#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16,2);
int led = 2;
int buzzer = 4;
int pir = 3;

void setup() {
  pinMode(2,OUTPUT);
  pinMode(3, INPUT);
  pinMode(4, OUTPUT);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  Serial.begin(9600);
  // put your setup code here, to run once:

}

void loop() {
  int val= digitalRead(pir);
  Serial.print(val);
  if(val == 1){
    digitalWrite(buzzer, HIGH);
    digitalWrite(led, HIGH);
    lcd.setCursor(1,0);
    lcd.print("  DANGER  ");
  }
  else{
    digitalWrite(buzzer, LOW);
    digitalWrite(led, LOW);
    lcd.setCursor(0,0);
    lcd.print(" NO DANGER");
  }
  // put your main code here, to run repeatedly:

}