#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
#include <DHT.h>

#define PIR_PIN 2
#define SERVO_PIN 9
#define RELAY_PIN 7
#define LED_PIN 13
#define BUTTON_PIN 3
#define DHT_PIN 4
#define TRIGGER_PIN 5
#define ECHO_PIN 6
#define BUZZER_PIN 8

Servo myservo;
DHT dht(DHT_PIN, DHT11);
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Inisialisasi LCD dengan alamat 0x27, 16 kolom dan 2 baris

void setup() {
  pinMode(PIR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  
  lcd.init();  // Inisialisasi LCD
  lcd.backlight();  // Nyalakan backlight LCD
  lcd.setCursor(0, 0);
  lcd.print("IoT Security");
  
  myservo.attach(SERVO_PIN);
  dht.begin();
  
  Serial.begin(9600);
}

void loop() {
  int pirState = digitalRead(PIR_PIN);
  Serial.print("PIR State: ");
  Serial.println(pirState); // Debugging dengan mencetak nilai PIR_PIN ke Serial Monitor
  
  if (pirState == HIGH) {
    digitalWrite(LED_PIN, HIGH); // Nyalakan LED
    lcd.setCursor(0, 1);
    lcd.print("Gerakan Terdeteksi");
    delay(1000);
    digitalWrite(LED_PIN, LOW); // Matikan LED
    lcd.clear();
    
    // Gerakkan servo
    myservo.write(90);
    delay(1000);
    myservo.write(0);
    
    // Aktifkan relay
    digitalWrite(RELAY_PIN, HIGH);
    
    // Bunyikan buzzer
    tone(BUZZER_PIN, 1000, 500);
    delay(500);
    noTone(BUZZER_PIN);
  }
  else {
    digitalWrite(LED_PIN, LOW); // Pastikan LED mati jika tidak ada gerakan
  }
  
  // Baca tombol tekan
  int buttonState = digitalRead(BUTTON_PIN);
  if (buttonState == LOW) {
    lcd.setCursor(0, 0);
    lcd.print("Tombol Ditekan");
    delay(1000);
    lcd.clear();
  }
  
  // Baca suhu dan kelembaban
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  
  lcd.setCursor(0, 0);
  lcd.print("Suhu: ");
  lcd.print(temperature);
  lcd.print(" C");
  lcd.setCursor(0, 1);
  lcd.print("Kelembaban: ");
  lcd.print(humidity);
  lcd.print(" %");
  
  delay(2000);
  lcd.clear();
  
  // Baca jarak dari sensor ultrasonik
  long duration, distance;
  digitalWrite(TRIGGER_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGGER_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGGER_PIN, LOW);
  
  duration = pulseIn(ECHO_PIN, HIGH);
  distance = duration * 0.034 / 2;
  
  lcd.setCursor(0, 0);
  lcd.print("Jarak: ");
  lcd.print(distance);
  lcd.print(" cm");
  
  delay(2000);
  lcd.clear();
}