Skip to content
master
Switch branches/tags
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
src
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Home Assistant Kindle Screensaver

This tool can be used to display an overview of your Home Assistant instance on e.g. a jailbroken Kindle device.

If you're looking for a way to render a Lovelace view, see my newer project hass-lovelace-kindle-screensaver.

Demo

Demo Screenshot

Features

It displays the current temperature and renders the history of the last 24hrs and the forecast of a weather component in a graph.

You might have to get used to the visualization, but the intention was to have the there values (history, now, forecast) in one single diagram, as this allows a comparison of the values. You can then ask yourself whether you can wear the same like yesterday or dress warmer or cooler.

Every minute, an image is generated from a website which is rendered by react. This image is converted into a format, which the Kindle e-ink screens can display. The device can then download the image and display it.

Usage

You may simple set up the sibbl/hass-kindle-screensaver docker container. It runs the server on port 5000 and can be configured using the following environment variables:

  • HA_HOST=https://your-hass-instance.com
  • HA_PORT=443
  • HA_TOKEN=eyJ0... (you need to create this token in Home Assistant first)
  • HA_ENTITY_TEMPERATURE=sensor.outdoor_temperature (state of this entity is displayed as current temperature)
  • HA_ENTITY_WEATHER=weather.openweathermap (temperature and forecast attributes of this entity are used in the graph)
  • HA_ENTITY_BATTERY=input_number.kindle_battery (optional input_number entity which is updated with the battery level, see details below)
  • MOMENT_TIMEZONE=Europe/London (used for date/time calculations)
  • MOMENT_LANGUAGE=en-US (used for date/time formatting)

You may also simply use the docker-compose.yml file inside this repository, configure everything in there and run docker-compose up.

Optional: battery level entity

I'm running my kindle without power supply and thus need to charge it about once a month. To have the battery level available in Home Assistant and let me notify about a low battery level, you can do the following.

  1. Create a new input_number entity using the Home Assistant settings page.
  2. Configure this entity's name in the HA_ENTITY_BATTERY environment variable.
  3. Modify the following lines in the Kindle Online Screensaver plugin's bin/update.sh (absolute path on device should be /mnt/us/extensions/onlinescreensaver/bin/update.sh):
...
if [ 1 -eq $CONNECTED ]; then
-     if wget -q $IMAGE_URI -O $TMPFILE; then
+     batt=`powerd_test -s | awk -F: '/Battery Level/ {print substr($2, 0, length($2)-1) - 0}'`
+     if wget -q "$IMAGE_URI?battery=$batt" -O $TMPFILE; then
        mv $TMPFILE $SCREENSAVERFILE
        logger "Screen saver image updated"
...

About

This server generates a png with content fetched from Home Assistant, which can be displayed on a Kindle device which has the Online Screensaver plugin installed.

Resources

Releases

No releases published

Packages

No packages published