#define DASH 750 //duration of a "-"
#define DOT 250 //duration of a "."
#define DSPACE 250 //duration of the space between each DASH or DOT
#define LSPACE 500 //duration of the space between the end a letter
const int buzzer = 9;


void setup(){  
  pinMode(buzzer, OUTPUT);
}

void dash(){
  tone(buzzer, 1000);
  delay(DASH);
  noTone(buzzer);
  delay(DSPACE);
}

void dot(){
  tone(buzzer, 1000);
  delay(DOT);
  noTone(buzzer);
  delay(DSPACE);
}

void morse_0(){
  dash();
  dash();
  dash();
  dash();
  dash();
  delay(LSPACE);
}
void morse_1(){
  dot();
  dash();
  dash();
  dash();
  dash();
  delay(LSPACE);
}

void morse_2(){
  dot();
  dot();
  dash();
  dash();
  dash();
  delay(LSPACE);
}

void morse_3(){
  dot();
  dot();
  dot();
  dash();
  dash();
  delay(LSPACE);
}

void morse_4(){
  dot();
  dot();
  dot();
  dot();
  dash();
  delay(LSPACE);
}

void morse_5(){
  dot();
  dot();
  dot();
  dot();
  dot();
  delay(LSPACE);
}

void morse_6(){
  dash();
  dot();
  dot();
  dot();
  dot();
  delay(LSPACE);
}

void morse_7(){
  dash();
  dash();
  dot();
  dot();
  dot();
  delay(LSPACE);
}

void morse_8(){
  dash();
  dash();
  dash();
  dot();
  dot();
  delay(LSPACE);
}

void morse_9(){
  dash();
  dash();
  dash();
  dash();
  dot();
  delay(LSPACE);
}

void  loop(){
  morse_0();
  morse_1();
  morse_2();
  morse_3();
  morse_4();
  morse_5();
  morse_6();
  morse_7();
  morse_8();
  morse_9();
}