Raspberry Pi: Amazing Projects from Scratch

Ashwin Pajankar, Arush Kakkar, Matthew Poole, Richard Grimmett

• Publisher: Packt Publishing
• Year: 2016
• ISBN:
  9781787128491
• Edition: 1
• Topic: Computer Science
• Subtopic: Cyber Security
• Index: Computer Science

Explore the powers of Raspberry Pi and build your very own projects right out of the box

About This Book

• From robotics to gaming, this Learning Path will unlock your creativity!
• Build your own impressive IoT projects to transform your home
• Featuring some of Packt's very best Raspberry Pi content, this Learning Path doesn't just get you to your destination – it opens up a whole horizon of possibilities!

Who This Book Is For

Want new ideas for your next Raspberry Pi project? Got one lying around gathering dust? This Learning Path gets you straight into the creative dirty work of programming and playing with your pi. Whether your new to Raspberry Pi, or an experienced maker, we think this Learning Path will inspire you and get your creative juices flowing!

What You Will Learn

• Discover an aweome range of Raspberry Pi projects
• Bridge the gap between software and hardware through your Pi and find out how to make an operating system interact with cameras and other hardware
• Find out how to use your Raspberry Pi for gaming
• Secure your home with this tiny computer!
• Make science fiction a reality – build a walking robot

In Detail

Looking for inspiration for your next Raspberry Pi project? Not sure where to begin? This Learning Path is the perfect place to begin, providing you with an accessible yet comprehensive journey through Raspberry Pi. Following three modules, you'll soon be confident and prepared to get creative with your microcomputer.

Raspberry Pi by Example is the first module in this Learning Path – and it does exactly what it says. It doesn't just teach, it shows you how to go and build some awesome Raspberry Pi projects immediately. Build and play your own games with the Pi, build a complete Internet of Things home automation system that controls your house through Twitter... let your imagination run wild!

In the next module we'll look in more depth at building a home security system. You'll be using some of the skills you devoped through the first module, but apply them to something more intricate and impressive. Using a Linux based operating system as the foundations, you'll gradually build up an entire security infrastructure adding cameras, remote controls, and even intrusion alerts!

In the final module, we'll take you into the world of Raspberry Pi robotics. By the end of it, you'll have built a biped robot that can interact with its environment!

This Learning Path combines some of the best that Packt has to offer in one complete, curated package. It includes content from the following Packt products:

• Raspberry Pi By Example by Ashwin Pajankar and Arush Kakkar
• Building a Home Security System with Raspberry Pi by Matthew Pole
• Raspberry Pi Robotics Essentials by Richard Grimmett

Style and approach

It's not every day you build a home automation system. It's not every day you build a walking robot. But with this Learning Path you'll do just that. So get started and let this tiny computer expand your imagination.

Raspberry Pi: Amazing Projects from Scratch

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Table of Contents

Raspberry Pi: Amazing Projects from Scratch

Raspberry Pi: Amazing Projects from Scratch

Credits

Preface

What this learning path covers

What you need for this learning path

Who this learning path is for

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Module 1

1. Introduction to Raspberry Pi and Python

Single-board computers

Raspberry Pi

Raspberry Pi models

Operating systems

Raspbian

Setting up the Raspberry Pi

Preparing MicroSD card manually

Booting up our Pi for the first time

Shutting down and rebooting Pi safely

Updating the Pi

Getting started with Python

Turtle programming with Python

Summary

2. Minecraft Pi

Introduction to Minecraft Pi

Playing Minecraft Pi

Movement control in Minecraft Pi

Action control in Minecraft Pi

Other controls in Minecraft Pi

Python programming for Minecraft Pi

Summary

3. Building Games with PyGame

Introducing PyGame

Installing PyGame

Drawing a binary fractal tree

Building a snake game

Summary

4. Working with a Webcam and Pi Camera

Working with webcams

Crontab

Creating a timelapse sequence using fswebcam

Webcam video recording and playback

Working with the Pi Camera and NoIR Camera modules

Using raspistill and raspivid

Using picamera in Python with the Pi Camera module

The Pi camera versus the webcam

Summary

5. Introduction to GPIO Programming

Introducing GPIO pins

Building an LED Blinker

Connecting a button

Installing PiGlow

Using PiGlow

Building a binary clock

Summary

6. Creating Animated Movies with Raspberry Pi

Introducing stop-motion animation

Setting up the prerequisites

Setting up and testing the camera

Adding the hardware button

Rendering the video

Summary

7. Introduction to Computer Vision

Introducing Computer Vision

Introducing OpenCV

Setting up Pi for Computer Vision

Testing the OpenCV installation with Python

Introducing NumPy

Array creation

Basic operations on arrays

Linear algebra

Working with images

Using matplotlib

Working with Webcam using OpenCV

Saving a video using OpenCV

Pi Camera and OpenCV

Retrieving image properties

Arithmetic operations on images

Splitting and merging image color channels

Negating an image

Logical operations on images

Colorspaces and conversions

Tracking in real time based on color

Summary

8. Creating Your Own Motion Detection and Tracking System

Thresholding images

Otsu's method

Noise

Kernels for noise removal

2D convolution filtering

Low pass filtering

Morphological transformations on images

Motion detection and tracking

Summary

9. Grove Sensors and the Raspberry Pi

Introducing the GrovePi

Setting up the GrovePi

Displaying the weather

Intruder detection system

Summary

10. Internet of Things with the Raspberry Pi

Introducing the Internet of Things

Installing the Twitter API for Python

Using Tweepy

Setting up a SQLite database in Python

Building a tweeting weather station

Adding speech capabilities to our weather station

Summary

11. Build Your Own Supercomputer with Raspberry Pi

Introducing a Pi-based supercomputer

Installing and configuring MPICH2 and MPI4PY

Installing the MPICH library

Installing MPI4PY

Setting up the Raspberry Pi cluster

Setting up SSH access from the host to the client

Running code in parallel

Performance benchmarking of the cluster

Introducing N-Body simulations

Installing and running GalaxSee

Summary

12. Advanced Networking with Raspberry Pi

Introducing DHCP

A few networking concepts

Configuring a Raspberry Pi to act as a DHCP server

Introducing Domain Naming System (DNS)

Setting up a DNS server on the Pi

Configuring the setup for a web server

Automating node discovery in a network

Summary

13. Setting Up a Web Server on the Raspberry Pi

Introducing and installing Apache on Raspbian

Installing PHP and MySQL

Installing WordPress

Configuring the WordPress installation

Summary

14. Network Programming in Python with the Pi

The basics of sockets

The difference between TCP and UDP

The architecture and programming of UDP sockets

Sending and receiving data with UDP

UDP servers and NCAT

An echo server using Python UDP sockets

A UDP client

The architecture of TCP sockets

Creating a TCP socket

Connecting to a server with a TCP socket

Receiving data from the server

Programming socket servers

Binding a socket

Listening for incoming connections

Handling multiple connections

Looking back

A Telnet client in Python

A chat program

The chat server

The chat client

References

Exercise

Summary

15. Newer Raspberry Pi Models

The Raspberry Pi Zero

The Raspberry Pi 3

2. Module 2

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...