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InMoov LowArmSideV1 for Square Potentiometer

by gestalt73, published

InMoov LowArmSideV1 for Square Potentiometer by gestalt73 Nov 7, 2014

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2786Views 620Downloads Found in Robotics

Summary

A Quick Hack to support the newer HiTec servos with the square potentiometer.
The potentiometer fits into the recess snugly.

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Tried printing it, for some reason my printer software crashes everytime i start printng this part, the original prints fine, which is really weird

Hey Gael,

Hmm,I haven't used MRL, so I can 't comment on the scripts, however the position of the pot allows for 0 degree rotation to be fully extended with a minpulse value of 550, and maxpulse value of 2450 (which are my default values to approach 180 degrees of movement with my servos).

The usable travel in that configuration is about 90 degrees. I think there are an additional 5 degrees of rotation available before the pot hits it's physical limit in the 0 degree position.

Unfortunately with square pots, there's really no room to make adjustments by twisting the pot while it's seated.

I positioned the recess to be perpendicular and centered in relation to the two original screw mounting holes. It would be trivial to adjust the angle further if that's what you need for MRL.

Usefull modification!
Is the position of the square potentiometer in the correct rotation angle to give the same position feedback as the round potentiometer?
In another words, will a default script give exactly the same arm angles as with the round pot.

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