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Robot actuator for 28mm stepper — image 1
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Robot actuator for 28mm stepper

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This is a remix of LoboCNC's robot actuators, and this one replaces the 35mm motor for the 40P gearbox with a much…

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Model information

Category
Electronics
License
Creative Commons — Attribution

This is a remix of LoboCNC's robot actuators, and this one replaces the 35mm motor for the 40P gearbox with a much cheaper 28mm one.

The original gearbox used a 35pm048s8-08001 tin can motor, but it was expensive and hard to find. So, instead, I modified the design to use the much cheaper 28byj-48 motor. Secure the motor using whatever you need to use, whether it be screws or super glue.

Note: You may need to cut out part of the arm part, depending on whether the motor sticks out or not.

Print the PlanetCluster pieces at 100% scale to reduce backlash and increase stress, or print them at 98% to loosen them, but this will increase backlash.

What to print:

1 - Ring48-28mm

1 - Body28mm

1 - Sun15_28mm

1 - Sun18-28mm

3 - PlanetCluster28mm

Print Settings

Printer Brand:

Creality

Printer:

Ender 3

Rafts:

No

Supports:

No

Resolution:

0.2

Infill:

20%

Filament: Prusament PC Black


Notes:

Any material does the trick.
Be sure to print high-quality.

NOTE: Print the PlanetCluster part at 100% scale for an anti-backlash gear, but this can sometimes lock up the gearbox. The gears work much better with the PlanetCluster part printed at 98% scale.

Category: Electronics

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