Arduino read humidity and temperature and save in firebase

arduino_firebase.ino

#include <ArduinoJson.h>
#include <ArduinoOTA.h>
#include <Firebase.h>
#include <FirebaseHttpClient.h>
#include <FirebaseArduino.h>
#include <ESP8266WiFi.h>
#include <FirebaseArduino.h>
#include "DHT.h"

#define FIREBASE_HOST "firebase host"
#define FIREBASE_AUTH "firebase auth"
#define WIFI_SSID "wifi name"
#define WIFI_PASSWORD "wifi password"
#define DHTTYPE DHT11

#define DHTPIN 2

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  
  Serial.print("Connecting");
  
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  
  Serial.println();
  Serial.print("Connected: ");
  Serial.println(WiFi.localIP());

  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
}

void loop() {
  Firebase.setFloat("humidity", dht.readHumidity());
  Firebase.setFloat("temperature", dht.readTemperature());
  delay(6000);
}