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Practical Python Programming for IoT

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

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Product type Paperback
Published in Nov 2020
Publisher Packt
ISBN-13 9781838982461
Length 516 pages
Edition 1st Edition
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Author (1):
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Gary Smart Gary Smart
Author Profile Icon Gary Smart
Gary Smart
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Table of Contents (20) Chapters Close

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

Creating your first IoT program

We are about to create a Python program to integrate with a service called dweet.io. This is how their website describes the service: "it's like Twitter for social machines."

We will create simple dweets, which are the dweet.io equivalent of a tweet, by pasting a URL into a web browser.

Our program will monitor and receive our dweets by polling a dweet.io RESTful API endpoint for data. As data is received, it will be parsed to find an instruction specifying whether our LED should be turned on or off or made to blink. Based on this instruction, our LED state will be changed using the GPIOZero library. We'll have a look at data format received from dweet.io when we discuss the program's code in a subsequent section titled Understanding the server code.

We're using the free public dweet.io service where all information is publicly accessible, so do not publish any sensitive data. There is...
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