/**
  Mendeteksi suhu dan kelembaban menggunakan Sensor DHT22
**/

#include "DHT.h"
#include <LiquidCrystal_I2C.h>
#define DHTTYPE DHT22

int DHTPIN = 15;
int buzzer = 5;

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

void setup() {
  Serial.begin(9600);
  dht.begin();
  lcd.init();
  lcd.backlight();
  lcd.begin(16, 2);
  lcd.print("Startup OK!");
  delay(1000);
  lcd.clear();
  pinMode(buzzer, OUTPUT);
}

void loop() { 
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  Serial.print(F("Temperature : "));
  Serial.print(t);
  Serial.print(F("C "));
  Serial.print(" | ");
  Serial.print(F("pH : "));
  Serial.print(h);
  Serial.println("% ");
  delay(1000);

  byte temperature = 0;
  byte humidity = 0;
  lcd.setCursor(0,0);
  lcd.print("Temperature: ");
  lcd.print(round(temperature));
  lcd.print("C ");
  lcd.setCursor(0,1);
  lcd.print("pH: ");
  lcd.print(humidity);
  lcd.print("% ");
  delay(1000);
  String print_temp = "Temp: "; print_temp += String (t); print_temp += " C";
  String print_humd = "pH: ";  print_humd += String(h); print_humd += " %";
  lcd.setCursor(0,0);  lcd.print(print_temp);
  lcd.setCursor(0,1);  lcd.print(print_humd);

  tone(buzzer, 200);
  delay(2000);
  tone(buzzer, 250);
  delay(2000);
  
}