Arduino UNO Wifi Rev4 send data to Firebase

Table of content

1. Setup
   • Firebase console
   • Arduino script
2. Show temperature and humidity values on HTML web page
   • See a realtime web page example

Setup

Firebase console

You'll need to add a new project in Firebase console. Open this url https://console.firebase.google.com/, you use your credentials to login. Add the Realtime Database and change the rules as follow:

{
  "rules": {
    ".read": "true",
    ".write": "auth != null"
  }
}

Click on Public button to publish the new rules.

Add the Hosting service to deploy your web app.

Arduino script

You'll need to creates a file named credentials.h to the arduino script root (/arduino-script), and add the following content:

#define WIFI_SSID <YOUR-WIFI-SSID>
#define WIFI_PASSWORD <YOUR-WIFI-PASSWORD>
#define FIREBASE_AUTH <YOUR-FIREBASE-AUTHENTICATION-CODE>

where:

• <YOUR-WIFI-SSID>, it's the wifi SSID;
• <YOUR-WIFI-PASSWORD>, it's the wifi password;
• <YOUR-FIREBASE-AUTHENTICATION-CODE>, it's the Realtime Database authentication secret. To creates the Realtime Database authentication secret you move to Firebase console > Project settings > Service accounts > Database secret and click on Add secret, you have to copy this secret code.

Show temperature and humidity values on HTML web page

You can read the specific documentation here to correctly setup web app project.

See a realtime web page example

Click here to see a realtime example.