14mm Tiny Linear Stepper Motor

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JorgeP
Posts: 8
Joined: Mon Mar 25, 2019 4:05 pm
Location: Montana, USA
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14mm Tiny Linear Stepper Motor

Post by JorgeP »

Here is a tiny linear stepper motor, most likely from a camera focus mechanism. These can be found online in bags of 10, 20, 50, etc. for faily cheap. There are 3 parts: The Case, the Shaft, and the Nut.

I learned how to extrude edges and round off (bevel) edges with this project. Does not have the flex PCB connector, Magnetics, or Coils. I just made it for visualizing the size of the motor for a scale model project out of paper I have been working on, you can guess what it is by the Photos below ("No Disassemble")!

The paper models, seen in the second photo, are 1:87 custom models based on MiniModel.cz 1:100 scale papercraft and will use these motors for steering, maybe also driving since I have 40+ left :) The Daimler Ferret is 100% custom and built from actual repair and service manuals.

I also attached the project file for the Motor.
Motor-Stepper-Linear-Mini-24OhmCoils-3V-5V.png
Motor-Stepper-Linear-Mini-24OhmCoils-3V-5V.png (27.92 KiB) Viewed 3327 times
TinyStepper-01.jpg
TinyStepper-01.jpg (788.3 KiB) Viewed 3327 times
Attachments
Motor-Stepper-Linear-Mini-24OhmCoils-3V-5V.FCStd
(207.18 KiB) Downloaded 85 times
JorgeP
Posts: 8
Joined: Mon Mar 25, 2019 4:05 pm
Location: Montana, USA
Contact:

Re: 14mm Tiny Linear Stepper Motor

Post by JorgeP »

I finaly got around to making a PCB for this motor. I got it running using a Teensy 4.0 and an A4988 stepper driver. The video shows how small this motor realy is. I will probably revert to full stepping mode to have better torque but I don't expect much from something this small. Total motion of the Nut on the shaft is 5mm.

phpBB [video]


I don't talk about it in the video, but I was actualy going to try and use this motor in the 1:87 scale paper model I made of a 1952 Daimler Ferret (used in the Movie Short Circuit) that can be seen in the video behind the black paper that I move to uncover the screen. I will have to scale it up to maybe 1:64 or bigger to insert electronics and motors.
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