Knocked up in about an hour, using a Raspberry Pi, breakout board, a few resistors, and some LEDs. Code was written in MS visual studio (c#), and run on Unix using mono. Live bus data is pulled from the TFL API every 15 seconds.
LEDs indicates the following:
1) data is live
2) bus delay detected
3) bus due in less than 15 min
4) bus due in less than 10 min
5) bus due in 5, 4, 3, 2, 1 min
6) bus due now (go now! or wait for the next one)
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