#include "DHT.h"
#define DHTPIN 12     // Pin DHT22
#define DHTTYPE DHT22   // DHT 22 (AM2302), AM2321
int redLight = 6;
int yellowLight = 5;
int greenLight = 4;
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  Serial.println("=== Selamat Mencoba DHT 22 ===");
  Serial.println("=== System Embedded ===");
  Serial.println("=== By Rudi Hidayat, S.Pd., MT ===");
  dht.begin();
  pinMode(redLight, OUTPUT); 
  pinMode(yellowLight, OUTPUT); 
  pinMode(greenLight, OUTPUT);
}

void loop() {
  delay(1000);  // Tunggu 1 detik untuk pembacaan selanjutnya
  float h = dht.readHumidity(); // Baca kelembapan
  float t = dht.readTemperature(); // Baca suhu dalam Celsius

   // Logika untuk menyalakan LED berdasarkan suhu
  if (t < 25) {  // Jika suhu kurang dari 25°C
    digitalWrite(greenLight, HIGH); 
    digitalWrite(redLight, LOW); 
    digitalWrite(yellowLight, LOW);
  } else if (t >= 25 && t <= 35) {  // Jika suhu antara 25°C - 35°C
    digitalWrite(yellowLight, HIGH);
    digitalWrite(greenLight, LOW);
    digitalWrite(redLight, LOW);
  } else if (t > 35) {  // Jika suhu lebih dari 35°C
    digitalWrite(redLight, HIGH); 
    digitalWrite(yellowLight, LOW); 
    digitalWrite(greenLight, LOW);
  }

  // Menampilkan hasil pembacaan suhu dan kelembapan ke serial monitor
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" *C\t");
  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.println(" %");
}