Book Image

Developing IoT Projects with ESP32

By : Vedat Ozan Oner
Book Image

Developing IoT Projects with ESP32

By: Vedat Ozan Oner

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 (18 chapters)
1
Section 1: Using ESP32
7
Section 2: Local Network Communication
12
Section 3: Cloud Communication

Chapter 12: Practice – A Voice-Controlled Smart Fan

In this final chapter of the book, we are going to develop another smart home device, a smart fan. We will take an ordinary fan that has mechanical buttons on it to control the fan speed and we will convert this fan into a smart one where we can set the speed by voice in addition to its buttons. The fan that I am going to hack in this project has four buttons, where one button is for stopping the fan and the other three are for three different speed modes, from slow to fast. The idea is to intercept the button presses by connecting the speed buttons of the fan to GPIO pins of ESP32 and control the speed via relays when a button press is detected. It will also respond to voice commands by changing the relay states. The voice assistant will be Amazon Alexa and we will use Amazon IoT Core and Lambda as the backend services to handle the voice commands.

This chapter introduces a great opportunity to practice what we have learned...