String Potentiometer fixed dimensions

by TronicGr, published

String Potentiometer fixed dimensions by TronicGr Nov 29, 2016
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1697Views 208Downloads Found in Electronics


I corrected the dimensions of the STL files provided by andymark for a 3D printed string potentiometer.
Its in mm now.

The original STL files came from here:

I used a different 10-turn potentiometer, a AMM20B5A1CLASL380 that is contactless hall-effect sensor with rotation life 50 million shaft revolutions.
But you can always use simple wirewound potentiometer like this one here:

For the spring I used one from cheap ID badge holders like this one:

See a video of it in action:

A new video with better print and some tips here: https://youtu.be/NsgG6o2HFr4


Print Settings


Wanhao i3 v2.2










Printed on Carbon PLA

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Really bad ass! I could see this being really perfect for fine adjustments since it seems to be very "Organic" feeling. Everyone has played with those key things a million times..

I could see this being used by people like crane operators for fine x/y adjustments! Just have one pull for each direction on the x/y axis. When you pull on it it moves a set amount given the amount of travel, and then doesn't move back when you let go. That way if you needed to move a direction more than one full pull would allow, you could real back in and pull again. Just have one for each direction... (This would all be in addition to the normal controls..)

Anyways, Really frikin awesome! There are so many possibilities! You could even use this with three linear actuators in a delta configuration and three of these for precision tool control.. So cool!

Nice work, do you happen to know if this can be use to "close-loop" a stepper motor position?


I don't see why not. I use these for linear actuators:

See my blog