Some time ago I backed the Syrp Genie (estimated delivery July 2012), but today I learned of the Radian and Astro. Unlike the Radian and Astro, the Genie supports linear motion, but it’s also much more expensive, bigger, and appears to have more complex controls.
Here are the videos for all three projects:
[http://www.kickstarter.com/projects/syrp/genie-motion-control-time-lapse-device/widget/video.html]
[http://www.kickstarter.com/projects/207087339/radian-a-motion-time-lapse-device-for-everyone/widget/video.html]
[http://www.kickstarter.com/projects/1530895202/astro-time-lapse-motion-control/widget/video.html]