SOS blink lon pin 8

Arduino_SOS

#define LED 8
#define dot_duration 250
#define dash_duration dot_duration * 3
#define pause_duration dot_duration
#define letter_pause dot_duration * 3
#define word_pause dot_duration * 7

void setup() {
  pinMode(LED, OUTPUT);
  Serial.begin(9600);
}

// the loop function runs over and over again forever
void loop() {
  // S
  blink_for_time(dot_duration);
  blink_for_time(dot_duration);
  blink_for_time(dot_duration);
  pause_for_time(letter_pause - dot_duration);
  // O
  blink_for_time(dash_duration);
  blink_for_time(dash_duration);
  blink_for_time(dash_duration);
  pause_for_time(letter_pause - dot_duration);
  // S
  blink_for_time(dot_duration);
  blink_for_time(dot_duration);
  blink_for_time(dot_duration);
  pause_for_time(word_pause - dot_duration);
}

void blink_for_time(int milliseconds){
  digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(milliseconds);                       // wait for a second
  digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
  delay(pause_duration);                       // wait for a second
}

void pause_for_time(int milliseconds){                     // wait for a second
  digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW
  delay(milliseconds);                       // wait for a second
}