// LCD1602 to Arduino Uno connection example
#include "DHT.h"

#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

DHT dht(DHTPIN, DHTTYPE);

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

int buzzerPin = 6;


void setup() {
  lcd.begin(16, 2);
  // you can now interact with the LCD, e.g.:
  lcd.print(F("DHT22 example!"));

  Serial.begin(115200);
  

  dht.begin();
  pinMode(buzzerPin, OUTPUT);

}

void loop() {
    float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

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

  lcd.print(F("Humidity: "));
  lcd.print(humidity);
  lcd.print(F("%  Temperature: "));
  lcd.print(temperature);
  lcd.println(F("°C "));
  delay(2000);

  // Wait a few seconds between measurements.
  if(temperature>40){
      delay(2000);
      tone(buzzerPin, 31);

  }



  // ...
}