Over a thousand years from now, I think this will become a tradition among the flying robots. They'll perform this every year around this date. They'll feel compelled to do it, they'll celebrate it as part of the "Death To Humans" festival, and yet they won't know why they do it.
THA SUGAH RAIN - 2012-02-29 Not much going on at UPenn these days except a whole bunch of awesome.
Gojira1000 - 2012-02-29 5 for useless application of cool manhack technologies
godot - 2012-02-29 The curious hacker can look at the maths and implementation:
Looks like all the proprietary work by the group is in MATLAB. These quads and their motion capture system are commercially available: www.asctec.de www.vicon.com