Auto Sentry Turret

thingiverse

I had to design a turret for an upcoming project, and here's what I came up with. All STL files are included, along with a Blender file if you need to make any modifications to fit your own designs. When I build it, I'll post some pictures. Currently, I'm running low on plastic - we all know how that goes. This turret uses two 28BYJ-48 motors from eBay, which I'm waiting for to arrive from China. Some notes: the scale of each object really depends on your slicing program. In Slic3r, I scale the parts to 10000%, while in Cura, I have to scale them to 0.1 - these are the only two slicers I've worked with. To assemble this correctly, you'll need three ABEC-3 ball bearings: two for the Y pivot and one for the X rotator. That's why those holes are so big - they're sized to press-fit the bearings in place. I used motor brackets from a different project, but haven't printed them yet, so I don't know how well they'll fit. I was inspired by the base design from this thing on Thingiverse: http://www.thingiverse.com/thing:953753. The gears are from the Involute Gear script: http://www.thingiverse.com/thing:5505. Unfortunately, gear meshing might be a bit rough because I haven't figured out the best way to determine it in Blender yet - any suggestions would be appreciated!