You're reading from Practical Node-RED Programming Learn powerful visual programming techniques and best practices for the web and IoT

Product type Paperback

Published in Mar 2021

Publisher Packt

ISBN-13 9781800201590

Length 326 pages

Edition 1st Edition

Languages

JavaScript

Tools

Node-Red

Concepts

Server Side Web Development

Author (1):

Taiji Hagino

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Table of Contents (19) Chapters

Preface

1. Section 1: Node-RED Basics

2. Chapter 1: Introducing Node-RED and Flow-Based Programming FREE CHAPTER

3. Chapter 2: Setting Up the Development Environment

4. Chapter 3: Understanding Node-RED Characteristics by Creating Basic Flows

5. Chapter 4: Learning the Major Nodes

6. Section 2: Mastering Node-RED

7. Chapter 5: Implementing Node-RED Locally

8. Chapter 6: Implementing Node-RED in the Cloud

9. Chapter 7: Calling a Web API from Node-RED

10. Chapter 8: Using the Project Feature with Git

11. Section 3: Practical Matters

12. Chapter 9: Creating a ToDo Application with Node-RED

13. Chapter 10: Handling Sensor Data on the Raspberry Pi

14. Chapter 11: Visualize Data by Creating a Server-Side Application in the IBM Cloud

15. Chapter 12: Developing a Chatbot Application Using Slack and IBM Watson

16. Chapter 13: Creating and Publishing Your Own Node on the Node-RED Library

17. Other Books You May Enjoy

Appendix: Node-RED User Community

Preparing a public MQTT broker service

Recall the previous chapter, Chapter 10, Handling Sensor Data on the Raspberry Pi. We sent the data of the temperature/humidity sensor, which was connected to the edge device (Raspberry Pi), to the cloud and confirmed that the data could be observed on the cloud side.

In the previous chapter, we checked how to operate an MQTT broker using a service called Mosquitto. This was in order to focus on sending data from edge devices to an MQTT broker.

However, this was a mechanism where everything was done locally on the Raspberry Pi. Essentially, when trying to implement an IoT mechanism, MQTT brokers should be in a public location and accessible from anywhere via the internet.

It is possible to host your own Mosquitto MQTT broker in the public cloud, but that adds some extra complexity in terms of setting up and maintaining it. There are a number of public MQTT services available that can make it easier to get started.

In this chapter...