#include <LiquidCrystal_I2C.h>

#define LCD_ADDR 0x27
#define LCD_COLUMNS 16
#define LCD_ROWS 2

LiquidCrystal_I2C lcd(LCD_ADDR, LCD_COLUMNS, LCD_ROWS);

int led = 13;
int buzzer = 12;
int sensor = 2;
int state = LOW;
int val = 0;


void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
pinMode(buzzer, OUTPUT);
pinMode(sensor, INPUT);

Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  val = digitalRead(sensor);
  if (val == HIGH) {
    digitalWrite(led, HIGH);
    tone(buzzer, 1000, 300);
    //delay(500);
    lcd.begin(16,2);
    lcd.init();
    lcd.backlight();

    lcd.setCursor(5,0);
    lcd.print("MOTION");

    lcd.setCursor(4,5);
    lcd.print("DETECTED!");

    //if (state == LOW) {
      // Serial.println("Motion Detected!");
      //state == HIGH;
    }
  
  else {
    digitalWrite(led, LOW);
    noTone(buzzer);
    //delay(500);
    lcd.begin(16,2);
    lcd.init();
    lcd.backlight();

    lcd.setCursor(7,0);
    lcd.print("NO");

    lcd.setCursor(5,5);
    lcd.print("MOTION");

    //if (state == HIGH) {
      //Serial.println("NO Motion");
      //state == LOW;
    }

}