---

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

void loop() {
  // Первая вспышка
  digitalWrite(LED_BUILTIN, HIGH); 
  delay(300);
  digitalWrite(LED_BUILTIN, LOW);  
  delay(300);
  
  // Вторая вспышка
  digitalWrite(LED_BUILTIN, HIGH); 
  delay(300);
  digitalWrite(LED_BUILTIN, LOW);  
  delay(2000);
}