int led1 = D3;
void setup() {
  pinMode(led1, OUTPUT);
  Particle.function("ThreeBlinks", threeBlink);
}


int threeBlink(String a){
    digitalWrite(led1, HIGH);
    delay(1000);
    digitalWrite(led1, LOW);
    delay(1000);
    
    digitalWrite(led1, HIGH);
    delay(1000);
    digitalWrite(led1, LOW);
    delay(1000);

    digitalWrite(led1, HIGH);
    delay(1000);
    digitalWrite(led1, LOW);
    delay(1000);
    return 1;
}