#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0x27,16,2);
#define MQ2 3
#define RLED 4
#define GLED 5
#define BUZ 6
#define PIR 2
int value;

void setup() {
// put your setup code here, to run once:
lcd.begin(16,2);
lcd.backlight ();
lcd.setCursor (0,0);
lcd.print("GAS LEAK MONITOR");
lcd.setCursor(0,1);
lcd.print("PROJECT:TEAM D" );
delay(4000);
lcd.clear ();
pinMode(MQ2, INPUT);
pinMode(RLED, OUTPUT);
pinMode(GLED, OUTPUT);
pinMode(BUZ, OUTPUT);
pinMode(PIR, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  
  value=digitalRead(MQ2);
  lcd.setCursor (0,0);
  lcd.print("MQ2:");
  lcd.setCursor (4,0);
  lcd.print(value);
  delay(2000);

  if (value==0)
  {
    lcd.setCursor (0,1);
    lcd.print("MOTION_DETECTED!");
    digitalWrite(RLED, HIGH);
    digitalWrite(BUZ, HIGH);

  }
  else
  {
    lcd.setCursor (0,1);
    lcd.print("NO_MOTION_SAFE!");
    digitalWrite(GLED, HIGH);
    digitalWrite(BUZ, LOW);
  }
}