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Developing IoT Projects with ESP32

Developing IoT Projects with ESP32

By : Vedat Ozan Oner
4.3 (11)
Buy this Book
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Developing IoT Projects with ESP32

Developing IoT Projects with ESP32

4.3 (11)
By: Vedat Ozan Oner
Buy this Book

Overview of this book

Developing IoT Projects with ESP32 provides end-to-end coverage of secure data communication techniques from sensors to cloud platforms that will help you to develop production-grade IoT solutions by using the ESP32 SoC. You'll learn how to employ ESP32 in your IoT projects by interfacing with different sensors and actuators using different types of serial protocols. This book will show you how some projects require immediate output for end-users, and cover different display technologies as well as examples of driving different types of displays. The book features a dedicated chapter on cybersecurity packed with hands-on examples. As you progress, you'll get to grips with BLE technologies and BLE mesh networking and work on a complete smart home project where all nodes communicate over a BLE mesh. Later chapters will show you how IoT requires cloud connectivity most of the time and remote access to smart devices. You'll also see how cloud platforms and third-party integrations enable endless possibilities for your end-users, such as insights with big data analytics and predictive maintenance to minimize costs. By the end of this book, you'll have developed the skills you need to start using ESP32 in your next wireless IoT project and meet the project's requirements by building effective, efficient, and secure solutions.
Table of Contents (17 chapters)
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Preface
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Preface
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Who this book is for
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What this book covers
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To get the most out of this book
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Download the example code files
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Code in Action
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Download the color images
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Conventions used
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Get in touch
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Share Your Thoughts
1
Section 1: Using ESP32
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Section 1: Using ESP32
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2
Chapter 1: Getting Started with ESP32
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Chapter 1: Getting Started with ESP32
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Technical requirements
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IoT as an emerging technology
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Understanding the basic structure of IoT solutions
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Introduction to ESP32 platform and modules
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Development platforms and frameworks
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RTOS options
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Summary
3
Chapter 2: Talking to the Earth – Sensors and Actuators
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Chapter 2: Talking to the Earth – Sensors and Actuators
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Technical requirements
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Toolchain installation, programming, and debugging ESP32
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Warming up – Basic I/O with buttons, pots, and LEDs
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Working with sensors
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Working with actuators
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Summary
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Questions
4
Chapter 3: Impressive Outputs with Displays
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Chapter 3: Impressive Outputs with Displays
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Technical requirements
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Liquid Crystal Displays (LCDs)
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Organic Light-Emitting Diode Displays (OLEDs)
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Thin Film Transistor Displays (TFTs)
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Using FreeRTOS
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Summary
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Questions
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Chapter 4: A Deep Dive into the Advanced Features
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Chapter 4: A Deep Dive into the Advanced Features
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Technical requirements
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Communicating over UART
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Adding a speaker with I²S
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Developing a camera application
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Developing low-power applications
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Summary
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Questions
6
Chapter 5: Practice – Multisensor for Your Room
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Chapter 5: Practice – Multisensor for Your Room
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Technical requirements
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Feature list of the multisensor
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Solution architecture
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Implementation
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Summary
7
Section 2: Local Network Communication
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Section 2: Local Network Communication
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Chapter 6: A Good Old Friend – Wi-Fi
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Chapter 6: A Good Old Friend – Wi-Fi
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Technical requirements
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Using Wi-Fi
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Developing with lwIP
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Summary
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Questions
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Further reading
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Chapter 7: Security First!
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Chapter 7: Security First!
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Technical requirements
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Secure boot and over-the-air (OTA) updates
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Securing communication with TLS/DTLS
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Integrating with secure elements
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Summary
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Questions
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Further reading
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Chapter 8: I Can Speak BLE
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Chapter 8: I Can Speak BLE
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Technical requirements
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Understanding BLE basics
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Developing a BLE beacon
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Developing a GATT server
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Setting up a BLE Mesh network
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Summary
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Questions
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Further reading
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Chapter 9: Practice – Making Your Home Smart
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Chapter 9: Practice – Making Your Home Smart
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Technical requirements
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Feature list
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Solution architecture
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Implementation
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Summary
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Section 3: Cloud Communication
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Section 3: Cloud Communication
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Chapter 10: No Cloud, No IoT – Cloud Platforms and Services
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Chapter 10: No Cloud, No IoT – Cloud Platforms and Services
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Technical requirements
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IoT protocols with ESP32
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Understanding cloud IoT platforms
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Developing on AWS IoT
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Summary
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Questions
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Chapter 11: Connectivity Is Never Enough – Third-Party Integrations
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Chapter 11: Connectivity Is Never Enough – Third-Party Integrations
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Technical requirements
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Integrating with Amazon Alexa
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Defining rules with IFTTT
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Summary
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Questions
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Further reading
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Chapter 12: Practice – A Voice-Controlled Smart Fan
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Chapter 12: Practice – A Voice-Controlled Smart Fan
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Technical requirements
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Feature list of the smart fan
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Solution architecture
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Implementation
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Summary
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Why subscribe?
16
Other Books You May Enjoy
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Other Books You May Enjoy
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Packt is searching for authors like you
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Chapter 1: Getting Started with ESP32

Espressif ESP32 is a powerful tool in the toolbox of a developer for many types of Internet of Things (IoT) projects. We are all developers, and we all know how important it is to select the right tool for a given problem in a domain. To solve the problem, we need to understand the domain, and we need to know the available tools and their features that are important for that specific problem in order to find the right one (or perhaps several combined). After selecting the tool, we eventually need to figure out how to use it in the most efficient and effective way possible so as to maximize the added value for end users.

In this chapter, I will discuss the technology, IoT, in general, what an IoT solution looks like in terms of basic architecture, and how ESP32 fits into those solutions as a tool. If you are new to IoT technology, or are thinking of using ESP32 in your next project, this chapter helps you to understand the big picture from the technology perspective by describing what ESP32 provides, its capabilities, and its limitations.

The main topics covered in this chapter are as follows:

  • IoT as an emerging technology and its application areas with some examples
  • The basic structure of IoT solutions, including security considerations
  • An introduction to the ESP32 platform and modules
  • Available development platforms and frameworks
  • Real-Time Operating System (RTOS) options for ESP32
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