Bead Chain Gear Drivetrain and Enclosure (fully parametric)
by adgaudio, published
I'm building an automatic window blind system to raise and lower window blinds (in response to user and sensor input).
The openscad code is fully parametric and designed to be both customized and modified, and easy to install.
This system generally should work for situations where a bead chain needs to be moved, but is fairly loose and prone to skipping.
IN PROGRESS (need to build on wall mounts, which aren't shown here, but the components available for download are working perfectly!)
The scad code (see github link below) is fully parametric. It's also namespaced, so it should be fairly simple to manipulate, and do things like use different gears or change the bolt size.
Check out the latest openscad code on github:
1 x m8 30mm bolt + nut
6 m8 washers
1 x 608zz bearing (or other same sized bearing)
2 x m3 20mm bolts + nuts + washers
2 x m3 10mm bolts + nuts
1 x stepper motor (http://www.allelectronics.com/make-a-store/item/SMT-108/STEPPER-MOTOR-6-WIRE/1.html)