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Tom Lee made this transit alert frame using a web script and an Arduino board. from the DCist:

Tom Lee configured D.C.’s metro schedule to alert him to when the next train will be available from his house; all packaged in a nifty frame. “So if there’s enough time left to catch the train, the backlight is amber. If there isn’t, it’s red. And if it’s the 60 seconds in between those two periods — the time when I really need to get going — both lights are illuminated.

Now if New York can just get its train timing worked out, there’d really be a trend going!

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(photo by Adam Lewensohn)