AL_Stupid Pet Trick

//servo tutorial from https://www.arduino.cc/en/Tutorial/Sweep

#include <Servo.h>

Servo smiley; //servo object
int pos = 0; //store servo position

void setup() {
  smiley.attach(2);
}

void loop() {
  for (pos = 0; pos <= 180; pos += 1) { //0 to 180 degrees
    smiley.write(180);
    delay(5);
  }
  for (pos = 180; pos >= 0; pos -= 1) { //180 to 0 degrees
    smiley.write(0);
    delay(5);
  }

  exit(0); //exit
}