#include <DHT.h>                   // Include DHT library

#define DHTPIN 23                  // Define pin where DHT22 is connected
#define DHTTYPE DHT22              // Define type of DHT sensor

DHT dht(DHTPIN, DHTTYPE);          // Create an instance of the DHT class

void setup() {
    Serial.begin(115200);          // Start serial communication at 115200 baud rate
    dht.begin();                   // Initialize the DHT sensor
}

void loop() {
    delay(2000);                   // Wait for 2 seconds between readings

    float h = dht.readHumidity();  // Read humidity
    float t = dht.readTemperature(); // Read temperature in Celsius

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

    // Print temperature and humidity to the Serial Monitor
    Serial.print("Humidity: ");
    Serial.print(h);
    Serial.print(" %\t");
    Serial.print("Temperature: ");
    Serial.print(t);
    Serial.println(" *C");
}