#include <Servo.h>
Servo myservo; // create servo object to control a servo
int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin

void setup(){
  myservo.attach(11); 
}

void loop(){
  val = analogRead(potpin);
  val = map(val, 0, 1023, 0, 180); 
  myservo.write(val);
  delay(12);
}