A simple camera slider for timelapse or tracking shots with a video camera.
The linear bearing is the open source MakerSlide (makerslide.com/).
Control provided by a Lego Mindstorms NXT brick and a single motor. The Technic axles are almost 5mm in diameter and with a wrap or two of tape, fit perfectly on the pulley for the drive belt.
This setup is just temporary until I find time to get an Arduino and stepper motor controller hooked up.
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