#include <DHT.h>

#define DHTPIN 2 // Pin connected to the DHT22 sensor
#define DHTTYPE DHT22 // DHT22 (AM2302) sensor type

#define TEMP_LED_PIN 4 // Pin for temperature LED
#define HUMIDITY_LED_PIN 5 // Pin for humidity LED

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  
  pinMode(TEMP_LED_PIN, OUTPUT);
  pinMode(HUMIDITY_LED_PIN, OUTPUT);
}

void loop() {
  delay(5000); // Wait for 2 seconds between readings

  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Check temperature conditions
  if (temperature <= 24) {
    digitalWrite(TEMP_LED_PIN, HIGH); // Glow constantly
  } else if (temperature > 24 && temperature <= 30) {
    blinkLED(TEMP_LED_PIN, 500); // Blink every 500 milliseconds
  } else if (temperature > 30 && temperature <= 40) {
    blinkLED(TEMP_LED_PIN, 300); // Blink every 300 milliseconds
  } else if (temperature > 40 && temperature <= 50) {
    blinkLED(TEMP_LED_PIN, 100); // Blink every 100 milliseconds
  }

  // Check humidity conditions
  if (humidity < 50) {
    digitalWrite(HUMIDITY_LED_PIN, HIGH); // Glow constantly
  } else if (humidity >= 50 && humidity < 60) {
    blinkLED(HUMIDITY_LED_PIN, 500); // Blink every 500 milliseconds
  } else if (humidity >= 60 && humidity < 70) {
    blinkLED(HUMIDITY_LED_PIN, 300); // Blink every 300 milliseconds
  } else if (humidity >= 70 && humidity < 80) {
    blinkLED(HUMIDITY_LED_PIN, 100); // Blink every 100 milliseconds
  } else if (humidity >= 80) {
    blinkLED(HUMIDITY_LED_PIN, 50); // Blink every 50 milliseconds
  }
}

void blinkLED(int pin, int duration) {
  digitalWrite(pin, HIGH);
  delay(duration / 2);
  digitalWrite(pin, LOW);
  delay(duration / 2);
}