/*
 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>

class ServoMotor
{
  // Class Member Variables
  // These are initialized at startup
  Servo servo1;
  int speed1;
  unsigned long motor1RunMillis;
 
  // These maintain the current state
  boolean motor1Running;
  unsigned long motor1StartMillis;
  
  // Constructor - creates a Flasher 
  // and initializes the member variables and state
  public:
  ServoMotor(int pin, long rotationSpeed, long duration)
  {
    motor1StartMillis = millis();
    speed1 = rotationSpeed;
    motor1RunMillis = duration;
  }
  
  void Attach(int pin)
  {
    servo1.attach(pin);
  }
  
  void Detach()
  {
    servo1.detach();
  }

  
  void posicion(int pos){
    servo1.write(pos);
  }
};

ServoMotor servo1(5, 500, 2500);
int potpin = 0;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin

void setup()
{
  servo1.Attach(5);

}

void loop() {
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
  servo1.posicion(val);                  // sets the servo position according to the scaled value
  delay(15);                           // waits for the servo to get there
}