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  • Book Overview & Buying Raspberry Pi Embedded Projects Hotshot
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Raspberry Pi Embedded Projects Hotshot

Raspberry Pi Embedded Projects Hotshot

By : Sai Yamanoor, Srihari Yamanoor
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Raspberry Pi Embedded Projects Hotshot

Raspberry Pi Embedded Projects Hotshot

By: Sai Yamanoor, Srihari Yamanoor
Buy this Book

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.
Table of Contents (15 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Mission briefing
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Task 1
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Reader feedback
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Customer support
Free Chapter
1
1. Hello World
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1. Hello World
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A quick introduction to the Raspberry Pi
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Where can I buy a Raspberry Pi?
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Mission briefing
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Hunting and gathering
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Setting up the GPIO
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GPIO programming using Python
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Electrical output of our program
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Mission accomplished
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Hotshot challenge
2
2. A Raspberry WebIDE Example
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2. A Raspberry WebIDE Example
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Mission briefing
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Installation, features, and usage of the Occidentalis operating system from Adafruit
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Setup of a remote login into the Raspberry Pi
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Installation of the Raspberry Pi WebIDE
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Python development on the WebIDE
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Test and debugging examples using the WebIDE
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Mission accomplished
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Hotshot challenge
3
3. The Arduino Raspberry Pi Interface
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3. The Arduino Raspberry Pi Interface
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Mission briefing
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Installing the Arduino IDE
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Programming the Arduino using the Raspberry Pi
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Raspberry Pi AlaMode
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The Weasley weather clock
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Controlling the stepper using the Arduino
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Controlling the RGB LED Strip using the Arduino
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I2C Communication using the Arduino (optional)
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Serial port communication with the Raspberry Pi
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Mission accomplished
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Hotshot challenge
4
4. Christmas Light Sequencer
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4. Christmas Light Sequencer
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Mission briefing
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Interface the devices to the Raspberry Pi
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Setting up the digitally addressable RGB matrix
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Interface of an audio device
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Installing the web server
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Interfacing the web server
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Mission accomplished
5
5. Internet of Things Example – An E-mail Alert Water Fountain
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5. Internet of Things Example – An E-mail Alert Water Fountain
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Mission briefing
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Installation of the Flask framework
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Controlling RGB LEDs from a web page
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Setup of the e-mail alerts in the fountain
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Mission accomplished
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Hotshot challenge
6
6. Raspberry Pi as a Personal Assistant
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6. Raspberry Pi as a Personal Assistant
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Mission briefing
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Setting up the e-mail feed parser
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Setting up the parser for reminders and events
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Designing an enclosure design for the personal assistant
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Setting up the assembly for the dish monitor
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Setting up sensors for the key alert system
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Mission accomplished
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Hotshot challenges
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References
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7. Raspberry Pi-based Line Following Robot
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7. Raspberry Pi-based Line Following Robot
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Mission briefing
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Assembly of the Pi Plate for the line following robot
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Sensor selection, interface, and data interpretation
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Implementation of line following logic based on sensor data
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Testing the motor driver circuit
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Preparation of the line following course
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Designing the chassis for the line following robot
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A step-by-step assembly of the robot
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Mission accomplished
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Hotshot challenge
8
8. Connect Four Desktop Game using Raspberry Pi
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8. Connect Four Desktop Game using Raspberry Pi
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Mission briefing
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Hello world example with the pygame
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Getting started with the Connect Four game (UI and sound effects)
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Interfacing game inputs using the PiFace module
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A brief description of the Connect Four Game AI
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Marquee design and control (optional)
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Setup of the switches using a cardboard box
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Mission accomplished
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Hotshot challenge
9
9. The Raspberry Pi-enabled Pet/Wildlife Monitor
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9. The Raspberry Pi-enabled Pet/Wildlife Monitor
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Mission briefing
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Installing and testing the python-twisted framework
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Setting up and testing Spark Core to interact with appliances
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Installing and testing the Google Coder project on the Raspberry Pi
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A brief overview of a bird feeder that triggers a camera
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Mission accomplished
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Hotshot challenge
10
10. Raspberry Pi Personal Health Monitor
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10. Raspberry Pi Personal Health Monitor
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Mission briefing
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Setting up a web server to record health parameters
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A simple exercise tool using the Raspberry Pi
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Setting up an e-mail feed parser to refill a prescription as well as remind the user about an upcoming doctor's appointment
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A simple tool that reminds a person to take his/her pills
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Mission accomplished
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Hotshot challenge
11
11. Home Automation using Raspberry Pi
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11. Home Automation using Raspberry Pi
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Mission briefing
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A simple example that controls limited indoor and outdoor lighting in the evening
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A customary web server example
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Turning on a lawn sprinkler only when there is no rain forecast!
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Mission accomplished
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12. Using a Raspberry Pi for Science and Education
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12. Using a Raspberry Pi for Science and Education
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Mission briefing
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Improving your vocabulary using the Raspberry Pi
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Raspberry Pi and Khan Academy
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Building a science fair exhibit using the Raspberry Pi
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Hotshot challenge
13
13. Tips and Tricks
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13. Tips and Tricks
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Mission briefing
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Setting up Raspberry Pi as a development platform
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Remotely logging in the Raspberry Pi from anywhere on the Internet
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Problems that might be encountered while using Raspberry Pi
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Cool add-on hardware sources developed for the Raspberry Pi platform
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Project ideas that can be implemented over a weekend
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Useful resources for the Raspberry Pi
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Mission accomplished
14
Index
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Index

Setting up the assembly for the dish monitor

In this task, we will set up a monitor over the kitchen sink. We will check whether there are dishes in the sink and send LED alerts to the user. Since we have installed OpenCV already, we will get started with the set up of the monitor.

This task was inspired by a hacker based in London who built a dish detector to alert users of a communal kitchen.

Note

The code sample for this function has been borrowed from the OpenCV Dish Detector project by Tom: http://beagleboard.org/blog/2013-11-26-project-spotlight-dirty-dish-detector/

Prepare for lift off

We will get started by mounting a camera on top of the sink and connecting it to an overhead camera, as shown in the following image:

An overhead camera on top of the sink

Engage thrusters

  1. We will get started by importing the OpenCV module:

    import time
import sys
import cv2.cv as cv

  2. We will initialize the camera to capture frames:

    capture = cv.CaptureFromCAM(0)

  3. After initialization, we will grab a frame for processing...

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