#include <DHT.h>

#define DHTPIN 2      // Pin where the DHT sensor is connected to
#define DHTTYPE DHT22 // Change to DHT11 if you're using that sensor

const int tempRedLedPin = 13;    // Pin for the temperature red LED
const int tempYellowLedPin = 12; // Pin for the temperature yellow LED
const int tempGreenLedPin = 14;  // Pin for the temperature green LED

const int humidityRedLedPin = 17;    // Pin for the humidity red LED
const int humidityYellowLedPin = 16; // Pin for the humidity yellow LED
const int humidityGreenLedPin = 15;  // Pin for the humidity green LED

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  dht.begin();

  pinMode(tempRedLedPin, OUTPUT);
  pinMode(tempYellowLedPin, OUTPUT);
  pinMode(tempGreenLedPin, OUTPUT);

  pinMode(humidityRedLedPin, OUTPUT);
  pinMode(humidityYellowLedPin, OUTPUT);
  pinMode(humidityGreenLedPin, OUTPUT);
}

void loop() {
  delay(2000); // Wait for 2 seconds between measurements

  float temperature = dht.readTemperature(); // Read temperature in degrees Celsius
  float humidity = dht.readHumidity();       // Read humidity

  // Check if any reads failed and exit early (to try again).
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Print temperature and humidity readings to the Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C\tHumidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  // Determine the LED color based on temperature range
  if (temperature >= 30.0) {
    // High temperature (Red LED)
    digitalWrite(tempRedLedPin, HIGH);
    digitalWrite(tempYellowLedPin, LOW);
    digitalWrite(tempGreenLedPin, LOW);
  } else if (temperature >= 20.0 && temperature < 30.0) {
    // Moderate temperature (Yellow LED)
    digitalWrite(tempRedLedPin, LOW);
    digitalWrite(tempYellowLedPin, HIGH);
    digitalWrite(tempGreenLedPin, LOW);
  } else {
    // Low temperature (Green LED)
    digitalWrite(tempRedLedPin, LOW);
    digitalWrite(tempYellowLedPin, LOW);
    digitalWrite(tempGreenLedPin, HIGH);
  }

  // Determine the LED color based on humidity range
  if (humidity >= 70.0) {
    // High humidity (Red LED)
    digitalWrite(humidityRedLedPin, HIGH);
    digitalWrite(humidityYellowLedPin, LOW);
    digitalWrite(humidityGreenLedPin, LOW);
  } else if (humidity >= 50.0 && humidity < 70.0) {
    // Moderate humidity (Yellow LED)
    digitalWrite(humidityRedLedPin, LOW);
    digitalWrite(humidityYellowLedPin, HIGH);
    digitalWrite(humidityGreenLedPin, LOW);
  } else {
    // Low humidity (Green LED)
    digitalWrite(humidityRedLedPin, LOW);
    digitalWrite(humidityYellowLedPin, LOW);
    digitalWrite(humidityGreenLedPin, HIGH);
  }
}