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Pan Tilt Mechanism for 28BYJ-48 Motors

by zimirken, published

Pan Tilt Mechanism for 28BYJ-48 Motors by zimirken Apr 6, 2015
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Summary

Here is a pan tilt mechanism for 28BYJ-48 motors. It uses internal gearing. It is super duper easy to print.

The x axis gearing is 1:6.3
The y axis gearing is 1:4

This is a work in progress so expect more revisions as I work my way towards an ideal design for a heliostat.

Speaking of heliostats, included is a mounting bracket for a mirror or other reflector with M6 holes.

Note the pictures do not show the limit switches, as I am waiting for the M2.5 screws to arrive.

Instructions

VERY IMPORTANT: I did not re-orient the stl files, so you will need to rotate them using whatever software you choose. I use cura, but all the parts can be rotated for no overhangs.

Also, if you are actually trying to move something with weight, I recommend that you overvolt the motors as they have very little torque at 5 volts. Just remember to turn them off after they move, otherwise they will overheat and melt the shaft slot in the gears.

You will need:
2x 28BYJ-48 motors
some M3 flathead screws (~10mm)
some M3 socket head screws (10-20mm)
some M3 nuts
1x 608 bearing
an M8 bolt and nut
2x 609 bearings
1/4" square rod
2x microswitches, 9.5mm spacing, 2.5mm holes
4x M2.5 screws for mounting the microswitches
grease (vaseline or lithium grease)
oh and 1 of all the parts

If you have trouble figuring out which small gear is which, the two gearsets have different helix angles so only one of the little gears will make a nice parallel mesh with a particular large gear.

Otherwise there are very few parts and should be pretty obvious to assemble.

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Hi !
Can you provide the source files ?
I like your design but I'd like to use only 608 bearing and replace the square rod by a 8mm round.

Sincerely
Max

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