#include <DHT.h>;
#include <Adafruit_GFX.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <Fonts/FreeSerif9pt7b.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);
#define led_merah 11
#define led_kuning 12
#define led_hijau 13
#define led_biru 6
#define buzzer 7
#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

int h;
int t;


void setup()
{
  Serial.begin(9600);
  Serial.println("Temperature and Humidity Sensor Test");
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode(buzzer, OUTPUT);
  pinMode(led_merah, OUTPUT);
  pinMode(led_kuning, OUTPUT);
  pinMode(led_hijau, OUTPUT);
  pinMode(led_biru, OUTPUT);

}

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

  if (isnan (h) || isnan (t) || isnan (f)) {
    return;
  }


  float hif = dht.computeHeatIndex(f, h);
  float hic = dht.computeHeatIndex(t, h, false);


  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %, Temp: ");
  Serial.print(t);
  Serial.println(" ° Celsius");

  lcd.setCursor(1, 0);
  lcd.println(" SUHU & KELEMBAPAN ");


  if (h <= 44 and h >= 0) {
    digitalWrite(led_biru, LOW);
    lcd.println("KELEMBAPAN KURANG");
  }

  else if (h <= 65 and h >= 45) {
    digitalWrite(led_biru, HIGH);
    lcd.println("KELEMBAPAN CUKUP");
  }

  else if (h <= 100 and h >= 66) {
    digitalWrite(led_biru, LOW);
    lcd.println("KELEMBAPAN LEBIH");
  }


  if (t <= 25 and t >= 15) {
    digitalWrite(led_merah, LOW);
    digitalWrite(led_kuning, LOW);
    digitalWrite(led_hijau, HIGH);
    lcd.setCursor(3, 1);
    lcd.print("T :");
    lcd.print(t);
    lcd.println("^C");
    lcd.print("H :");
    lcd.print(h);
    lcd.println("%");
    lcd.println("");
    lcd.print("SUHU KURANG  ");
    tone(buzzer, 500);
  }

  else if (t <= 32 and t >= 26) {
    digitalWrite(led_merah, LOW);
    digitalWrite(led_kuning, HIGH);
    digitalWrite(led_hijau, LOW);
    lcd.setCursor(3, 1);
    lcd.print("T :");
    lcd.print(t);
    lcd.println("^C");
    lcd.print("H :");
    lcd.print(h);
    lcd.println("%");
    lcd.println("");
    lcd.print("SUHU CUKUP  ");
    tone(buzzer, 1000);

  }
  else if (t <= 40 and t >= 33) {
    digitalWrite(led_merah, HIGH);
    digitalWrite(led_kuning, LOW);
    digitalWrite(led_hijau, LOW);
    lcd.setCursor(3, 1);
    lcd.print("T :");
    lcd.print(t);
    lcd.println("^C");
    lcd.print("H :");
    lcd.print(h);
    lcd.println("%");
    lcd.println("");
    lcd.print("SUHU LEBIH  ");
    tone(buzzer, 1500);

  }

  else {
    digitalWrite(led_merah, HIGH);
    digitalWrite(led_kuning, HIGH);
    digitalWrite(led_hijau, HIGH);
    lcd.setCursor(3, 1);
    lcd.print("T :");
    lcd.print(t);
    lcd.println("^C");
    lcd.print("H :");
    lcd.print(h);
    lcd.println("%");
    lcd.println("");
    lcd.print("SUHU INVALID  ");
    tone(buzzer, 2000);
  }

  delay(2000);

}