Has there been a gaping R2-D2-shaped hole in your gadget life ever since the Motorola Droid 2 R2-D2 Edition bowed out? The good crew at Instructables knows your plight and has designed the R2-D2 Dark Roast Edition to give your astromech desires an almost literal jolt of energy. The team's do-it-yourself project modifies a BUNN industrial coffee maker -- no slow-drip home unit here -- with a float valve and a generous mix of aluminum, brass, copper and steel welded on top. If you're particularly ambitiou