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

Creating a Watson Assistant API

This hands-on tutorial uses IBM's Watson Assistant API as the engine for chatbots. Watson Assistant can use natural language analysis to interpret the intent and purpose of natural conversation and return an appropriate answer.

Details about Watson Assistant can be found at the following URL:

To use the Watson Assistant API, you need to create an instance of the Watson Assistant API on IBM Cloud. Follow these steps to create it:

  1. Log in to your IBM Cloud dashboard, and search Assistant in the Catalog. Click the Assistant tile on the results of your search:

    Figure 12.10 – Search for Watson Assistant

  2. Create a Watson Assistant API service. Select a region for the Watson Assistant service data center. Dallas is stable so here we selected Dallas.
  3. Select Lite for the pricing plan. Other items such as service name and resource group can be left at their default values.
  4. Click...