#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);
  }
}