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- Herausgeber: Packt Publishing
- Kategorie: Fachliteratur
- Sprache: Englisch
The ESP8266 is a low-cost yet powerful Wi-Fi chip that is becoming more popular at an alarming rate, and people have adopted it to create interesting projects.
With this book, you will learn to create and program home automation projects using the ESP8266 Wi-Fi chip. You will learn how to build a thermostat to measure and adjust the temperature accordingly and how to build a security system using the ESP8266. Furthermore, you will design a complete home automation system from sensor to your own cloud. You will touch base on data monitoring, controlling appliances, and security aspects.
By the end of the book, you will understand how to completely control and monitor your home from the cloud and from a mobile application. You will be familiar with the capabilities of the ESP8266 and will have successfully designed a complete ready-to-sell home automated system.
Das E-Book können Sie in Legimi-Apps oder einer beliebigen App lesen, die das folgende Format unterstützen:
Veröffentlichungsjahr: 2017
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BIRMINGHAM - MUMBAI
ESP8266 Home Automation Projects
Copyright © 2017 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: November 2017
Production reference: 2091118
ISBN 978-1-78728-262-9
www.packtpub.com
Credits
Author
Catalin Batrinu
Project Coordinator
Kinjal Bari
Reviewer
Constantin Tambrea
Proofreader
Safis Editing
Acquisition Editor
Prachi Bisht
Indexer
Francy Puthiry
Content Development Editor
Eisha Dsouza
Graphics
Tania Dutta
Technical Editor
Naveenkumar Jain
Production Coordinator
Melwyn Dsa
Copy Editor
Safis Editing
About the Author
Catalin Batrinu graduated from the Politehnica University of Bucharest in Electronics, Telecommunications, and Information Technology. He has been working as a software developer in telecommunications for the past 16 years. He has worked with old protocols and the latest network protocols and technologies, so he has experienced all the recent transformations in the telecommunications industry. He has implemented many telecommunications protocols, from access adaptations and backbone switches to high-capacity, carrier-grade switches on various hardware platforms from Wintegra and Broadcom.
The Internet of Things came as a natural evolution for him and now he collaborates with different companies to construct the world of tomorrow, which will make our life more comfortable and secure. Using the ESP8266, he has prototyped devices such as irrigation controllers, smart sockets, window shutters, digital addressable lighting controls, and environment controls, all of them controlled directly from a mobile application via the cloud. An MQTT broker with bridging and a WebSockets server was even developed for the ESP8266. Soon, these devices will be part of our daily lives, so we will all enjoy their functionality.
Don't forget to then keep an eye on his blog https://myesp8266.blogspot.com and on the new platform as a service that you will discover soon at https://iotcentral.eu.
About the Reviewer
Constantin Tambrea has been a senior software engineer at Luxoft Romania for more than 9 years, and has been involved in various projects in the telecommunications field. He holds master's and bachelor's degrees in Computer Science from University Politehnica in Bucharest. His main domains of interest are Java Enterprise applications and web development techniques, but recently he has become passionate about the Internet of Things domain, in which he is experimenting with a personal home automation project.
I would like to give thanks to Catalin Batrinu, my colleague, and friend, for introducing me to the IoT world and for encouraging me to review his work on this book.
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Table of Contents
Title Page
Copyright
ESP8266 Home Automation Projects
Credits
About the Author
About the Reviewer
www.PacktPub.com
Why subscribe?
Customer Feedback
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example code
Downloading the color images of this book
Errata
Piracy
Questions
Getting Started with the ESP8266
Starting with the ESP8266 chip
Installing Arduino IDE
Downloading the Arduino Software IDE
Configure Arduino IDE
Installing the ESP8266 SDK
How to install a library
Libraries from the Arduino's repository
Library is not in the repository
It is time for your first program
Seeing the result
Connecting ESP8266 to Wi-Fi
Getting data from the internet
Sending data to the internet
Summary
Building and Configuring Your Own MQTT Server
Message Queue Telemetry Transport
Quality of service
Security
Retain messages and last will
Basic terminology
Wildcards on topics
Introducing Mosquitto broker
ESP8266 and MQTT
Publishing data from the ESP8266
Receiving MQTT messages in the ESP8266
Securing Mosquitto
Summary
Building a Home Thermostat with the ESP8266
SPIFFS
SPIFFS objects
Directory object
File object
Temperature sensor
Summary
Control Appliances from the ESP8266
Using the WiFiManager library
Adding parameters to the WiFiManager setup page and saving them into the file
ESP8266 and Infrared communication
Hardware components
Software and libraries for this project
Summary
Using ESP8266 to Build a Security System
Passive infrared sensor
How PIRs work
Testing the PIR module
Connecting the PIR module to the internet
The ESP8266 PIR security code
Summary
Securing Your Data
Enabling encryption on mosquitto
Installing the openssl package
Generating your own certificates
Securing a connection between ESP8266 and an MQTT broker
Working offline
Saving data on the SD card
Summary
Real-Time Communication
WebSockets
Protocol details
Streaming data from ESP8266
ADXL345 accelerometer
Connection to the ESP8266
ESP8266 code
Backend code
Public web page
Summary
Adding a Mobile Application to Your Smart Home
Installing Docker and using containers
Getting the development image
Docker images
Setting up the local broker
ESP8266 code specifications
Summary
Preface
Since the first house was built, man has made a conscious effort to improve it, to make it more comfortable and safe. Home automation or domotics has been around since decades in terms of lighting and simple appliance control and only recently has technology caught up for the idea of the interconnected world, allowing full control of your home from anywhere, to become a reality.
ESP8266 is a low-priced chip that allows you to build home automation system effectively. This book will demonstrate a few easy-to-implement home automation projects ranging from controlling a relay, to reading all kinds of parameters such as temperature, humidity, light, or presence. It also allows you to send the values from your ESP8266 modules to your private cloud. More than that, you will design and build a secure cloud and a mobile application that can bring comfort and safety at your fingertips. By the end of this book, you will be capable of building your own interconnected devices for better living.
There are many choices available in the market and you can choose your own ESP8266 module based on your project needs. Some of the widely accepted home automation projects are building a portable environmental monitor, wireless remote LCD, Air Gesture AC Dimmer/Switch, Wi-Fi Smart Garage Door, IoT Air Freshener, and internet-enabled smoke alarm.
Home automation is definitely here to stay as it continues to fill the needs of consumers who are looking for better ways to access information and control the home environment. With home automation, you can control your device the way you want.
What this book covers
Chapter 1, Getting Started with the ESP8266, covers the basics of the ESP8266 Wi-Fi chip, including how to choose a module, and how to configure the ESP8266 chip. You will learn how to configure the ESP8266 board, so it can be used for the rest of the book. You will know how to choose the right ESP8266 module as there are many choices available on the market. After that, you will learn the basics of the ESP8266 Wi-Fi chip, and learn how to read data from a sensor connected to the chip.
Chapter 2, Building and Configuring Your Own MQTT Server, speaks about building and configuring an MQTT server to be used with the ESP8266. The chapter will instruct you on how to get, compile, install, and configure an MQTT server to be used in the chapters as a central MQTT gateway.
Chapter 3, Building a Home Thermostat with the ESP8266, covers how to build a home thermostat using the ESP8266. You will learn how to measure the temperature in your home using a thermostat, how to display this temperature on a screen, and also how to adjust the temperature according to your wishes.
Chapter 4, Control Appliances from the ESP8266, shows how to control home appliances that are often present in a house, such as lamps, LEDs, and other appliances. You will learn how to control several home appliances using only the ESP8266 Wi-Fi chip. Thanks to the Wi-Fi connectivity of the chip, you will be able to control all the appliances remotely.
Chapter 5, Using ESP8266 to Build a Security System, covers how to build a complete security system based on the ESP8266. You will learn how to connect to your ESP8266 module's elements that are necessary to a security system, such as motion detectors, cameras, and alarms. You will then be able to build a complete security system based on these elements.
Chapter 6,Securing Your Data, This chapter is about adding SSL to secure communication between the ESP8266 modules and broker. You will learn to encrypt the packets in order to secure the data and make sure that your communication remains private.
Chapter 7,Real-Time communication, there are some use cases where you need to see data retrieved from the sensors in real time, to log the values in a database or to show them on a nice graph.
Chapter 8, Adding a Mobile Application to Your Smart Home, to complete the journey in the smart home world and have your house in control from your phone, you will create an Android mobile application.
What you need for this book
In order to start working with ESP8266, you will need a series of software and hardware components. The ESP8266 chip and its module, sensors like ADXL345, temperature sensors, PIR sensors, and cables, soldering tools. In every chapter, I've tried to make a good picture and provide the good description.
For the software, we would require PC with Windows and VirtualBox installed. For application Arduino IDE with at least 1.5.3 SDK version for the ESP8266, Lubuntu Linux 16.04 installed in Virtual Box, Docker installed in Virtual Box, InfluxDB and Grafana installed in Virtual Box.
Who this book is for
This book is for people who want to build connections and inexpensive home automation projects using the ESP8266 Wi-Fi chip, and to completely automate their homes. A basic understanding of the board would be an added advantage.
Conventions
In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "The following is thesetup()function to connect to the Wi-Fi network."
A block of code is set as follows:
#include <ESP8266WiFi.h>
#include <JsonListener.h>
#include "WundergroundClient.h"
Any command-line input or output is written as follows:
sudo openssl rsa -in ca.crt -out newca.pem
New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Click onSign in to network."
Reader feedback
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To send us general feedback, simply e-mail [email protected], and mention the book's title in the subject of your message.
If there is a topic that you have expertise in and you are interested in either writing or contributing to a book, see our author guide at www.packtpub.com/authors.
Customer support
Now that you are the proud owner of a Packt book, we have a number of things to help you to get the most from your purchase.
Downloading the example code
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The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/ESP8226_Home_Automation_Projects. We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!
Downloading the color images of this book
We also provide you with a PDF file that has color images of the screenshots/diagrams used in this book. The color images will help you better understand the changes in the output. You can download this file from http://www.packtpub.com/sites/default/files/downloads/ESP8226HomeAutomationProjects_ColorImages.pdf.
Errata
Although we have taken every care to ensure the accuracy of our content, mistakes do happen. If you find a mistake in one of our books-maybe a mistake in the text or the code-we would be grateful if you could report this to us. By doing so, you can save other readers from frustration and help us improve subsequent versions of this book. If you find any errata, please report them by visiting http://www.packtpub.com/submit-errata, selecting your book, clicking on the Errata Submission Form link, and entering the details of your errata. Once your errata are verified, your submission will be accepted and the errata will be uploaded to our website or added to any list of existing errata under the Errata section of that title.
To view the previously submitted errata, go to https://www.packtpub.com/books/content/support and enter the name of the book in the search field. The required information will appear under the Errata section.
