// Library yang digunakan
#include <LiquidCrystal_I2C.h>
#include <Servo.h>
#include "DHT.h"

// deklarasi pin
#define DHTPIN 13 // DHT PIN 13
#define DHTTYPE DHT22 // DHT22 (AM2302), AM2321
#define BUZZER_PIN 8 // Buzzer connected to digital pin 8
int led = 2;

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
Servo myservo;


void setup() {

  Serial.begin(9600);
  lcd.begin(16, 2);
  Serial.println("Sistem Monitoring Suhu dan Kelembaban"); // menampilkan sistem monitoring suhu dan kelembapan di serial
  dht.begin();
  myservo.attach(3);
  pinMode(led, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  // inisialisasi suhu dan kelembaban
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  delay(1000);

  //menampilkan 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(" % ");

  //menampilkan serial
  Serial.print("Suhu: ");
  Serial.print(t);
  Serial.print(" *c\t");
  Serial.print("Kelembaban: ");
  Serial.print(h);
  Serial.print(" %");

  if (t > 20){
    digitalWrite(led, LOW);
    delay(50);
    noTone(BUZZER_PIN); // matikan bunyi buzzer
    myservo.write(0); 
    delay(50);

  }else{
    digitalWrite(led, HIGH);
    myservo.write(135); // putar servo ke kanan 135 derajat
    tone(BUZZER_PIN, 1000); // nyalakan bunyi buzzer
    myservo.write(180); //putar servo ke kanan 180 derajat
    delay(1000);
    noTone(BUZZER_PIN); // matikan bunyi buzzer
  }
}