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

View More author details

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

Subscribing and visualizing data on the cloud-side Node-RED

In this section, we will see how to visualize the received data with Node-RED on the cloud side. This uses one of the dashboard nodes as we learned in Chapter 6, Implementing Node-RED in the Cloud, but this time, we'll choose Gauge's UI to make it look a little better.

The cloud-side Node-RED used this time runs on the IBM Cloud (PaaS), but CloudMQTT, which created the service as an MQTT broker earlier, is a cloud service that differs from the IBM Cloud.

In this chapter, we will learn that an MQTT broker exists so that it can be accessed from various places, and that both publishers (data distributors) and subscribers (data receivers) can use it without being aware of where it is.

Preparing Node-RED on the IBM Cloud

Now, let's create a Node-RED flow connected to CloudMQTT by performing the following steps. Here, we will use Node-RED on the IBM Cloud. Please note that it is not Node-RED on the Raspberry...