Motorized camera sliders can really improve the quality of your videos and time-lapses, but they're also rather expensive. With a little bit of savvy, however, you can build your own relatively cheaply and in just a few hours by following this great tutorial.
If you're a nerd like me, you'll find this project immensely satisfying. For about $75 and an afternoon of your time, you can create your own motorized camera slider with 15 distinct speeds ranging from seconds to multiple hours (or whatever you care to program). If you've done any work with an Arduino before, it's a pretty straightforward project; if not, it's a great way to get your feet wet. Camera sliders are a fantastic way to add motion to your work that can take a static shot and create a more compelling experience for the viewer, making them one of those pieces of equipment that instantly up the caliber of your work.
A list of all of the parts you'll need as well as full written instructions with accompanying images can be found here. If you're not comfortable with building your own, a good slider is still a worthwhile investment. Grab your own here.
[via Imaging Resource]