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Internet of Things Projects with ESP32

By : Kurniawan

2 (8)

Internet of Things Projects with ESP32

2 (8)

By: Kurniawan

Overview of this book

ESP32 is a low-cost MCU with integrated Wi-Fi and BLE. Various modules and development boards-based on ESP32 are available for building IoT applications easily. Wi-Fi and BLE are a common network stack in the Internet of Things application. These network modules can leverage your business and projects needs for cost-effective benefits. This book will serve as a fundamental guide for developing an ESP32 program. We will start with GPIO programming involving some sensor devices. Then we will study ESP32 development by building a number of IoT projects, such as weather stations, sensor loggers, smart homes, Wi-Fi cams and Wi-Fi wardriving. Lastly, we will enable ESP32 boards to execute interactions with mobile applications and cloud servers such as AWS. By the end of this book, you will be up and running with various IoT project-based ESP32 chip.

Preface

Preface

Who this book is for

What this book covers

To get the most out of this book

Get in touch

Free Chapter

Getting Started with ESP32

Getting Started with ESP32

Technical requirements

Introduction to ESP32

Reviewing development boards-based ESP32

Setting up the development environment

Demo 1 – building your first ESP32 program

Arduino programming for ESP32

Demo 2 - making an Arduino Sketch program with ESP32

Summary

Further reading

Making Visual Data and Animation on an LCD

Making Visual Data and Animation on an LCD

Technical requirements

Introduction to ESP32 GPIO

Introduction to IoT for weather monitoring systems

Reading temperature and humidity from a sensor device

Displaying information using an LCD

Making a weather monitoring system

Summary

Further reading

Building a Simple Game with an Embedded ESP32 Board

Building a Simple Game with an Embedded ESP32 Board

Technical requirements

Introducing game-embedded systems

Introducing the joystick sensor module

Working with the joystick sensor module

Working with a sound buzzer

Demo – building a simple embedded game

Summary

Building a Sensor Monitoring Logger

Building a Sensor Monitoring Logger

Technical requirements

Introducing the sensor monitoring logger

Accessing a microSD card from the ESP32

Demo – accessing microSD cards from the ESP32

Storing sensor data on a microSD card

Project – building a sensor monitoring logger

Summary

Controlling IoT Devices over the Internet

Controlling IoT Devices over the Internet

Technical requirements

Introducing ESP32 Wi-Fi development

Scanning Wi-Fi hotspot

Connecting to an existing Wi-Fi network

Accessing data from a web server

Building your own web server inside ESP32

Project - making a smart home

Summary

Building an IoT Weather Station

Building an IoT Weather Station

Technical requirements

Introducing a weather station

Working with DHT sensors

Building an IoT weather station

The auto-refresh weather application

Handling a massive data request for a weather station

Summary

Making Your Own Wi-Fi Wardriving

Making Your Own Wi-Fi Wardriving

Technical requirements

Introducing Wi-Fi Wardriving

Reviewing the GPS module

Accessing your location via the GPS module

Parsing GPS data

Building your own Wi-Fi Wardriving with ESP32

Mapping Wi-Fi hotspots to Google Maps

Privacy issues

Summary

Building Your Own Wi-Fi Cam

Building Your Own Wi-Fi Cam

Technical requirements

Introducing Wi-Fi cams

Reviewing camera modules

Accessing the camera from ESP32

Demo – building a Wi-Fi cam

Summary

Making IoT Devices Interact with Mobile Applications

Making IoT Devices Interact with Mobile Applications

Technical requirements

Introducing mobile applications

Making a mobile application and ESP32 interact

Controlling ESP32 from a mobile application

Summary

Building IoT Monitoring with Cloud Technology

Building IoT Monitoring with Cloud Technology

Technical requirements

Introducing cloud technology

Connecting ESP32 to cloud platforms

Building IoT monitoring with ESP32 and AWS

Summary

Further reading

Other Books You May Enjoy

Other Books You May Enjoy

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Working with the joystick sensor module

Connecting an analog joystick to the ESP32 is easy. You can just connect this device to the analog pins. The ESP32 has two ADC1 and ADC2 pins, with some channels. You can find the analog pins with their channels on the ESP32 in figure 3-5:

Figure 3-5: ADC pinout on ESP32

Some ADC2 pins are used for internal devices such as Wi-Fi. For the ESP-WROVER-KIT board, GPIO 0, 2, 4, and 15 cannot be used for ADC due to external connections for different purposes.

Wiring

In this section, we'll perform hardware wiring between the ESP32 and analog joystick. For demo purposes, I will use the ESP-WROVER-KIT v4.1 board. We can connect our analog joystick with the ESP32 on the following wiring...

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Tech Concepts

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Programming languages

73

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