Closed-Loop Controller

This Thing represents some of the mechanical and electrical changes needed to implement closed-loop control on a Makerbot Replicator I - class 3D printer. More complete details documenting the method used and the results obtained are available here: https://sites.google.com/site/benweisspublic/projects/imc-closed-loop-control

All the designs were done with respect to the original MakerBot Replicator I CAD files (available [at this Thing](http://www.thingiverse.com/thing:18813)); adjusting to derivative printers is straightforward. If anyone wants to modify the source SolidWorks files, I will post them too upon request.

The electronics posted here are only half the story. Other parts needed are the IMC Master electronics (documented in the [IMC Project](https://sites.google.com/site/benweisspublic/projects/intelligent-motor-controller))

NOTE: This is a proof-of-concept implementation and NOT ready for prime time. I've documented what I've done, but a great deal of refining is n