#include <Servo.h>
Servo myservo; // create servo object to control a servo
int potpin = 0; //analog pin used to connect the potentiometer
int val; //variabel to read the value from the analog pin
void setup() {
  myservo.attach(9);//attaches the servo on pin 9 to the servo object

}
void loop() {
  // reads the value of the potentiometer (value batween 0 and 1023)
  val = analogRead(potpin);

  // scale it to use it with the servo (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);

  // set the servo position according to the  scaled value
  myservo.write(val);
  delay(15);// waits for the servo  to get there
}