I should have been a little less sour in my response. As a DIY project much like the shutter speed tester that has its (deservedly) long thread on this forum, it's nice. Hack a slide projector into a scanning setup. Fine by me; I can still think of easier ways to get pretty much the same (or better) quality scans using a digital camera. But it's creative, and it'll work.
Moreover, I was responding to the hack-a-projector project ('Slidescan'), but the project on their front page (Filmolino Film Scan) is a different concept. It's self-contained, has a more sensible LED light source, uses a stock RPi as the main brains - although there's still some complexity going on (e.g. frame detection) that makes this a bit of an odd in-between solution. I can sort of see what they're getting at as they're focused on reducing scan times and reducing the amount of manual labor in the scanning process. As such, it has merit, for sure.