Source Code/Program: Send Sensor Data to Google Firebase with ESP8266

 Code :

sumber: https://how2electronics.com/send-sensor-data-google-firebase-esp8266/

#include <ESP8266WiFi.h>                

#include <FirebaseArduino.h>      

#include <DHT.h>              

 

#define FIREBASE_HOST "******************.firebaseio.com"      

#define FIREBASE_AUTH "***********************************"            

#define WIFI_SSID "***********"                                  

#define WIFI_PASSWORD "**************"            

 

#define DHTPIN D2                                            // Digital pin connected to DHT11

#define DHTTYPE DHT11                                        // Initialize dht type as DHT 11

DHT dht(DHTPIN, DHTTYPE);                                                    

 

void setup()

{

  Serial.begin(115200);

  dht.begin();                                                  //reads dht sensor data

              

  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);                                  

  Serial.print("Connecting to ");

  Serial.print(WIFI_SSID);

  while (WiFi.status() != WL_CONNECTED) {

    Serial.print(".");

    delay(500);

  }

 

  Serial.println();

  Serial.print("Connected");

  Serial.print("IP Address: ");

  Serial.println(WiFi.localIP());                               //prints local IP address

  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);                 // connect to the firebase

}

 

void loop()

{

  float h = dht.readHumidity();                                 // Read Humidity

  float t = dht.readTemperature();                              // Read temperature

  

  if (isnan(h) || isnan(t))                                     // Checking sensor working

  {                                  

    Serial.println(F("Failed to read from DHT sensor!"));

    return;

  }

  Serial.print("Humidity: ");  

  Serial.print(h);

  String fireHumid = String(h) + String("%");                   //Humidity integer to string conversion

  

  Serial.print("%  Temperature: ");  

  Serial.print(t);  

  Serial.println("°C ");

  String fireTemp = String(t) + String("°C");                  //Temperature integer to string conversion

  delay(5000);

 

  Firebase.pushString("/DHT11/Humidity", fireHumid);            //setup path to send Humidity readings

  Firebase.pushString("/DHT11/Temperature", fireTemp);         //setup path to send Temperature readings

    if (Firebase.failed())

    {

 

      Serial.print("pushing /logs failed:");

      Serial.println(Firebase.error());

      return;

  }

}