTPUT) ;    //pin A3 shall be used as output
12 pinMode(GROUND_JOY_PIN,  OUTPUT) ;  //pin A2 shall be used as output
13 digitalWrite(VOUT_JOY_PIN, HIGH)  ; //set pin A3 to high (+5V)
14 digitalWrite(GROUND_JOY_PIN,LOW) ; //set pin A3  to low (ground)
15 myservo.attach(9);
16}
17 
18void loop()
19{
20 delay(200);                    
21 int joystickXVal = analogRead(XJOY_PIN) ;  //read joystick  input on pin A1
22 Serial.print(joystickXVal);                //print the value  from A1
23 Serial.println(" = input from joystick");  //print "=input from joystick"  next to the value
24 Serial.print((joystickXVal+520)/10);       //print a from  A1 calculated, scaled value
25 Serial.println(" = output to servo");      //print  "=output to servo" next to the value
26 Serial.println() ;
27 myservo.write((joystickXVal+520)/10);      //write the calculated value to the servo  
28}