ardunio-led.c

int led = 12;

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

// the loop routine runs over and over again forever:
void loop() {
  
  for(int i = 0; i < 3; i++) {
    digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(200);
    digitalWrite(led, LOW);
    delay(200);
  }
  

  for(int i = 0; i < 12; i++) {
    digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
    delay(25);
    digitalWrite(led, LOW);
    delay(25);
  }
}