Öffimonitor

Display the Wiener Linien timetable for nearby bus/tram/subway lines on a screen in the Metalab Hauptraum.

Written in Javascript for use on a Raspberry Pi in a CSS3 capable browser in Kiosk mode.

Usage

1. Run npm install
2. Move server/settings.example.js to server/settings.js and add your API key and change the listen port and other settings.
3. Change the walktimes in site/settings.js according to your needs (you can also choose to use a local JSON file as input here for client side testing)
4. Run node server/httpd.js
5. Open Öffimonitor in a browser of your choice.

Happy hacking!

Weather forecast

See settings.example.js and add weather and forecast api_urls:

weather: 'http://api.openweathermap.org/data/2.5/weather?id=CITY_ID&appid=API_KEY&units=metric',
forecast: 'http://api.openweathermap.org/data/2.5/forecast?id=CITY_ID&appid=API_KEY&units=metric'

Parameter	where to get it
API_KEY	register at www.openweathermap.org for a free API key and enter this in settings.js
CITY_ID	Go to www.openweathermap.org and search for your city, you will be redirected to a URL containing the City ID, e.g. http://openweathermap.org/city/2761369 for Vienna, use 2761369 as CITY_ID in your api_urls

If either of the two URLs is missing, weather forecast will be disabled.

TODO: Weather forecast is currently styled using a hardcoded css link, if the graphic seems to be not visible check the referenced .css in weather.svg

Theme support

Enter the name of the appropriate folder for the css and assets in the server/settings.js file. It should be located under ````site/themes```. Contained in the repository are two themes:

• metalab: Design as used by metalab
• nook: Simplified design for use on a nook simple touch eInk Reader, black and white only

Debugging

Öffimonitor by default logs HTTP requests but no further messages while running. It uses https://github.com/visionmedia/debug for logging. The DEBUG environment variable is used to enable these based on space or comma-delimited names. Here are some examples:

DEBUG=server:*
DEBUG=*
DEBUG=server:httpd server:api

Save debug output to a file

You can save all debug statements to a file by piping them. Example:

$ DEBUG_FD=3 server/httpd.js 3> debug.log

Start from systemd

(Taken from https://rocketeer.be/articles/deploying-node-js-with-systemd/)

Copy the provided script init-script/oeffimonitor.service to /etc/systemd/system/ and adjust paths and user in the script. Then the Öffimonitor can be started using the systemd:

# systemctl start oeffimonitor

Systemd will monitor the node process and restart the server as appropriate