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You're reading from Practical Python Programming for IoT Build advanced IoT projects using a Raspberry Pi 4, MQTT, RESTful APIs, WebSockets, and Python 3

Product type Paperback

Published in Nov 2020

Publisher Packt

ISBN-13 9781838982461

Length 516 pages

Edition 1st Edition

Languages

Python

Tools

MQTT

Concepts

IoT Development

Author (1):

Gary Smart

View More author details

Table of Contents (20) Chapters

Preface

1. Section 1: Programming with Python and the Raspberry Pi

2. Setting Up your Development Environment FREE CHAPTER

3. Getting Started with Python and IoT

4. Networking with RESTful APIs and Web Sockets Using Flask

5. Networking with MQTT, Python, and the Mosquitto MQTT Broker

6. Section 2: Practical Electronics for Interacting with the Physical World

7. Connecting Your Raspberry Pi to the Physical World

8. Electronics 101 for the Software Engineer

9. Section 3: IoT Playground - Practical Examples to Interact with the Physical World

10. Turning Things On and Off

11. Lights, Indicators, and Displaying Information

12. Measuring Temperature, Humidity, and Light Levels

13. Movement with Servos, Motors, and Steppers

14. Measuring Distance and Detecting Movement

15. Advanced IoT Programming Concepts - Threads, AsyncIO, and Event Loops

16. IoT Visualization and Automation Platforms

17. Tying It All Together - An IoT Christmas Tree

18. Assessments

19. Other Books You May Enjoy

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Adding a RESTful API client web page

The web page we are about to discuss is the one you interacted with previously to change the brightness of your LED when you visited http://localhost:5000 in your web browser. A screenshot of the web page is shown in Figure 3.1.

As we proceed through this section, we will be learning how to build this basic web page using HTML and JavaScript. We will discover how to make the HTML range component interact with the Flask-RESTful API server that we created in the previous section, so that when we change the range control (that is, slide the slider), our LED's brightness also changes.

You will find the page's code in the chapter03/templates/index_api_client.html file. Please review this file before proceeding to get an overall idea about what it contains.

The templates folder is a special Flask folder where template files are kept. An HTML page is considered a template in the Flask ecosystem. You will also find a...

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Authors (1)

Gary Smart

Gary Smart is a senior software engineer and an IoT and integration expert. The commencement of Gary's IT career coincided with the birth of the World Wide Web and has grown in line with the internet and emerging technologies ever since, including the rise of mobile phones and tablets, embedded technologies, SaaS and business migration to the cloud, and in recent years, the IoT revolution. Gary's practical experience includes both technical and management positions and experience in both small and large organizations, including Hewlett-Packard, Deakin University, and Pacific Hydro-Tango, boutique consulting firms, and innovative internet and IoT start-ups.

See other products by Gary Smart