Lukman Penghitung Pengunjung

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>

#define counter_pin D9
#define buttonReset D8
bool item_detected = false;
bool rs_detected = true;
int  item_counter = 0;
int statusReset = 0;

char ssid[] = "Mi A1";
char password[] = "11223344";

#define BOTtoken "857476788:AAHYWAq9KSkCZWeurL0DXaoX9AF-w3OZrak"
#define chat_id "876561354"

LiquidCrystal_I2C lcd(0x27, 16,2);

WiFiClientSecure client;
UniversalTelegramBot bot(BOTtoken, client);

void connectwifi(){
  Serial.begin(115200);

  WiFi.mode(WIFI_STA);
  WiFi.disconnect();
  delay(100);

  Serial.print("Connecting Wifi: ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}

void setup() {
  Serial.begin(115200);
  lcd.begin();lcd.backlight();
  pinMode( counter_pin , INPUT);
  pinMode( buttonReset , INPUT);
  lcd.setCursor(0,0);lcd.print("Menghubungkan");
  lcd.setCursor(0,1);lcd.print("ke Jaringan...");
  connectwifi();
  lcd.clear();
  lcd.setCursor(0,0);lcd.print("Terhubung ke");
  lcd.setCursor(0,1);lcd.print("Jaringan Anda");
  delay(2500);lcd.clear();
  bot.sendMessage(chat_id, "Sudah Terhubung", "");
  lcd.setCursor(0, 0);lcd.print("Selamat Datang");
  lcd.setCursor(0, 1);lcd.print("Di BP3TKI");delay(2000);
  lcd.clear();lcd.setCursor(0, 0);lcd.print("Ready");
  delay(2000);
}

void loop() {
  updateCounter();delay(250);
  int statusReset = digitalRead(buttonReset);
  if( (rs_detected == true) && ( statusReset == 1 )){
        rs_detected = false;
        item_counter = 0;
        lcd.clear();lcd.setCursor(2,0);lcd.print("Penghitung");
        lcd.setCursor(4,1);lcd.print("Direset");delay(2000);
        updateCounter();
        bot.sendMessage(chat_id, "Penghitung Pengunjung Direset", "");
        String cek = "Jumlah Pengunjung : ";
               cek += item_counter;
               cek += " orang.";
               bot.sendMessage(chat_id, cek, "");
        delay(50);
  }

  else if( (rs_detected == false) && ( statusReset == 0 )){
        rs_detected = true;
  }

  int val = digitalRead( counter_pin );
  if( (item_detected == false) && ( val == 0 )){
        item_detected = true;
        item_counter++;
        updateCounter();
        String cek = "Jumlah Pengunjung : ";
               cek += item_counter;
               cek += " orang.";
               bot.sendMessage(chat_id, cek, "");
        delay(250);
  }

  else if( (item_detected == true) && ( val == 1 )){
        item_detected = false;

  }
}

void updateCounter(){
     lcd.clear();lcd.setCursor(0,0);lcd.print("Pengunjung Masuk");
     lcd.setCursor(7,1);lcd.print(item_counter);
     Serial.println(item_counter);
}