#include <DHT.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

DHT dht(2, DHT22); // Create a DHT object
#define tPIN 13      // Pin connected to temperature LED
#define hPIN 12      // Pin connected to temperature LED

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.print("Temperature &");
  lcd.setCursor (8,1);
  lcd.print("Humidity");
  delay(2000);
  lcd.clear();

  Serial.begin(9600);       // Start serial communication
  dht.begin();              // Initialize DHT sensor
  pinMode(tPIN, OUTPUT);  // Set LED pin as output
  pinMode(hPIN, OUTPUT);  // Set LED pin as output

 
}

void loop() {
  float temperature = dht.readTemperature(); // Read temperature in Celsius
  float humidity = dht.readHumidity();

  
    // 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;
  }

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print("%  Temperature: ");
  Serial.print(temperature);
  Serial.println("°C ");


  if (temperature > 30) { 
    digitalWrite(tPIN, HIGH);  // Turn LED on
    delay(500);                 // Keep LED on for 0.5 seconds
    digitalWrite(tPIN, LOW);   // Turn LED off
    delay(500);                 // Keep LED off for 0.5 seconds
  } else {
    digitalWrite(tPIN, LOW);   // Keep LED off if temperature <= 30
  }


   if (humidity > 50) { 
    digitalWrite(hPIN, HIGH);  // Turn LED on
    delay(500);                 // Keep LED on for 0.5 seconds
    digitalWrite(hPIN, LOW);   // Turn LED off
    delay(500);                 // Keep LED off for 0.5 seconds
  } else {
    digitalWrite(hPIN, LOW);   // Keep LED off if temperature <= 30

  }

  delay(2000); // Wait before reading temperature again
}