const int BUTTON_PIN = D0;
const int LED_PIN = D1;
bool wasPressed = false;

void setup() {
    pinMode(BUTTON_PIN, INPUT);
    pinMode(LED_PIN, OUTPUT);
}

void loop() {
    
    bool pressed = digitalRead(BUTTON_PIN);
    if (pressed && !wasPressed)
    {
        Spark.publish("launch");
        digitalWrite(LED_PIN, HIGH);
        delay(250);
        digitalWrite(LED_PIN, LOW);
        delay(250);
        digitalWrite(LED_PIN, HIGH);
        delay(250);
        digitalWrite(LED_PIN, LOW);
        delay(250);        
    }
    
    wasPressed = pressed;
    delay(250);
}