void setup() {

  // put your setup code here, to run once:

  DDRD = 0xFF;      //Configura todos los pines del puerto D como salidas

}


void loop() {
  // Primer recorrido del pendulo
  PORTD = 128;           delay(500); //Led 1
  PORTD = 64;            delay(20);  //Led 2
  PORTD = 0b00100000;    delay(20);  //Led 3
  PORTD = 0x10;          delay(20);  //Led 4
  PORTD = 0x08;          delay(20);  //Led 5
  PORTD = 0b00000100;    delay(20);  //Led 6
  PORTD = 2;             delay(20);  //Led 7
  PORTD = 0b00000001;    delay(500); //Led 8
  // segundo recorrido del pendulo
  PORTD = 2;             delay(20);
  PORTD = 4;             delay(20);
  PORTD = 0x08;          delay(20);
  PORTD = 0b00010000;    delay(20);
  PORTD = 32;            delay(20);
  PORTD = 0b01000000;    delay(20);
}