Kindle Status Display
+----+ updates every X min +--------+
| | ------------------> | |
| | wifi | |
| | <------------------ | |
+----+ png greyscale +--------+
hacked local
kindle webserver
Setup
Kindle
SSH Access
In order to install the scripts onto your kindle you need to get root ssh access via usb. The mobileread forum and wiki are a great source on how to perform the jailbreak, install usb networking and KUAL for easiely enabling/disabling ssh access. So far we've only managed to make it work on the Kindle 4.
Update Script
connect you Kindle via usb and ssh into it
ssh root@192.168.15.244
make the Kindle file system writable
mntroot rw
create the init and update scripts according to the files in the kindle directory.
vi /mnt/base-us/RUNME.sh
vi /mnt/base-us/display-weather.sh
add the update script to /etc/crontab/root
*/30 5-22 * * * /mnt/us/display-weather.sh
execute the init script to disable all unneeded tasks and trigger an the first render
sh /mnt/base-us/RUNME.sh
Server
The code in this repository is my personal setup which also pulls in data from the heating and ventilation system. Therefore I recommend forking this repository and modify the datasources and visual representation as you need it.
You need to have node.js/npm, phantomjs and pngcrush installed on the server machine. I'm using a RaspberryPI for this.
Clone the repository
git clone git@github.com:username/kindle-display.git kindle-display
cd kindle-display
Create your own config file. Adjust the list of plugins that should be used to provide data for the template. You can find the implementation in the lib directory.
cp config_sample.yaml config.yaml
vi config.yaml
Adjust template and styling. You probably want to delete much of my stuff here to get it to work.
vi views/index.jade
vi public/stylesheets/style.styl
Start the server and open your browser at http://localhost:3000/
npm start
Now you need to create a png file that can be served for the kindle.
./generate_png.sh
Now you should find a 600x800 grayscale png file in your public folder which is accessibale via http://localhost:3000/weather_bw.png.
Setup a cronjob that regularly executes the generate_png script.
Plugins
...
Todos
Power Management: Right now the Kindle battery lasts for 2-3 days, depending on the refresh interval. I think here is room for improvement. There are a few options to change the Kindles power management settings, but we haven't found the perfect one yet.
Credits
Matthew Petroff
hahabird