React Native and Expo.io based Home Energy Monitor App

Building a React Native App with Expo for our Home Energy Monitor Project.

Published in

HiMinds

2 min readJan 26, 2019

It is all about the power

The Single-Phase Voltage in Sweden is 230 V and the Three-Phase Voltage is 400 V. The Frequency is 50 Hz. Our React Native app works both in iOS and Android, it displays the current power consumption on the three different phases i.e. L1, L2 and L3.

This app is a template app that we use in our himinds-iot-project.

Technology stack:

prerequisites:

We use Firebase database and authentication in the App. You need to create an account; follow this tutorial: Add Firebase to your JavaScript Project

You need to copy your web setup to the APIKey.js file.

<script src="https://www.gstatic.com/firebasejs/5.5.6/firebase.js"></script>
<script>
  // Initialize Firebase
  // TODO: Replace with your project's customized code snippet
  var config = {
    apiKey: "<API_KEY>",
    authDomain: "<PROJECT_ID>.firebaseapp.com",
    databaseURL: "https://<DATABASE_NAME>.firebaseio.com",
    projectId: "<PROJECT_ID>",
    storageBucket: "<BUCKET>.appspot.com",
    messagingSenderId: "<SENDER_ID>",
  };
  firebase.initializeApp(config);
</script>

Install expo-cli: