BB8 Entertainment System

/*
 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>

 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
*/

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

int potpin = A0;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin
int pin;
int servo; 

void setup() {
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
Serial.begin(9600);
}

void loop() {
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1015)
  pin = analogRead(potpin);            
  servo = map(val, 0, 1015, 0, 480);     // scale it to use it with the servo (value between 0 and 180)
   
  if(servo>230) {
    val=139 ;
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(1000);                           // waits for the servo to get there
}
if(servo<250) {
    val=125;
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(1000);                           // waits for the servo to get there
}
Serial.print("pin =");
Serial.print(pin);
Serial.print(" ");
Serial.print("servo =");
Serial.print(servo);
Serial.print(" ");
Serial.println(val);
}