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Could this be based off an Arduino-like system?
Maybe.
To indicate the minutes the "clock" will display a different color depending on the minutes... (green if closer to :00 and red if close to :59)
If possible it will include three colors, but we'll see how the charlieplexing goes.
[At this point the outputs are all being used, so charlieplexing is my only option for multiple colors.]
http://i41.tinypic.com/5bebkz.png
So far I've got the green part working.
Now for the charlieplexing!
