There has gotta be There has gotta be a DIY version of this online somewhere! As a mather of fact, I think I remember one. Somewhere on Makezine probably.
There’s loads of software out there for stitching photos together into larger panoramas, Adobe photoshop/elements does it. I think Corel does it too. I’m sure I’ve seen references to free downloadable packages. IIRC Microsoft (or perhaps Google) has an beta thingy on the web that stitches together all the geo-tagged photos from flickr or something to create 3D pictures of popoular locations.
CharmedLabs This is the other product from CharmedLabs, who produce the qwerk robotics board I’m using… I wish I’d signed up for the gigapan beta when I had the chance!