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

Integrating with Amazon Alexa

As we have discussed, AVS allows us to add voice features to our connected devices. When we integrate with AVS, ESP32 can report to voice commands and take action if it is commanded to do so. In this section, we will see how to develop an Alexa-enabled temperature sensor by using ESP32. Although developing the sensor firmware is a relatively easy task, creating an Alexa skill requires attention. The following is what we need to do:

  1. Create a smart home skill in the Alexa development environment.
  2. Create a Lambda function as the backend service of the smart home skill.
  3. Link the Amazon account to the skill.
  4. Enable the skill.
  5. Create a thing in AWS IoT Core.
  6. Develop the Lambda function.
  7. Test the skill.
  8. Develop the sensor firmware.
  9. Test the project with voice commands.

There are many concepts to learn regarding Alexa development, which we are going to cover while we do all these steps one by one. Let's start...