#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   2
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
int md=digitalRead(13);
int pre=LOW;
void setup() {
 
  // put your setup code here, to run once:
pinMode(13, INPUT);
pinMode(6, OUTPUT);
pinMode(12, OUTPUT);

}
void loop() {
  // put your main code here, to run repeatedly:
md = digitalRead(13);
  lcd.init();
  lcd.backlight();

if(md==HIGH)
{
 
  digitalWrite(12, HIGH);
  tone(6,1000);
lcd.setCursor(1, 1);
lcd.print("Motion detected!");
}
else
{
 lcd.setCursor(0, 1);
  lcd.print(" NO Motion detected!");
  noTone(6);
   digitalWrite(12, LOW);
} 
}