So I got a bit excited (after not doing anything because of finals/winter break) and just started putting things together and lo and behold it didn't work at all. This project won't be done before the deadline, but I think it's cool enough to keep working on it. I'd rather not embarrass myself by posting pictures of my horrible work. Either way it's since been dismantled and hopefully my salvage job works out and I can actually start prototyping on a breadboard (like I should have in the first place). So stay tuned folks.

Edit: I think I'll ditch the pro-trinket in favor of the Teensy 2.0 because it has more available interrupt pins and would allow for more accurate measurements.