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Raspberry Pi Embedded Projects Hotshot

By : Sai Yamanoor, Srihari Yamanoor

Raspberry Pi Embedded Projects Hotshot

By: Sai Yamanoor, Srihari Yamanoor

Overview of this book

This book is targeted towards beginners and intermediate designers of mechatronic systems and embedded system design. Some familiarity with the Raspberry Pi and Python programming is preferred but not required.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Mission briefing

Task 1

Reader feedback

Customer support

Free Chapter

1. Hello World

1. Hello World

A quick introduction to the Raspberry Pi

Where can I buy a Raspberry Pi?

Mission briefing

Hunting and gathering

Setting up the GPIO

GPIO programming using Python

Electrical output of our program

Mission accomplished

Hotshot challenge

2. A Raspberry WebIDE Example

2. A Raspberry WebIDE Example

Mission briefing

Installation, features, and usage of the Occidentalis operating system from Adafruit

Setup of a remote login into the Raspberry Pi

Installation of the Raspberry Pi WebIDE

Python development on the WebIDE

Test and debugging examples using the WebIDE

Mission accomplished

Hotshot challenge

3. The Arduino Raspberry Pi Interface

3. The Arduino Raspberry Pi Interface

Mission briefing

Installing the Arduino IDE

Programming the Arduino using the Raspberry Pi

Raspberry Pi AlaMode

The Weasley weather clock

Controlling the stepper using the Arduino

Controlling the RGB LED Strip using the Arduino

I2C Communication using the Arduino (optional)

Serial port communication with the Raspberry Pi

Mission accomplished

Hotshot challenge

4. Christmas Light Sequencer

4. Christmas Light Sequencer

Mission briefing

Interface the devices to the Raspberry Pi

Setting up the digitally addressable RGB matrix

Interface of an audio device

Installing the web server

Interfacing the web server

Mission accomplished

5. Internet of Things Example – An E-mail Alert Water Fountain

5. Internet of Things Example – An E-mail Alert Water Fountain

Mission briefing

Installation of the Flask framework

Controlling RGB LEDs from a web page

Setup of the e-mail alerts in the fountain

Mission accomplished

Hotshot challenge

6. Raspberry Pi as a Personal Assistant

6. Raspberry Pi as a Personal Assistant

Mission briefing

Setting up the e-mail feed parser

Setting up the parser for reminders and events

Designing an enclosure design for the personal assistant

Setting up the assembly for the dish monitor

Setting up sensors for the key alert system

Mission accomplished

Hotshot challenges

References

7. Raspberry Pi-based Line Following Robot

7. Raspberry Pi-based Line Following Robot

Mission briefing

Assembly of the Pi Plate for the line following robot

Sensor selection, interface, and data interpretation

Implementation of line following logic based on sensor data

Testing the motor driver circuit

Preparation of the line following course

Designing the chassis for the line following robot

A step-by-step assembly of the robot

Mission accomplished

Hotshot challenge

8. Connect Four Desktop Game using Raspberry Pi

8. Connect Four Desktop Game using Raspberry Pi

Mission briefing

Hello world example with the pygame

Getting started with the Connect Four game (UI and sound effects)

Interfacing game inputs using the PiFace module

A brief description of the Connect Four Game AI

Marquee design and control (optional)

Setup of the switches using a cardboard box

Mission accomplished

Hotshot challenge

9. The Raspberry Pi-enabled Pet/Wildlife Monitor

9. The Raspberry Pi-enabled Pet/Wildlife Monitor

Mission briefing

Installing and testing the python-twisted framework

Setting up and testing Spark Core to interact with appliances

Installing and testing the Google Coder project on the Raspberry Pi

A brief overview of a bird feeder that triggers a camera

Mission accomplished

Hotshot challenge

10. Raspberry Pi Personal Health Monitor

10. Raspberry Pi Personal Health Monitor

Mission briefing

Setting up a web server to record health parameters

A simple exercise tool using the Raspberry Pi

Setting up an e-mail feed parser to refill a prescription as well as remind the user about an upcoming doctor's appointment

A simple tool that reminds a person to take his/her pills

Mission accomplished

Hotshot challenge

11. Home Automation using Raspberry Pi

11. Home Automation using Raspberry Pi

Mission briefing

A simple example that controls limited indoor and outdoor lighting in the evening

A customary web server example

Turning on a lawn sprinkler only when there is no rain forecast!

Mission accomplished

12. Using a Raspberry Pi for Science and Education

12. Using a Raspberry Pi for Science and Education

Mission briefing

Improving your vocabulary using the Raspberry Pi

Raspberry Pi and Khan Academy

Building a science fair exhibit using the Raspberry Pi

Hotshot challenge

13. Tips and Tricks

13. Tips and Tricks

Mission briefing

Setting up Raspberry Pi as a development platform

Remotely logging in the Raspberry Pi from anywhere on the Internet

Problems that might be encountered while using Raspberry Pi

Cool add-on hardware sources developed for the Raspberry Pi platform

Project ideas that can be implemented over a weekend

Useful resources for the Raspberry Pi

Mission accomplished

Index

Index

Customer Reviews

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Interface of an audio device

In this task, we will work on installing MP3 and WAV file audio player tools on the Raspbian operating system.

Prepare for lift off

The Raspberry Pi is equipped with a 3.5mm audio jack and the speakers can be connected to that output. In order to get started, we install the ALSA utilities package and a command-line mp3 player:

sudo apt-get install alsa-utils
sudo apt-get install mpg321

Engage thrusters

In order to use the alsa-utils or mpg321 players, we have to activate the BCM2835's sound drivers and this can be done using the modprobe command:

sudo modprobe snd_bcm2835

After activating the drivers, it is possible to play the WAV files using the aplay command (aplay is a command-line player available as part of the alsa-utils package) :

aplay testfile.wav

An MP3 file can be played using the mpg321 command (a command-line MP3 player) :

mpg321 testfile.mp3

Note

In the preceding examples, the commands were executed in the directory where the WAV file or the MP3...

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