Smart parking

#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
char auth [] = "udPKU7az3qOAOI9WyQPVoWBx89j78Uu2";
char ssid [] = "Aro";
char pswd [] = "sariayoe";

WidgetLED led1(V1);

int sensor1 = D4;

void setup() {
  Serial.begin (9600);

  Blynk.begin (auth,ssid,pswd);
  pinMode (sensor1, INPUT);
  while (Blynk.connect() == false )  {
    Serial.println("tidak terkoeksi");
  }
  

}

void loop() {
  int sensorvall = digitalRead(sensor1);
  delay (50);

  if (sensorvall == 1 )
  {
    led1.on();
  }
  if (sensorvall == 0 )
  {
    led1.off();
  }
  Blynk.run();
}