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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Summary
In this chapter, we analyzed the requirements for controlling a drone with MQTT messages. We defined the topics that we will use and the commands that will be part of the messages' payloads to control a drone. Then, we worked with the Paho Python Client to write Python code that connected an MQTT client to the MQTT server.
We understood the methods we needed to call for the Paho Python Client and their parameters. We analyzed how callback worked and we were able to publish messages to topics, subscribe to topic filters, and receive and process messages.
We wrote code that processed commands for a drone with Python. The code is able to run on different IoT platforms, including Intel Joule boards and Raspberry Pi 3, and also on any computer ...
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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.