#define buzz 12
#include <LiquidCrystal_I2C.h> 

LiquidCrystal_I2C lcd (0x27,20,4);

int ledPin = 13;
int inputPin = 15;
int pirState = LOW;
int val = 0;


void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(inputPin, INPUT);
  pinMode(buzz, OUTPUT);
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("");
  lcd.setCursor(0,1);
  lcd.print("");
}

void loop() {
  val = digitalRead(inputPin);
  if (val == HIGH) {
    digitalWrite(ledPin, HIGH);
    if (pirState == LOW); {
     Serial.println("Gerakan Terdeteksi");
     pirState = HIGH;
    }
    tone(buzz, 1000);
    lcd.init();
    lcd.backlight();
    lcd.setCursor(0,0);
    lcd.print("Gerakan");
    lcd.setCursor(0,1);
    lcd.print("Terdeteksi");
  } else {
    digitalWrite(ledPin, LOW);
    if (pirState == HIGH) {
     Serial.println("Tidak Ada Gerakan");
     pirState = LOW;
    }
    noTone(buzz);
    lcd.init();
    lcd.backlight();
    lcd.setCursor(0,0);
    lcd.print("Gerakan");
    lcd.setCursor(0,1);
    lcd.print("Tidak ada");
  }
}