I know someone who wrote a small app to control a LIFX globe in a similar fashion. When the next tram was 5-10 minutes away, it would light up green indicating

I know someone who wrote a small app to control a LIFX globe in a similar fashion. When the next tram was 5-10 minutes away, it would light up green indicating now would be a good time to walk out the door. (data fetched from tramtracker.com.au)