Practical Python Programming for IoT

Build advanced IoT projects using a Raspberry Pi 4, MQTT, RESTful APIs, WebSockets, and Python 3

Gary Smart 지음

Packt(GCO Science) 2020년 11월 12일 출간

작품소개

책소개

Leverage Python and Raspberry Pi to create complex IoT applications capable of creating and detecting movement and measuring distance, light, and a host of other environmental conditions

▶Book Description
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.

▶What You Will Learn
？Understand electronic interfacing with Raspberry Pi from scratch
？Gain knowledge of building sensor and actuator electronic circuits
？Structure your code in Python using Async IO, pub/sub models, and more
？Automate real-world IoT projects using sensor and actuator integration
？Integrate electronics with ThingSpeak and IFTTT to enable automation
？Build and use RESTful APIs, WebSockets, and MQTT with sensors and actuators
？Set up a Raspberry Pi and Python development environment for IoT projects

▶Key Features
？Learn the fundamentals of electronics and how to integrate them with a Raspberry Pi
？Understand how to build RESTful APIs, WebSocket APIs, and MQTT-based applications
？Explore alternative approaches to structuring IoT applications with Python

▶Who This Book Is For
This IoT Python book is for application developers, IoT professionals, or anyone interested in building IoT applications using the Python programming language. It will also be particularly helpful for mid to senior-level software engineers who are experienced in desktop, web, and mobile development, but have little to no experience of electronics, physical computing, and IoT.

목차

▶TABLE of CONTENTS
▷ Section 1: Programming with Python and the Raspberry Pi
？Chapter 1: Setting Up your Development Environment
？Chapter 2: Getting Started with Python and IoT
？Chapter 3: Networking with RESTful APIs and Web Sockets Using Flask
？Chapter 4: Networking with MQTT, Python, and the Mosquitto MQTT Broker

▷ Section 2: Practical Electronics for Interacting with the Physical World
？Chapter 5: Connecting Your Raspberry Pi to the Physical World
？Chapter 6: Electronics 101 for the Software Engineer

▷ Section 3: IoT Playground - Practical Examples to Interact with the Physical World
？Chapter 7: Turning Things On and Off
？Chapter 8: Lights, Indicators, and Displaying Information
？Chapter 9: Measuring Temperature, Humidity, and Light Levels
？Chapter 10: Movement with Servos, Motors, and Steppers
？Chapter 11: Measuring Distance and Detecting Movement
？Chapter 12: Advanced IoT Programming Concepts - Threads, AsyncIO, and Event Loops
？Chapter 13: IoT Visualization and Automation Platforms
？Chapter 14: Tying It All Together - An IoT Christmas Tree

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▶What this book covers
？ Chapter 1, Setting Up Your Development Environment, explores the Python ecosystem in the context of the Raspberry Pi OS and teaches you how to correctly set up a Python development project for success. You will also learn alternative ways of starting Python programs and how to configure your Raspberry Pi for GPIO interfacing.

？ Chapter 2, Getting Started with Python and IoT, teaches you the basics of electronics and GPIO interfacing with Python. You will build and experiment with simple electronic circuits that are controlled using Python, and combine this learning to build a simple yet complete internet-controllable IoT application from the ground up using the dweet.io platform.

？ Chapter 3, Networking with RESTful APIs and Web Sockets Using Flask, explores how to build network servers in Python using two approaches ？ RESTful APIs and Web Sockets. You will learn how to use these servers in conjunction with Python and an HTML/JavaScript user interface to control electronic circuits over a network from a web browser.

？ Chapter 4, Networking with MQTT, Python, and the Mosquitto MQTT Broker, teaches networking approaches using Message Queue Telemetry Transport, a popular choice for distributed IoT applications. You will learn how to use MQTT in conjunction with Python and an HTML/JavaScript user interface to control electronic circuits over a network and from a web browser.

？ Chapter 5, Connecting Your Raspberry Pi to the Physical World, explores different Pythonbased software options and techniques used to interface and control electronics using a Raspberry Pi's GPIO pins. You will also build and learn to use an ADS1115 analog-todigital converter module to expand your Raspberry Pi's native interfacing options, and be introduced to Pulse Width Modulation (PWM), an important electronic and interfacing concept that you'll be using in later chapters.

？ Chapter 6, Electronics 101 for the Software Engineer, teaches you core electronic concepts and fundamentals. You will learn the essential how and why behind common electronic and interfacing circuits and how they are used practically to correctly and safely interface sensors and actuators to your Raspberry Pi. You will also learn the differences between digital and analog electronics and how each applies to and influences interfacing circuit requirements. Many of the fundamentals you learn about in this chapter are seen applied practically in subsequent chapters as we work with different electronic components and modules.

？ Chapter 7, Turning Things On and Off, teaches you how to use optocouplers, MOSFET transistors, and relays to turn other circuits on and off using your Raspberry Pi and Python. You will also learn about circuit loads, how they are measured, and how this influences the choice and use of optocouplers, MOSFET transistors, and relays in circuits.

？ Chapter 8, Lights, Indicators, and Displaying Information, teaches you how to use an APA102 LED lighting strip, RGB LEDs, OLED displays, and buzzers in conjunction with Python to create visual and auditable orientated circuits and applications.

？ Chapter 9, Measuring Temperature, Humidity, and Light Levels, teaches you how to measure common environmental attributes with your Raspberry Pi and Python. You will build a circuit using a DHT11/22 temperature and humidity sensor and learn about and use Light-Dependent-Resistors (LDRs) to detect the presence or absence of light. In this chapter, you will also deepen your practical understanding and experience of analog electronics, and apply the basic principle to build a moisture detection circuit and application.
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▶ Preface
Welcome to Practical Python Programming for IoT. The focus of this book is centered around Raspberry Pis, electronics, computer networking, the Python programming language, and how we combine all these elements to build complex and multifaceted IoT projects.

We will be looking at these elements from many angles, comparing and contrasting different options, and discussing the how and why behind the electronic circuits we build. By the time you reach the end of this book, you will have a broad toolkit comprised of electronic interfacing code examples, networking code examples, and electronic circuit examples that you can borrow from, adapt, and reengineer for your own needs and projects.

I look forward to joining you on this IoT journey.

작가정보

저자(글) 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.