MQ2+Telegram

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>
#include <MQ2.h>


char ssid[] = "Xiaomi12";
char password[] = "123456789";


#define BOTtoken "869799654:AAEmr2yu4IzfCjhwDn642UcB9xgjM0-FeOE"
#define chat_id "683707254"

LiquidCrystal_I2C lcd(0x27, 16,2);
int Analog_Input = A0;
int smoke;
int LED1=D5, LED2=D6, LED3=D7;

MQ2 mq2(Analog_Input);

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();
  mq2.begin();
  digitalWrite(LED1, HIGH);
  lcd.setCursor(0,0);lcd.print("Menghubungkan");
  lcd.setCursor(0,1);lcd.print("ke Jaringan...");
  connectwifi();
  lcd.clear();
  digitalWrite(LED1, LOW);
  digitalWrite(LED3, HIGH);delay(250);
  digitalWrite(LED3, LOW);
  lcd.setCursor(0,0);lcd.print("Terhubung ke");
  lcd.setCursor(0,1);lcd.print("Jaringan Anda");
  delay(2500);lcd.clear();
  bot.sendMessage(chat_id, "Sistem Monitoring Asap sudah Terhubung dengan Telegram Anda.", "");
  lcd.setCursor(0,0);lcd.print("Alat Memulai");
  lcd.setCursor(0,1);lcd.print("Monitoring");
  delay(2500);lcd.clear();
}

void loop() {
  float* values= mq2.read(false);
  smoke = mq2.readSmoke();
  lcd.setCursor(0,0);lcd.print("SMOKE: ");lcd.print(smoke);lcd.print(" PPM");

  if (smoke <=10){
    lcd.setCursor(0,1);lcd.print("STATUS: ");lcd.print("AMAN  ");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    delay(10000);
  }
  else if(smoke <= 100){
    bot.sendMessage(chat_id, "Terdeteksi Asap","");
    bot.sendMessage(chat_id, "Status : Aman", "");
    lcd.setCursor(0,1);lcd.print("STATUS: ");lcd.print("AMAN  ");
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, LOW);
    delay(10000);
  }
  else if(smoke <= 200){
    bot.sendMessage(chat_id, "Terdeteksi Asap","");
    bot.sendMessage(chat_id, "Status : Sedang", "");
    lcd.setCursor(0,1);lcd.print("STATUS: ");lcd.print("SEDANG   ");
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, HIGH);
    digitalWrite(LED3, LOW);
    delay(10000);
  }
  else{
    bot.sendMessage(chat_id, "Terdeteksi Asap","");
    bot.sendMessage(chat_id, "Status : Bahaya", "");
    lcd.setCursor(0,1);lcd.print("STATUS: ");lcd.print("BAHAYA   ");
    digitalWrite(LED1, LOW);
    digitalWrite(LED2, LOW);
    digitalWrite(LED3, HIGH);
    delay(10000);
  }
}