int led = 13; 


void setup() {

 pinMode(led,OUTPUT);

}

void loop() {

 //S seran 3 puntos 

for(int i=0 ; i<3; i++  ) {
  digitalWrite(led, HIGH); 
  delay(200);
  digitalWrite(led, LOW); 
  delay(50);
  
 
}
//LETRA O 
delay (150);

for(int i = 0 ; i < 3; i++){
  
  digitalWrite(led, HIGH); 
  delay(400);
   digitalWrite(led, LOW); 
  delay(200);
  
  }

 //LETRA S 
 delay (150);
 
for(int i=0 ; i<3; i++  ) {
  digitalWrite(led, HIGH); 
  delay(200);
  digitalWrite(led, LOW); 
  delay(50);
  
 
}
delay (1000);

}