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

// Define DHT pin and type
#define DHTPIN 13
#define DHTTYPE DHT22

// Define objects for sensor, LCD, servo, and buzzer
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo myservo;
const int buzzerPin = 8; // Define buzzer pin

// Define LED pin
int led = 2;

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2);
  Serial.println("Monitoring Suhu Ruang");
  Serial.println("By Saiful");
  dht.begin();
  myservo.attach(3);
  pinMode(led, OUTPUT);
  pinMode(buzzerPin, OUTPUT); // Set buzzer pin as output
}

void loop() {
  // Read temperature and humidity
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  delay(100);

  // Display on LCD
  lcd.setCursor(0, 0);
  lcd.println("Suhu:");
  lcd.print(t);
  lcd.println(" C");
  lcd.setCursor(0, 1);
  lcd.println("Lembab:");
  lcd.print(h);
  lcd.println(" %");

  // Display on serial monitor
  Serial.print("Suhu: ");
  Serial.print(t);
  Serial.print(" *C\t");
  Serial.print("Kelembaban: ");
  Serial.print(h);
  Serial.println(" %");

  // Check temperature and control buzzer
  if (t > 40) {
    digitalWrite(led, HIGH); // Turn LED on
    tone(buzzerPin, 1000); // Play buzzer sound at 1000 Hz
    delay(1000); // Buzz for 1 second
    noTone(buzzerPin); // Stop buzzer sound
  } else {
    digitalWrite(led, LOW); // Turn LED off
    noTone(buzzerPin); // Ensure buzzer is off if temperature is below 40°C
  }

  // Servo control logic (unmodified in this example)
  // ... your servo control code here ...

  delay(500); // Delay between readings
}