Building a Home Security System with Raspberry Pi
eBook - ePub

Building a Home Security System with Raspberry Pi

  1. 190 pages
  2. English
  3. ePUB (mobile friendly)
  4. Available on iOS & Android
eBook - ePub

Building a Home Security System with Raspberry Pi

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About This Book

Build your own sophisticated modular home security system using the popular Raspberry Pi board

About This Book

  • This book guides you through building a complete home security system with Raspberry Pi and helps you remotely access it from a mobile device over the Internet
  • It covers the fundamentals of interfacing sensors and cameras with the Raspberry Pi so that you can connect it to the outside world
  • It follows a modular approach so that you can choose the modules and features you want for your customized home security system

Who This Book Is For

This book is for anyone who is interested in building a modular home security system from scratch using a Raspberry Pi board, basic electronics, sensors, and simple scripts. This book is ideal for enthusiastic novice programmers, electronics hobbyists, and engineering professionals. It would be great if you have some basic soldering skills in order to build some of the interface modules.

What You Will Learn

  • Understand the concepts behind alarm systems and intrusion detection devices
  • Connect sensors and devices to the on-board digital GPIO ports safely
  • Monitor and control connected devices easily using Bash shell scripting
  • Build an I/O port expander using the I2C bus and connect sensors and anti-tamper circuits
  • Capture and store images using motion detectors and cameras
  • Access and manage your system remotely from your mobile phone
  • Receive intrusion alerts and images through your e-mail
  • Build a sophisticated multi-zone alarm system

In Detail

The Raspberry Pi is a powerful low-cost credit-card-sized computer, which lends itself perfectly as the controller for a sophisticated home security system. Using the on-board interfaces available, the Raspberry Pi can be expanded to allow the connection of a virtually infinite number of security sensors and devices. The Raspberry Pi has the processing power and interfaces available to build a sophisticated home security system but at a fraction of the cost of commercially available systems.

Building a Home Security System with Raspberry Pi starts off by showing you the Raspberry Pi and how to set up the Linux-based operating system. It then guides you through connecting switch sensors and LEDs to the native GPIO connector safely, and how to access them using simple Bash scripts. As you dive further in, you'll learn how to build an input/output expansion board using the I2C interface and power supply, allowing the connection of the large number of sensors needed for a typical home security setup.

In the later chapters of the book, we'll look at more sophisticated topics such as adding cameras, remotely accessing the system using your mobile phone, receiving intrusion alerts and images by e-mail, and more.

By the end of the book, you will be well-versed with the use of Raspberry Pi to power a home-based security system that sends message alerts whenever it is triggered and will be able to build a truly sophisticated and modular home security system. You will also gain a good understanding of Raspberry Pi's ecosystem and be able to write the functions required for a security system.

Style and approach

This easy-to-follow guide comprises a series of projects, where every chapter introduces a new concept and at the end of the book, all these concepts are brought together to create an entire home security system. This book features clear diagrams and code every step of the way.

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Yes, you can access Building a Home Security System with Raspberry Pi by Matthew Poole in PDF and/or ePUB format, as well as other popular books in Computer Science & Hardware. We have over one million books available in our catalogue for you to explore.

Information

Year
2015
ISBN
9781782175278
Edition
1

Building a Home Security System with Raspberry Pi


Table of Contents

Building a Home Security System with Raspberry Pi
Credits
About the Author
About the Reviewers
www.PacktPub.com
Support files, eBooks, discount offers, and more
Why subscribe?
Free access for Packt account holders
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
Errata
Piracy
Questions
1. Setting Up Your Raspberry Pi
Which flavor of Pi?
Raspberry Pi Model A
Raspberry Pi Model B
Raspberry Pi Model B+ and Model 2
Model comparison table
So which one?
Preparing the SD card
Downloading the Raspbian image
Using Microsoft Windows
Using Linux
Booting your Pi
Expanding the file system
Using the raspi-config utility
Setting up your Pi
Getting up to date
Getting the right time
fake-hwclock
ntp
Talking of security…
What is this sudo thing anyway?
Connecting via Wi-Fi
Summary
2. Connecting Things to Your Pi with GPIO
Prerequisites
Say hello to the GPIO
Digital I/O pins
The I2C bus
The SPI bus
The UART serial bus
USB ports
Power connections
Getting acquainted with the GPIO
Let there be light
Getting flashy…
Adding a switch
Pulling yourself together
The detection script
The most elaborate light switch in the world
The illuminating script
Summary
3. Extending Your Pi to Connect More Things
Prerequisites
The I2C bus
Just 2 wires
What's your address?
There is a parallel universe
Serial-to-parallel conversion
Give me power
Building an I2C expander
The I2C port expander circuit
Let's walk through the circuit
Building your expansion board
Using ready-made expansion boards
Hobbytronics MCP23017 expander port kit
PiFace Digital I/O expansion board
Gertboard
Summary
4. Adding a Magnetic Contact Sensor
Prerequisites
The working of magnetic contact sensors
Setting up the I2C port expander
Enabling the I2C Bus
Installing the I2C tools package
Finding our devices
Setting up the port expander
Connecting our magnetic contact sensor
Monitoring the sensor
Anti-tamper circuits
Getting into the zone
Summary
5. Adding a Passive Infrared Motion Sensor
Prerequisites
Passive infrared sensors explained
Setting up your PIR sensor
Give me power (again)
Connecting our PIR motion sensor
12V alarm zone circuits
Alarm circuit protection
How it works
Wireless PIR motion sensors
433-MHz wireless alarm systems
Connecting a 433-MHz receiver
The alternative approach (because we have no choice)
The receiver wiring diagram
Logging detection data
Summary
6. Adding Cameras to Our Security System
Prerequisites
The Raspberry Pi camera module
Connecting the camera module
Setting up the camera module
Testing the camera module
Be a video star
Caught on camera
You have new mail
Setting up the e-mail sender client
Sending attachments
Where was that taken?
Night vision
An illuminating experience
The Elaborate light switch re-visited
Is that a badger?
Using USB cameras
Installing the webcam
Taking a snap
Snap snap snap
The multicamera setup
The Slave driver
Summary
7. Building a Web-Based Control Panel
Installing the web server
Testing the PHP5 installation
Being in control
Arming yourself
The master configuration file
Creating the web page
The control panel HTML template
Giving it some style
Making it dynamic
Getting a bit of help first
The main PHP code
I'm someone else
Remote access to our control panel
Setting up a dynamic DNS account
The Raspberry Pi dynamic DNS client
Setting up a static IP on your Raspberry Pi
Port-forwarding
Summary
8. A Miscellany of Things
Arming and disarming the system
Driving inductive loads
Beyond intrusion
A simple water detector
How it works
A simple temperature sensor
How it works
A carbon monoxide detector
Remote administration for our Raspberry Pi
Getting Webmin
Updating the repository sources
Importing the signing key
Accessing Webmin locally
Remotely accessing Webmin
Summary
9. Putting It All Together
Alarm system diagram
Overview of the system elements
A +12V power supply
A +3.3V power supply
The opto-isolator input module
The port expander
An arm/disarm switch
Alarm outputs
Designing the control scripts
Building the control script
Exploring the script code
Declarations
Updating config settings
Setting up the GPIO
Setting up the I2C port expander
Decoding the zone inputs status
Initialization
The system monitoring loop
Arming the system
Monitoring the zones
Entry delay
Sounding the main alarm
Disarming and resetting the system
We're done (almost)…
Automatically starting the system
Preserving the SD card
Creating a RAM-based file system
Conclusion
Tips for building systems
Summary
Index

Building a Home Security System with Raspberry Pi

Copyright © 2015 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 sol...

Table of contents

  1. Building a Home Security System with Raspberry Pi