Full code scripts for Lesson #3 : Servo motor with Arduino

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#include <Servo.h>
Servo myservo;       // create servo object to control a servo
int pos=0;          // variable to store the servo position

void setup() {

  myservo.attach(3);  // attaches the servo object on pin 3

}

void loop(){

  for(pos=0;pos<=180;pos++){  //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(25);           // waits 25ms for the servo to reach the position
  }

  for(pos=180;pos>=0;pos--){ // goes from 180 degrees to 0 degrees in steps of 1 degree
    myservo.write(pos);  // tell servo to go to position in variable 'pos'
    delay(25);        // waits 25ms for the servo to reach the position
}

}