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

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

  // dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second 

  // 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)

  // 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 2 second

  // flash o
  // 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

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

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

  // flash c
  // Dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second 

  // 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)

  // 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 2 second

// flash k
// Dash
digitalWrite(13, HIGH); 
delay(1000); // Wait for 1 second 

 // 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)

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

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

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

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

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

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

   // dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

  // 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 2 second

  // flash 1
  // Dot 
  digitalWrite(13, HIGH);
  delay(350); // Wait for 0.5 second (dot)

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

  // dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

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

  // dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

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

// dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

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

// dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

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

// flash 3
// Dot 
digitalWrite(13, HIGH);
  delay(350); // Wait for 0.5 second (dot)

// 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)

// 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)

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

  // dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

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

// dash
  digitalWrite(13, HIGH);
  delay(1000); // Wait for 1 second

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