Project_02-1.ino

//The first project -- S.O.S signal

int ledPin = 10;

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  // 3 quick blinks to represent “S”
  digitalWrite(ledPin,HIGH);
  delay(150);
  digitalWrite(ledPin,LOW);
  delay(100);

  digitalWrite(ledPin,HIGH);
  delay(150);
  digitalWrite(ledPin,LOW);
  delay(100);

  digitalWrite(ledPin,HIGH);
  delay(150);
  digitalWrite(ledPin,LOW);
  delay(100);

  delay(100); //100 milliseconds as a break of each letter

  //3 quick blinks to represent “0”
  digitalWrite(ledPin,HIGH);
  delay(400);
  digitalWrite(ledPin,LOW);
  delay(100);

  digitalWrite(ledPin,HIGH);
  delay(400);
  digitalWrite(ledPin,LOW);
  delay(100);

  digitalWrite(ledPin,HIGH);
  delay(400);
  digitalWrite(ledPin,LOW);
  delay(100);

  delay(100);
  // 100 milliseconds delay between each letter

  //3 quick blinks to represent “S” again
  digitalWrite(ledPin,HIGH);
  delay(150);
  digitalWrite(ledPin,LOW);
  delay(100);

  digitalWrite(ledPin,HIGH);
  delay(150);
  digitalWrite(ledPin,LOW);
  delay(100);

  digitalWrite(ledPin,HIGH);
  delay(150);
  digitalWrite(ledPin,LOW);
  delay(100);

  delay(5000); // wait 5 seconds to repeat the next S.O.S.Sssigignnaal
}