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

#define DHTPIN 2
#define LEDPIN 5
#define BUZZERPIN 8
#define LDRPIN A0
#define DHTTYPE DHT22

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

void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.backlight();
  dht.begin();
  pinMode(BUZZERPIN, OUTPUT);
  pinMode(LEDPIN, OUTPUT);

  lcd.setCursor(0,0);
  lcd.print("Praktikum Embedded System");
  lcd.setCursor(0,1);
  lcd.print("Lab Teknik Digital");
  int positionCounter;
  for (positionCounter = 0; positionCounter < 24; positionCounter++) {
    lcd.scrollDisplayLeft();
    delay(300);
  }
  lcd.clear();
}

void loop() {
  // put your main code here, to run repeatedly:
  if (millis() > 10000) {
    int ldrValue = analogRead(LDRPIN);
    float temp = dht.readTemperature();
    float hum = dht.readHumidity();

    lcd.setCursor(0,0);
    lcd.print("T:");
    lcd.print(temp);
    lcd.print((char)223);
    lcd.print("C");
    lcd.setCursor(0,1);
    lcd.print("H:");
    lcd.print(hum);
    lcd.print("%");

    if (temp > 40) {
      tone(BUZZERPIN, 2000);
    } else {
      noTone(BUZZERPIN);
    }

    analogWrite(LEDPIN, ldrValue - 8);
  }
  delay(1000);
}