#include <Servo.h>

Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards

int pos = 0;    // variable to store the servo position

void setup() {
  myservo.attach(3);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
}


// #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(3);  // attaches the servo on pin 9 to the servo object
// }

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