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

LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht(19, DHT22);
int ledPin = 2;  
int buzzerPin = 5;  

float tempThreshold = 30.0;  
float humThreshold = 60.0;   

void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  dht.begin();
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  delay(2000);
  float temp = dht.readTemperature();
  float hum = dht.readHumidity();
  lcd.setCursor(0, 0);
  lcd.print("Temperature: ");
  lcd.print(temp);
  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");
  lcd.print(hum);
  Serial.print("Temperature: ");
  Serial.println(temp);
  Serial.print("Humidity: ");
  Serial.println(hum);
  if (temp > tempThreshold) {
    digitalWrite(ledPin, HIGH);  
  } else {
    digitalWrite(ledPin, LOW);   
  }
  if (hum > humThreshold) {
    digitalWrite(buzzerPin, HIGH);  
  } else {
    digitalWrite(buzzerPin, LOW);   
  }
}