Kindle Display

NOTE: This Article is not yet finished! This note will be removed once i think it's okay ;)
As long as I'm working on it, this information will be shown.

This article shows how to configure a Amazon Kindle eBook-Reader as a information display for fhem. Use this manual at your own risk. Jailbreaking a Kindle is quite easy but there is no guarantee for breaking the system.

All of the information shown below is collected from the fhem-forum fhem-Forum. Many thanks to everybody who participated on the development of this information to get it done.Special thanks to "alex" and "stefan" from the board. Further information is from the mobileread board.

Hardware requirements

Kindle Touch / Paperwhite / Paperwhite 2

You can use Kindle Touch / Paperwhite / Paperwhite 2 without any limitations.

Kindle 4

For setting this up on the Kindle 4 (with the 5-way button) you need some more configuration work but it's also working. Addidional tasks for this version are shown down below.

Prerequisites

fhem and server configuration

Server configuration

Not sure if still needed, but just for in case it is, install imagemagick on your linux system.

apt-get install imagemagick

That's it :)

fhem configuration

First you need a svg-template. You can find one in the first posting on the fhem-Forum thread. In the template just replace the data with some placeholder you like. Later this placeholder is found via a regular expression and replaced by your data.
For example, you can set XYZ at the place where the first temperature should be shown and ABC for the first humidity value.
If you want to edit the template you can use the free software [www.inkscape.org/de/ Inkscape]. For more information about generating SVGs for fhem please refer to this article Icons. Most important information is to save the SVG as a "normal SVG" and not as an inkscape SVG.
For the Kindle Paperwhite the resolution of the SVG must be 758 x 1024 for the Kindle 4 version use 600x800. This is mandatory. Wrong scaled images won't be displayed on the Kindle.
Copy the Kindle_Template.svg to /opt/fhem/www/images/.

Modifying the Kindle

To prevent from error messages like "your Kindle is no longer registered as a test Kindle..." please make sure your Kindle is connected to a valid Amazon Account.
We need to download some software to install it on the Kindle.
Please download it from Mobileread Forums

• Kindle Jailbreak Mobileread Forums
• MKK Mobileread Kindlet Kit Mobileread Forums
• KUAL Mobileread Forums
• Screensavers Hack Mobileread Forums
• OnlineScreenSaver Mobileread Forums

• for Kindle 4 only: USBNETWORK also Mobileread Forums

Always use the newest version and look for one who fits to your Kindle (e.G. K4).

Jailbreaking the Kindle

Don't worry. This sounds more hard and dangerous than it is in fact. It's just a few steps to have full access to your Kindle.

Kindle 4 additional tasks

coming soon :)