LED-shirt v2.0 on its way! Answered
So after thinking about it for a while, I realized that my original Beating Heart T-shirt was a bit.... restrictive... as to what you could display on your glorious torso. As a result, I decided to embark on a journey to make a fully programmable 14X7 LED array display on a t-shit, which I call LED-shirt v2.0! Also, since I was making this portable and re-programmable, I figured that you should be able to go everywhere and still have some nerd "bling", so I included a charlieplexed LED binary clock.
I drew up the schematic on eagle, routed the board, etched it, drilled it, stuffed it, programmed the binary clock, then soldered ALL of the crimp beads onto all 91 LEDs and female header (it's got to be detachable). I tried sewing some of the LEDs on via a sewing machine, but I bought the wrong thickness conductive thread, and the machine kept jamming. Then I tried by hand, and it just takes too long v_v.
(I'm using Leah Buechley's method)
I'm going to order the thinner thread and find someone with a sewing machine they're willing to lend me. Until then, I have this awesome blue binary clock that I can carry around with me!
Oh, it's atmega168-based, runs @ 12MHz, and as of now runs off of 3 AA's, but I have plans to make it LI-ion compatible.
Also, I have to thank Zach for the idea to make the 14X7 matrix - it's really a demi-charlieplexed 7x7 array.
Oh, and if you were wondering, that's an aluminum rod w/ a captive ring next to the battery pack. I love lathes.