// C++ code
//
void setup()
{
  //LED
  pinMode(3, OUTPUT); // Change pin to 48 for Barduino
  //BUZZER
  pinMode(6, OUTPUT); //Change pin to 46 for Barduino
}

void loop()
{
  //LED blink and Buzzer sound for "Hello World" in Morse Code
  //The length of a dot is one unit (250 milliseconds)
  //The length of a dash is three units (750 milliseconds)
  //The space between parts of the same letter is one unit (250 milliseconds)
  //The space between letters is three units (750 milliseconds)
  //The space between words is seven units (1750 milliseconds)
  //The space between loops is ten units (2500 milliseconds)
  //The tone is at 500Hz
  
  //H
  //dot dot dot dot
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(750);
  
  //E
  //dot
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(750);
    
  //L
  //dot dash dot dot
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(750);
  
  //L
  //dot dash dot dot
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(750);
  
  //O
  //dash dash dash
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(1750);
  
  //W
  //dot dash dash
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(750);
  
  //O
  //dash dash dash
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(750);
  
  //R
  //dot dash dot
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(750);
  
  //L
  //dot dash dot dot
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(750);
  
  //D
  //dash dot dot
  digitalWrite(3, HIGH);
  tone(6, 500, 750);
  delay(750);
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(250);
  
  digitalWrite(3, HIGH);
  tone(6, 500, 250);
  delay(250); 
  digitalWrite(3, LOW);
  delay(2500);
  
}