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Raspberry Pi and MQTT Essentials

You're reading from   Raspberry Pi and MQTT Essentials A complete guide to helping you build innovative full-scale prototype projects using Raspberry Pi and MQTT protocol

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Product type Paperback
Published in Sep 2022
Publisher Packt
ISBN-13 9781803244488
Length 272 pages
Edition 1st Edition
Tools
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Author (1):
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Dhairya Parikh Dhairya Parikh
Author Profile Icon Dhairya Parikh
Dhairya Parikh
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Toc

Table of Contents (14) Chapters Close

Preface 1. Part 1:Covering the Basics
2. Chapter 1: Introduction to Raspberry Pi and MQTT FREE CHAPTER 3. Chapter 2: MQTT in Detail 4. Chapter 3: Introduction to ESP Development Boards 5. Chapter 4: Node-RED on Raspberry Pi 6. Part 2: Practical Implementation – Building Two Full-Scale Projects
7. Chapter 5: Major Project 1: IoT Weather Station 8. Chapter 6: Major Project 2: Smart Home Control Relay System 9. Part 3: How to Take Things Further – What Next?
10. Chapter 7: Taking Your MQTT Broker Global 11. Chapter 8: Project Prototype to Product – How? 12. Index 13. Other Books You May Enjoy

Project enhancements

Project enhancement is a crucial part of project development. We always strive to make things better than they already are. This case is no different.

There are several possible enhancements, both on the hardware and software. Let’s walk through some of them:

  1. The first and main hardware enhancement is adding manual feedback to our system. In fact, the PCB supports it.

The current system, as it stands, does not allow the user to use manual switches, and even if we managed to use them, we cannot get their statuses (that is, at any given moment, we can’t see the state of a switch). But the PCB we are using has a special function: it can provide the current state of any connected application (on or off) on particular ESP32 digital pins. Hence, we can get feedback. Please refer to the circuit diagram for the PCB to see how you need to connect the switch wires to the PCB.

The portion on the PCB that helps achieve this is marked in...

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