int Dit = 300;        // Define Dit length

  int Dah = 900;        // Define Dah length

  int Space = 300;      // Define space between Dit and Dah
  
  int lSpace = 900;     // Define letter space

  int wSpace = 2100;    // Define word space


void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  
  pinMode(LED_BUILTIN, OUTPUT);
 
}

// the loop function runs over and over again forever
void loop() {

  digitalWrite(LED_BUILTIN, HIGH);   // DASH turn the LED on (HIGH is the voltage level)
  delay (Dah);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait
  
  digitalWrite(LED_BUILTIN, HIGH);   // DIT turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // DASH turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(lSpace);                       // wait 
  
   
  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(lSpace);                       // wait

 
  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // Dash turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(lSpace);                       // wait

 
  digitalWrite(LED_BUILTIN, HIGH);   // Dash turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait

  digitalWrite(LED_BUILTIN, HIGH);   // Dash turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // Dash turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(lSpace);                       // wait


  digitalWrite(LED_BUILTIN, HIGH);   // DASH turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // DASH turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(lSpace);                       // wait


   digitalWrite(LED_BUILTIN, HIGH);   // DASH turn the LED on (HIGH is the voltage level)
  delay(Dah);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait 

  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait 
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(Space);                       // wait
  
  digitalWrite(LED_BUILTIN, HIGH);   // Dit turn the LED on (HIGH is the voltage level)
  delay(Dit);                       // wait
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(wSpace);                       // wait 
  
}