// Define the pin for the external light
//#define EXTERNAL_LIGHT_PIN 2 // You can connect your external light to any digital pin

void setup() {
  // Initialize the pin for the external light as an output
  pinMode(13, OUTPUT);
}

void loop() {
// Turn off the external light - delay start
  digitalWrite(13, LOW);
  delay(3500); // Wait for 1 second

  // flash u
  digitalWrite(13, HIGH);
  delay(350); // Wait for 0.5 second (dot dot dash)


  // 2s gap between characters
  digitalWrite(13, LOW);
  delay(2000); // Wait for 1 second

  // flash n
  // Dash
  digitalWrite(13, HIGH);
  delay(1000); // dash dot

  // Turn off the external light - red
  digitalWrite(13, LOW);
  delay(700); // Wait for 1 second

// dash
  digitalWrite(13, HIGH);
  delay(1000); // dash

  // Turn off the external light - red
  digitalWrite(13, LOW);
  delay(700); // Wait for 1 second

// dot
  digitalWrite(13, HIGH);
  delay(350); // Wait for 0.5 second (dot)

  // 2s gap between characters
  digitalWrite(13, LOW);
  delay(2000); // Wait for 1 second

  
  // flash d
  // Dash
  digitalWrite(13, HIGH);
  delay(1000); // dash dot dot

 // flash e
  // Dash
  digitalWrite(13, HIGH);
  delay(1000); // dot

 // flash r
  // Dash
  digitalWrite(13, HIGH);
  delay(1000); // dot dash dot
 
 // flash t
  // Dash
  digitalWrite(13, HIGH);
  delay(1000); // dash
 
  // Turn off the external light - red
  digitalWrite(13, LOW);
  delay(700); // Wait for 1 second

// dash
  digitalWrite(13, HIGH);
  delay(1000); // dash

  // Turn off the external light - red
  digitalWrite(13, LOW);
  delay(700); // Wait for 1 second

// dot
  digitalWrite(13, HIGH);
  delay(350); // Wait for 0.5 second (dot)


}