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

Solution architecture

In this section, we will discuss each node type and show how all the components work together to accomplish the project's goals. Although the feature list described some of the common functionality of the nodes, it would be much clearer to discuss each node separately. Let's start with the light sensor.

Light sensor

The light sensor device will have the following features and functionality:

  • It integrates a TLS2561 sensor to measure the ambient light level.
  • It reads from TLS2561 every second and compares the reading against a predetermined threshold level.
  • When the level goes below or above the threshold, it broadcasts a message to the BLE network, indicating a high/low status of the light reading.
  • The user can provision the device in a BLE network by using a mobile app. During provisioning, it blinks an integrated LED indicator.

For this set of features, we can design and implement the following software modules in the...