#include <LiquidCrystal.h> 
LiquidCrystal lcd(8,7,6,5,4,3);  //(RS,E,D4,D5,D6,D7)
int relayPin = 12;                                           
int inputPin = 2;                                        
int pirState = LOW;                              
int val = 0;
int buzzer = 11;
void setup() 
{
  pinMode(relayPin, OUTPUT); 
  pinMode(buzzer, OUTPUT);
  pinMode(inputPin, INPUT);               
  lcd.begin(16, 2);
}
void loop()
{
  val = digitalRead(inputPin);
  if (val == HIGH) 
  {
    lcd.setCursor(0,0);
    lcd.println("Ada pergerakan!");
    digitalWrite(relayPin, HIGH);
    tone(buzzer,3000,500);
    delay(200);
    digitalWrite(relayPin, LOW);
    noTone(buzzer);
    delay(200);
  } 
  else 
  {
    lcd.setCursor(0,0);
    lcd.println("Tidak ada gerakan");
    digitalWrite(relayPin, LOW);
    noTone(buzzer);
    delay(30);   
  }
}