#include <Servo.h>
Servo myservo; // create servo obj ect to control a servo 
int potpin = 0; // analog pin used to connect the pushbutton 
int val; // variable to read the v alue from the analog pin 
void setup() {
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}
void loop() {
val = analogRead(potpin); // reads the value of the potentiometer (va lue between 0 and 1023) val = map(val, 0, 1023, 0, 180);
// scale it to use it with the ser o (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
}