Internet of Things with Raspberry Pi 3电子书

Title Page

Copyright and Credits

Internet of Things with Raspberry Pi 3

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Contributors

About the author

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Preface

Who this book is for

What this book covers

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Download the example code files

Download the color images

Conventions used

Get in touch

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Introduction to IoT

Understanding IoT

Defining IoT

Architecture of an IoT ecosystem

History and evolution

IoT–applications and future prospects

Summary

Know Your Raspberry Pi

Understanding Raspberry Pi 3

Important features of Raspberry Pi 3 Model B

Setting up Raspberry Pi

Connecting to the internet

Setting up headless Raspberry Pi

Summary

Let's Communicate

The internet

The rise of JavaScript and Node.js

Node.js

Advantages of using Node.js for IoT

HTTP

Implementing HTTP

HTTP server

HTTP client

MQTT

MQTT architecture

MQTT message types

MQTT topics

QoS levels

Last will and testament

Retained messages

Persistent sessions

Keep alive message

MQTT brokers

MQTT implementation

MQTT broker

MQTT client

Summary

Weather Station

Sensors

Temperature sensor DS18B20

DHT11 humidity sensor

Weather API

Google sheets

Summary

Controlling the Pi

L293D

DC motor

Light-emitting diode

Summary

Security Surveillance

Infrared sensors

Types of IR sensors

Ultrasonic sensors

Buzzer

Raspberry Pi camera module

Wiring up

Interfacing PIR sensor module HC-SR501

Interfacing an active IR sensor

Interfacing an ultrasonic sensor HC-SR04

Interfacing an LED

The code

Camera module code

Email module code

Sensor module code

Summary

Image Recognition

Understanding image recognition

Deep learning

How image recognition works

Gathering data

Organizing data

Building a predictive model

Recognizing an image

Amazon Web Services

AWS S3

AWS Rekognition

Identity and access management

Command line interface

Implementation

Create collection

Upload reference image

Face comparison

Wiring up

Interfacing IR sensor

Interfacing LEDs

Interfacing the Pi camera module

The code

Index face module code

Search face by image module code

S3 bucket module code

Camera module code

Upload reference image module code

Compare image module code

Summary

Bot Building

Car chassis

Pulse-width modulation

Analog signal

Digital signal

Wiring up the bot

Wiring L293D with motor

Wiring L293D with Raspberry Pi

Forward movement

Reverse movement

Right turn

Left turn

Stop

Speed control

Executing the commands

Summary

Security in IoT

The challenges in providing IoT security

Security in endpoint devices – constrained devices

Authorization and authentication

Device firmware upgrade

Secure communication

Data security

High availability

Identifying cyber attacks

Absence of standards

Ignorance from customers and manufactures

Trends and challenges in specific industries

Automotive industries

Smart homes and buildings

Securing Raspberry Pi

Changing the default password

Changing the username

Making sudo require a password

Improving SSH security

Username and password security

Key-based authentication

Setting up a firewall

Fail2Ban

Summary

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