I was literally screaming with joy when Derek Mellott (you know Derek, he likes Barbeque and time lapse movies) showed me his latest Time Lapse Slider Dolly. Then, I literally fell from my chair when he suggested to share the build with DIYP readers.
Now, every once in a while we have a "dare" tutorial, one that will kill an entire month of weekends (and then some). Those are not for the faint of heart, but the results and satisfaction from completing one of those projects in unbelievable. (see the battlefield pinhole camera for example). It is the same with this project - it is not an easy task, it takes woodmenship, electronics know-how, and plenty of time, but the results are stunning.
(But hey, you know what, even if you just pick up one of the ideas in this post, it would rock. For example, building the collapsible rails idea to be used with the cheapo motor slider puller)
The movie comes first - this should get you motivated - then the instructions. Embrace yourselves.