#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHTPIN 8
#define DHTTYPE DHT22
DHT dht (DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd (0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
 pinMode(7,OUTPUT);
 pinMode(6,OUTPUT);
 pinMode(5,OUTPUT);
 pinMode(4,OUTPUT);
 Serial.begin(115200);
 Serial.println("SISTEM KONTROL SUHU");
 lcd.begin(16, 2);
 dht.begin();
}

void loop() {
  // put your main code here, to run repeatedly:
  float t = dht.readTemperature();
  float h = dht.readHumidity();
  delay(1000);
  //menampilkan di 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 di serial monitor
  Serial.println("suhu = ");
  Serial.print(t);
  Serial.println(" c");
  Serial.println("Kelembaban=");
  Serial.print(h);
  Serial.println(" %");

 

   if (t < 20) {
    digitalWrite(4, HIGH); // Nyalakan heater
    digitalWrite(7, LOW);    // Matikan fan 1
    digitalWrite(6, LOW);    // Matikan fan 2
    digitalWrite(5, LOW);    // Matikan fan 3
  } else if (t <= 25){
    digitalWrite(4, LOW);  // Matikan heater
    digitalWrite(7, HIGH);   // Nyalakan fan 1
    digitalWrite(6, LOW);    // Matikan fan 2
    digitalWrite(5, LOW);    // Matikan fan 3
  } else if (t <= 30){
    digitalWrite(4, LOW);  // Matikan heater
    digitalWrite(7, HIGH);   // Nyalakan fan 1
    digitalWrite(6, HIGH);    // NYALAKAN fan 2
    digitalWrite(5, LOW);    // Matikan fan 3
  } else {
    digitalWrite(4,LOW);//MATIKAN HEATER
     digitalWrite(7, HIGH);   // Nyalakan fan 1
    digitalWrite(6, HIGH);    //  NYALAKAN fan 2
    digitalWrite(5, HIGH);    // NYALAKAN fan 3
  }
   // Menentukan berapa banyak LED yang menyala
  int ledsOn =0;
  if (digitalRead(7) == HIGH) {
    ledsOn++;
 
  if (digitalRead(6) == HIGH) {
    ledsOn++;
  }
  if (digitalRead(5) == HIGH) {
    ledsOn++;
  }

  // Perubahan suhu berdasarkan jumlah LED yang menyala
  if (ledsOn == 1) {
   t++;
     // suhu turun 1 derajat per menit
  } else if (ledsOn == 2) {
    t++; // suhu turun 2 derajat per menit
  } else if (ledsOn == 3) {
    t++; // suhu naik 3 derajat per menit
  }

}}