Security System : PIR Sensor and MQ-5 Sensor with Blynk App

/*************************************************************

  This sketch shows how to write values to Virtual Pins

  NOTE:
  BlynkTimer provides SimpleTimer functionality:
    http://playground.arduino.cc/Code/SimpleTimer

  App dashboard setup:
    Value Display widget attached to Virtual Pin V5
 *************************************************************/

/* Fill-in information from Blynk Device Info here */
#define BLYNK_TEMPLATE_ID "TMPL69TOeOj5l"
#define BLYNK_TEMPLATE_NAME "BLYNK DHT11"
#define BLYNK_AUTH_TOKEN "xWNHroH_0AaGmlC-Cr-xQ3Sk1aKO-znb"

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#define Gas A0
WidgetLCD lcd(V7);
int treshold = 100;
int sensorValue= 0;


int PIR = 16;
int counter = 0;
int pos = 0;
int JumlahDeteksi = 0;
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "vivo V25e";  // your ssid
char pass[] = "butuhtok";           // your passchar pass[] = "YourPassword";

int gas;
int distance;
int modeAuto = 0;
BlynkTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void getSensordata ()
{
  int sensorValue= analogRead(Gas);
  Serial.println(sensorValue);
  Serial.print("value gas :");

  if(sensorValue>700){
    digitalWrite(21,HIGH);
     Blynk.logEvent("Security_System","Danger Alert! Gas Value are on set point");
     lcd.clear();
     lcd.print(0,0,"Danger Alert!!");
     lcd.print(0,1, "S Value = ");
     lcd.print(10,1, sensorValue);
  }else{
    digitalWrite(21,LOW);
  }
  delay(1000);
  Blynk.virtualWrite(V3, sensorValue);
  }

void myTimerEvent() {
  int distance = digitalRead(PIR);
  Serial.print("sensor :");
  Serial.println(distance);
  if (distance == 1) {
    JumlahDeteksi = 1;
    Serial.print("Jumlah deteksi: ");
    Serial.println(counter);
    digitalWrite(22, 1);
    lcd.clear();
    lcd.print(2,0,"People Enter"); 
     lcd.print(2,1, "Detected");

    
  } else {
     JumlahDeteksi = 0;
    digitalWrite(22, 0);
    Blynk.virtualWrite(V4, counter);
    Blynk.logEvent("Security_System", "People Enter Detected");
 
  }
  delay(2000);
  if (JumlahDeteksi != pos){
    if (JumlahDeteksi == 1){
      counter = counter + 1;
    }
  }
}

void setup() {
  // Debug console
  pinMode(23, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(22, OUTPUT);
  pinMode(PIR, INPUT);
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  // You can also specify server:
  //Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, "blynk.cloud", 80);
  //Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, IPAddress(192,168,1,100), 8080);

  // Setup a function to be called every second
  timer.setInterval(1000L, myTimerEvent);
  timer.setInterval(1000L, getSensordata);
}

  // process received value

void loop() {
  Blynk.run();
  timer.run();  // Initiates BlynkTimer
}