Book Image

Practical Python Programming for IoT

By : Gary Smart
Book Image

Practical Python Programming for IoT

By: Gary Smart

Overview of this book

The age of connected devices is here, be it fitness bands or smart homes. It's now more important than ever to understand how hardware components interact with the internet to collect and analyze user data. The Internet of Things (IoT), combined with the popular open source language Python, can be used to build powerful and intelligent IoT systems with intuitive interfaces. This book consists of three parts, with the first focusing on the "Internet" component of IoT. You'll get to grips with end-to-end IoT app development to control an LED over the internet, before learning how to build RESTful APIs, WebSocket APIs, and MQTT services in Python. The second part delves into the fundamentals behind electronics and GPIO interfacing. As you progress to the last part, you'll focus on the "Things" aspect of IoT, where you will learn how to connect and control a range of electronic sensors and actuators using Python. You'll also explore a variety of topics, such as motor control, ultrasonic sensors, and temperature measurement. Finally, you'll get up to speed with advanced IoT programming techniques in Python, integrate with IoT visualization and automation platforms, and build a comprehensive IoT project. By the end of this book, you'll be well-versed with IoT development and have the knowledge you need to build sophisticated IoT systems using Python.
Table of Contents (20 chapters)
1
Section 1: Programming with Python and the Raspberry Pi
6
Section 2: Practical Electronics for Interacting with the Physical World
9
Section 3: IoT Playground - Practical Examples to Interact with the Physical World

Running the examples

This chapter comes with four different versions of code that can work with the circuit shown previously in Figure 12.1. You will find the code in the chapter12 folder organized by version:

  • chapter12/version1_eventloop is an event-loop-based example.
  • chapter12/version2_thread is a thread and callback-based example.
  • chapter12/version3_pubsub is a publisher-subscriber-based example.
  • chapter12/version4_asyncio is an Asynchronous IO (AsyncIO)-based example.

All versions are functionally equivalent; however, they differ in their code structure and design. We will discuss each version in greater detail after we test our circuit.

Here are the steps to follow to run each version (starting with version 1) and test the circuit:

  1. Change to the version1_eventloop folder.
  2. Briefly look over the main.py source file, and any additional Python files in the folder, to get a feel for what they contain and how the program is structured.
  3. Run...