24
Jul
11

lifter prototype

So I made a quick prototype of a lifter, after much thought and reading about the old droidstuff lifter. I’m using a cheap brushed motor from all electronics, a regular 1/4-20 threaded rod, and a bunch of scrap aluminum from my garage. The only interesting part really is the shaft coupler, which I ordered from servocity. The screw drive uses a square nut, which engages the lifter bracket using a kind of clip i bent from scrap 1.16″ aluminum sheet, and the periscope bracket itself is drilled and bent from 1/8″ aluminum scrap. The rest is angle, the vertical being 1/16″ thick 3/4×3/4 and the base being 1/8″ thick 1.25×1.25

I got these miniature drawer slides at my local ace hardware, the drawback is I only get like 4.5″ of travel out of this, whereas the droidstuff lifter did a little over 6″. I thick it will be just barely enough, at least I hope so. I have diodes and limit switches I have not added yet, which will limit the travel and make sure I don’t stall the motor at each end.

heres a few more pics

in that second one you can see the crappy temporary motor mount I made. since the motor sleeve thingy is only anchored on one side it allows the motor to vibrate a lot.



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