int pin_num = 2;
int pin2_num = 3;
int pin3_num = 4;
int pin4_num = 5; 
int pin5_num = 6; 

void setup() {

pinMode(pin_num, OUTPUT);
pinMode(pin2_num, OUTPUT);
pinMode(pin3_num, OUTPUT);
pinMode(pin4_num, OUTPUT);
pinMode(pin5_num, OUTPUT);

}

void loop() {
  //Todo el circuito se cierra en el GND
  //Se añaden resistencias (resistencia: capacidad de un dispositivo de oponerse al paso de la corriente)
  //En los led, el posotivo es la pata larga y el negativo la corta

//Los leds se encienden y se apagan de derecha a izquierda
digitalWrite(pin_num, HIGH);
delay(100);
digitalWrite(pin_num, LOW);
delay(100);

digitalWrite(pin2_num, HIGH);
delay(100);
digitalWrite(pin2_num, LOW);
delay(100);

digitalWrite(pin3_num, HIGH);
delay(100);
digitalWrite(pin3_num, LOW);
delay(100);

digitalWrite(pin4_num, HIGH);
delay(100);
digitalWrite(pin4_num, LOW);
delay(100);

digitalWrite(pin5_num, HIGH);
delay(100);
digitalWrite(pin5_num, LOW);
delay(300);

//Los leds parpadean 3 veces
digitalWrite(pin_num, HIGH);
digitalWrite(pin2_num, HIGH);
digitalWrite(pin3_num, HIGH);
digitalWrite(pin4_num, HIGH);
digitalWrite(pin5_num, HIGH);

delay(200);

digitalWrite(pin_num, LOW);
digitalWrite(pin2_num, LOW);
digitalWrite(pin3_num, LOW);
digitalWrite(pin4_num, LOW);
digitalWrite(pin5_num, LOW);

delay(200);

digitalWrite(pin_num, HIGH);
digitalWrite(pin2_num, HIGH);
digitalWrite(pin3_num, HIGH);
digitalWrite(pin4_num, HIGH);
digitalWrite(pin5_num, HIGH);

delay(200);

digitalWrite(pin_num, LOW);
digitalWrite(pin2_num, LOW);
digitalWrite(pin3_num, LOW);
digitalWrite(pin4_num, LOW);
digitalWrite(pin5_num, LOW);

delay(200);

digitalWrite(pin_num, HIGH);
digitalWrite(pin2_num, HIGH);
digitalWrite(pin3_num, HIGH);
digitalWrite(pin4_num, HIGH);
digitalWrite(pin5_num, HIGH);

delay(200);

digitalWrite(pin_num, LOW);
digitalWrite(pin2_num, LOW);
digitalWrite(pin3_num, LOW);
digitalWrite(pin4_num, LOW);
digitalWrite(pin5_num, LOW);

delay(300);

//Los leds se encienden y se apagan de izquierda a derecha

digitalWrite(pin5_num, HIGH);
delay(100);
digitalWrite(pin5_num, LOW);
delay(100);

digitalWrite(pin4_num, HIGH);
delay(100);
digitalWrite(pin4_num, LOW);
delay(100);

digitalWrite(pin3_num, HIGH);
delay(100);
digitalWrite(pin3_num, LOW);
delay(100);

digitalWrite(pin2_num, HIGH);
delay(100);
digitalWrite(pin2_num, LOW);
delay(100);

digitalWrite(pin_num, HIGH);
delay(100);
digitalWrite(pin_num, LOW);
delay(300);

}