Tram notifier

Arduino device notifies about when the next tram departs.

First version:

• Print next departure of the station "Eppelheimer Strasse".
• Print periodically.
• Only print departures in the right direction.
• Calculate how much time is left until the next tram departs.
• Show different status before the tram comes. Notification 12-8 minutes before, urgency 8-5 minutes before. Show not-worth-it if there is more than 12 minutes or less than 5 minutes.
• Enable wifi connection (instead of cable connection).
• Attach a segment display to show the minutes until the next tram comes.

Versions

0.1.1

Fix display status after a network connection was interrupted.

0.1.0

Initial version. Displays the status on three (red/yellow/green) LEDs to notify when to leave the house. Many values are hard-coded: led pins, RNV url, tram station and request interval.