Book Image

Practical Node-RED Programming

By : Taiji Hagino
5 (1)
Book Image

Practical Node-RED Programming

5 (1)
By: Taiji Hagino

Overview of this book

Node-RED is a free and open source flow-based programming tool used to handle IoT data that allows programmers of any level to interconnect physical I/O, cloud-based systems, databases, and APIs to build web applications without code. Practical Node-RED Programming is a comprehensive introduction for anyone looking to get up to speed with the Node-RED ecosystem in no time. Complete with hands-on tutorials, projects, and self-assessment questions, this easy-to-follow guide will help you to become well versed in the foundations of Node-RED. You’ll learn how to use Node-RED to handle IoT data and build web applications without having to write complex code. Once you’ve covered the basics, you’ll explore various visual programming techniques and find out how to make sample flows as you cover web development, IoT development, and cloud service connections, and finally build useful real-world applications. By the end of this book, you’ll have learned how to use Node-RED to develop a real-world application from scratch, which can then be implemented in your business.
Table of Contents (19 chapters)
Section 1: Node-RED Basics
Section 2: Mastering Node-RED
Section 3: Practical Matters

Getting several nodes from the library

You can get several more attractive nodes that have been developed by Node-RED contributors and install them in your Node-RED flow editor. You can find new nodes, share your flows, and see what other people have done with Node-RED. In this section, we will learn how to get several other nodes from the Node-RED library. Let's first access the Node-RED library site: In the following screenshot, you can see how the Node-RED library looks:

Figure 4.13 – Node-RED Library

It's easy to use this library in your own Node-RED environment's flow editor. Let's see how to install a node from the library:

  1. Select Manage palette from the sidebar menu. You will see the User Settings panel open with the Palette tab selected.
  2. Type watson in the search field, or the name of any other node you want to use. If you find the node you want, click the Install button:

    Figure 4.14...