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Parametric rotary encoder

by Homunculus Sep 25, 2013
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Hey, this is really nice! Pretty much just what I was looking for, except... I'm using the resulting wheel on a motor shaft that is "flatted" on two sides. Do you (or anyone?) know how this could be modified to accept a parameter for "width of flat" of the shaft? I don't know SCAD, so it would be a big learning curve to figure that out, I'm sure!
Also -- I intended to use this wheel with an OPB615 IR LED/Sensor. I discovered that, having printed it with PLA, the PLA is TRANSPARENT TO IR! DOH!!! I tested the sensor with a piece of ABS, and it worked fine, but would not work with PLA! So, I decided to salvage my print by spraying the face of the encoder wheel with silver metallic paint! Voila! Problem solved!