#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
void setup (){
  lcd.begin(16,2);
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Gas leak monitor");
  lcd.setCursor(0,1);
  lcd.print("project :Team ");
  delay(4000);
  lcd.clear();
}

void loop () {
  int value 
  value = digitalRead("MQ2:");
  lcd.setCursor(0,0);
  lcd.print("MQ2:");
  lcd.setCursor(4,0);
if(value==0)
{lcd.setCursor(0,1);
lcd.print ("Smoke_detected");
}
else{
  lcd.setCursor(0,1);
  lcd.print ("No_smoke_safe!");
}



}