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Developing IoT Projects with ESP32

You're reading from Developing IoT Projects with ESP32 Automate your home or business with inexpensive Wi-Fi devices

Product type Paperback

Published in Sep 2021

Publisher Packt

ISBN-13 9781838641160

Length 474 pages

Edition 1st Edition

Tools

ESP32

Concepts

IoT Development

Author (1):

Vedat Ozan Oner

View More author details

Table of Contents (17) Chapters

Preface

1. Section 1: Using ESP32

2. Chapter 1: Getting Started with ESP32 FREE CHAPTER

3. Chapter 2: Talking to the Earth – Sensors and Actuators

4. Chapter 3: Impressive Outputs with Displays

5. Chapter 4: A Deep Dive into the Advanced Features

6. Chapter 5: Practice – Multisensor for Your Room

7. Section 2: Local Network Communication

8. Chapter 6: A Good Old Friend – Wi-Fi

9. Chapter 7: Security First!

10. Chapter 8: I Can Speak BLE

11. Chapter 9: Practice – Making Your Home Smart

12. Section 3: Cloud Communication

13. Chapter 10: No Cloud, No IoT – Cloud Platforms and Services

14. Chapter 11: Connectivity Is Never Enough – Third-Party Integrations

15. Chapter 12: Practice – A Voice-Controlled Smart Fan

16. Other Books You May Enjoy

Using Wi-Fi

Nodes in a Wi-Fi network form a star topology, which means a central hub exists and other nodes connect to the central hub to communicate within the Wi-Fi network or with the outside world if the central hub is connected to a router or is itself a router. Therefore, we see two different modes of operation in a Wi-Fi network:

Station (STA) mode
Access point (AP) mode

We can configure ESP32 in both modes. In STA mode, ESP32 can connect to an access point and join a Wi-Fi network as a node. When it is in AP mode, other Wi-Fi-capable devices, such as mobile phones, can connect to the Wi-Fi network that ESP32 starts as the access point. The following figure shows both cases with two different Wi-Fi networks:

Figure 6.1 – ESP32 in STA mode and AP mode

Let's start with an example of STA mode.

STA mode

In this example, we will configure ESP32 in STA mode to connect to a local Wi-Fi network and send a GET request...

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Authors (1)

Vedat Ozan Oner

Vedat Ozan Oner

Vedat Ozan Oner is an IoT product developer and software architect, with an excellent blend of technical knowledge and experience. During his career, he has contributed to several IoT projects in different roles, which allowed him to discover all key aspects of developing successful IoT products in highly competitive markets. Vedat has a bachelor's degree in METU/computer engineering and holds several industry-recognized credentials and qualifications, including PMP®, ITIL®, and AWS Certified Developer. Vedat started his limited company, Mevoo Ltd, in London in 2018 to provide consultancy services to his clients as well as develop his own IoT products. He still lives in London with his family.

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