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Raspberry Pi Blueprints

You're reading from   Raspberry Pi Blueprints Design and build your own hardware projects that interact with the real world using the Raspberry Pi

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Product type Paperback
Published in Mar 2015
Publisher
ISBN-13 9781784392901
Length 284 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (12) Chapters Close

Preface 1. Raspberry Pi Pirate Radio FREE CHAPTER 2. Portable Speaker System 3. Mini Retro Arcade Cabinet 4. GPS-enabled Time-lapse Recorder 5. Home Theater PC 6. Outdoor Weather Station 7. Home Security System 8. Remote-operated Robotic Arm 9. Magic Mirror 10. Bottle Xylophone Index

The web application


The web application we will use for the mirror is essentially a framework built using Flask, which provides a common interface for individual widgets displayed on the mirror. In order to get the desired effect where the widgets are visible through the mirror, the page must have a black background with white text and graphics. For best results, the text should be as large as possible so that it allows maximum light to pass through the mirror's surface.

Developing a new widget

Each type of widget that can be shown on the mirror is comprised of four files:

  • A server-side (Python) script file (widgets/CLASSNAME.py)

  • A Jinja-style template file (templates/widgets/CLASSNAME.html)

  • A CSS file (static/widgets/CLASSNAME/style.css)

  • A client-side (JS/jQuery) script file (static/widgets/CLASSNAME/script.js)

Here, CLASSNAME is the class name given to the widget that is used in the widget configuration files to create an instance of the widget on the mirror display. Templates for these files...

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