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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

Troubleshooting

This section details some of the common issues you may encounter while building this project and the steps to be taken to resolve them.

For issues not listed here, check either the log files in the /home/pi directory (and its subdirectories) or the Chromium (or Google Chrome) developer console.

The web application fails with the 500 Internal Server Error

This can be caused by a variety of reasons. More information as to the cause of the problem will be available in the /home/pi/mirror_webapp/mirror_app.log log file.

Some of the common issues that are likely to cause this are:

  • The lack of Internet connection may cause failure to update widgets, such as weather and RSSTicker
  • Errors in widget configuration files can cause failure of the server-side Python scripting
  • Errors in the widget code itself will also cause this issue; although this is less likely

The display does not work

There can be issues with the usage of certain HDMI to VGA adapters with the Pi. Edit the /boot/config.txt...

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