April 2017
Intermediate to advanced
280 pages
6h 18m
English
Content preview from MQTT Essentials - A Lightweight IoT ProtocolBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 5. Controlling Home Automation in JavaScript
In this chapter, we will write JavaScript code to control home automation with MQTT messages. We will write code that will be able to run on web browsers. In addition, we will use Node.js to write code that runs on IoT boards, receives MQTT messages and controls devices wired to the boards. We will:
- Understand the requirements to control home automation with MQTT and WebSockets
- Define the topics and commands to control home automation
- Enable WebSockets for a Mosquitto server
- Understand the Eclipse Paho JavaScript asynchronous client
- Create an HTML 5 web page to control LEDs
- Publish messages to target remote devices in JavaScript
- Process the received messages in JavaScript
- Work with WebSockets to connect ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.