#include <OneWire.h>           
#include <DallasTemperature.h>  
#include <Wire.h>               
#include <LiquidCrystal_I2C.h>  
#include <Servo.h>              

#define BUZZER_PIN 17
#define DS18B20_PIN 4
#define PIR_PIN 14
#define SERVO_PIN 16

OneWire oneWire(DS18B20_PIN);
DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x27, 16, 2);

Servo servoMotor;

void setup() {

  Serial.begin(115200);

  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(PIR_PIN, INPUT);
  
  sensors.begin();

  lcd.begin();
  lcd.backlight();

  servoMotor.attach(SERVO_PIN);
  servoMotor.write(0);

  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.setCursor(0, 1);
  lcd.print("Status: Ready");
}

void loop() {
  sensors.requestTemperatures();
  float temperatureC = sensors.getTempCByIndex(0);

  lcd.setCursor(6, 0);
  lcd.print(temperatureC);
  lcd.print((char)223);
  lcd.print("C  ");

  int pirStatus = digitalRead(PIR_PIN);

  if (pirStatus == HIGH) {
    lcd.setCursor(8, 1);
    lcd.print("Motion");

    digitalWrite(BUZZER_PIN, HIGH);
    servoMotor.write(90);
    delay(1000);

    digitalWrite(BUZZER_PIN, LOW);
    servoMotor.write(0);
  } else {
    lcd.setCursor(8, 1);
    lcd.print("No     ");
    digitalWrite(BUZZER_PIN, LOW);
  }

  delay(500);
}