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

void loop() {
  prog1();
}

void prog1() {
  myservo.write(0);
  delay(500);
  myservo.write(45);
  delay(500);
  myservo.write(90);
  delay(500);
  myservo.write(135);
  delay(500);
  myservo.write(180);
  delay(500);
  myservo.write(135);
  delay(500);
  myservo.write(90);
  delay(500);
  myservo.write(45);
  delay(500);
}

void prog2(){
  for(int i=60; i<=120; i=i+1) {
    myservo.write(i);
    delay(3);
  }
  for(int i=120; i>=60; i=i-1) {
    myservo.write(i);
    delay(3);
  }
}