Quote:
Originally Posted by Max Boord
We 3d printed an adapter and housing to connect a tape measure to a 10 turn potentiometer as our lift has around 60 inches of travel. Total cost: around 1/4th of an encoder. We also could not use an encoder easily because of our gearbox configuration.
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We managed without a 3-d printer. We used a knob from radio shack as a hub to connect the tape measure reel to the potentiometer. We drilled a hole in the top of the knob, and ran the shaft backwards into the ferrule. We attached the "bottom face" of the knob to the tape measure reel using plastic model glue. The hardest part was winding the spring back up. I posted some preliminary pics
here back in February.