That sounds like a really cool project!
I just really need to be able to control a tilt (housing a cannon) and a stepper (housing laser pointer)
In the end my goal is to hook everything up and make simple C++ software program, and user some physics so that
i have a super accurate, (distance) self calculating cannon.
I thought it would be a fun weekend project, but it appears to be much harder than just that (and expensive).
But thanks for your input,