door automation with blynk

blynk.c

#define BLYNK_PRINT Serial
#include <blynk.h>

// You should get Auth Token in the Blynk App.
char auth[] = "auth_code_goes_here";

int relayPin = D7;                    // choose the pin for the LED

// blynk function
BLYNK_WRITE(V1)
{
  int pinValue = param.asInt();       // assigning incoming value from pin V1 to a variable

  if(pinValue == 1){
      openDoor();
  } 
}

void openDoor() {    
    // Open Door
    digitalWrite(relayPin, LOW);
    delay(1500);
    digitalWrite(relayPin, HIGH);
    
    Particle.publish("house_door_open"); // Slack web hook to open the door
}

void setup()
{
  delay(5000);                      // Allow board to settle
  Blynk.begin(auth);                // Blynk auth
  pinMode(relayPin, OUTPUT);        // Set relay as output
  digitalWrite(relayPin, HIGH);     // Initialize relay pin as HIGH 
}

void loop()
{
  Blynk.run();
}