const int irLedPin = 3; 

String message = "3-5"; 

void setup() {
  pinMode(irLedPin, OUTPUT);
  Serial.begin(9600);
  Serial.println("Transmitter Active Sending: 3-5");
}


void flash(int duration) {
  digitalWrite(irLedPin, HIGH);
  delay(duration);
  digitalWrite(irLedPin, LOW);
  delay(200); 
}

void transmitMorse(char c) {
  String code = "";

  if (c == '3') code = "...--";
  else if (c == '5') code = ".....";
  else if (c == '-') code = "-....-"; 

  Serial.print("Sending: ");
  Serial.println(c);

  for (int j = 0; j < code.length(); j++) {
    if (code[j] == '.') flash(200);  
    else if (code[j] == '-') flash(600); 
  }
  delay(1000); 
}

void loop() {
  for (int i = 0; i < message.length(); i++) {
    transmitMorse(message[i]);
  }
  delay(5000); 
}