Here are some pages that talk about using the data logging capability in Lego Mindstorms NXT 2
http://thenxtstep.blogspot.com/2009/01/comparison-data-logging-with-nxt-g-20.html
http://www.education.rec.ri.cmu.edu/previews/nxt_products/science_data_logging/sdl_print_preview.htm
The stuff you can do with lego never ceases to amaze me. The first surprize I got was when a kid made a functioning dot matrix printer which could be attached to the pc! I think lego is a great example of large scale molecular modeling which can be made into anything to serve almost any purpose.