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

Installing npm and Node.js for Mac

If you want to use Node-RED on macOS, you must install npm and Node.js via the following website:

You can get the Mac Installer for Node.js directly there.

Access the original Node.js website and download the installer. You can choose either the recommended or latest features version, but for this book, you should use the recommended version:

Figure 2.6 – Choosing a recommended version installer

Click the .pkg file you downloaded to start installing Node.js. It includes the current version of npm. Node-RED is running on the Node.js runtime, so it is needed. Simply click according to the installation wizard, though there are some points in the installation to pay attention to.

You need to accept the End-User License Agreement:

Figure 2.7 – End-User License Agreement window

You can change the installation location. In this book, the default...