FSR (Force Sensitive Resistor) as end stops?
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I have some force sensitive resistors, and a y axis with two solid parallel contact surfaces that are effectively a hard stop. I've been wondering if I could use one of said resistors for the end stop to accomplish something like the analog z-probe does with it's trigger point and trigger the stop when the axis is pressed hard enough against the hard stop. I'm imagining behavior much like sensor-less homing but more (?) reliable/accurate.
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Sounds possible.
Why not just test it?
Configure one as an axis endstop. Center that axis and home it very slowly. Press the FSR and determine if it stops the movment and how much force is needed.
As is done with "sensor-less homing" you will want to reduce the stepper current when you actually decide to test it reaching the end of travel and pressing on the FSR.
Frederick
