#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define DHTPIN 2          // Pin where your DHT sensor is connected.
#define DHTTYPE DHT22     // Type of DHT sensor.

DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 16, 2);

const float TEMPERATURE_THRESHOLD = 25.0; // in Celsius
const float HUMIDITY_THRESHOLD = 60.0; // in percentage


void setup() {
 Wire.begin();  // Initialize the I2C communication for the LCD
dht.begin();


lcd.init();       // Initialize the LCD
  lcd.backlight();  // Turn on the backlight
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");;



}
void loop() {

  delay(5000); // Delay for 2 seconds to prevent rapid readings


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

 if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read data from DHT sensor!");
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Sensor Error");
    return;
  }

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperature, 1);  // Display temperature with one decimal place
  lcd.print(" ");
  lcd.write(0xDF);  // Display the degree symbol
  lcd.print("C");

  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");
  lcd.print(humidity, 1);  // Display humidity with one decimal place
  lcd.print(" %");
  delay(5000);

  
// Check if temperature or humidity exceeds the thresholds
if (temperature > TEMPERATURE_THRESHOLD) {
lcd.setCursor(0, 0);
lcd.print("Temp HIGH! ");
// Add code here to trigger alarms or notifications
}
if (humidity > HUMIDITY_THRESHOLD) {
lcd.setCursor(0, 1);
lcd.print("Humidity HIGH!");
// Add code here to trigger alarms or notifications
}
delay(2000); // Delay for 2 seconds before taking the next reading
}