Book Image

Hands-On Internet of Things with MQTT

By : Tim Pulver
Book Image

Hands-On Internet of Things with MQTT

By: Tim Pulver

Overview of this book

MQ Telemetry Transport (MQTT) is a lightweight messaging protocol for smart devices that can be used to build exciting, highly scalable Internet of Things (IoT) projects. This book will get you started with a quick introduction to the concepts of IoT and MQTT and explain how the latter can help you build your own internet-connected prototypes. As you advance, you’ll gain insights into how microcontrollers communicate, and you'll get to grips with the different messaging protocols and techniques involved. Once you are well-versed with the essential concepts, you’ll be able to put what you’ve learned into practice by building three projects from scratch, including an automatic pet food dispenser and a smart e-ink to-do display. You’ll also discover how to present your own prototypes professionally. In addition to this, you'll learn how to use technologies from third-party web service providers, along with other rapid prototyping technologies, such as laser cutting, 3D printing, and PCB production. By the end of this book, you’ll have gained hands-on experience in using MQTT to build your own IoT prototypes.
Table of Contents (16 chapters)
Title Page

Simplifying the e-paper example

In order to create a code base we can work with, which only includes the code we really need, we have to get rid of the following:

  • Code for different microcontrollers: As we are working with the Arduino MKR WiFi 1010, we don't need code that runs on every possible microcontroller.
  • Code to display images on the e-paper display: We only want to display text. If you want to add image functionality on your own later on, you can re-integrate the bits and pieces to make it work.
  • Code for fast refreshes: There are different ways to refresh the display. We don't update the display very often and can, therefore, use the slower but simpler method.

Deleting code from an existing example (or reading about it) is probably not the most exciting thing to do, but bear with me. Being able to combine existing examples and modify them to your needs...