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A comment on Jello 3D Printer (2013). Parent comment

Re:Jello 3D Printer (2013) by amelius on Thursday March 18, 2021 @06:57AM (#26501399)
Wow. Makes me wonder how the head could maintain its precision with so much mechanical hammering.
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Re:Jello 3D Printer (2013) by londons_explore on Thursday March 18, 2021 @07:52AM (#26501699)
The endstop can be designed with springyness.

Then the process is "move towards the endstop", then "switch off the motor current, if we are pushing against the endstop spring, then we'll be pushed back a step". Repeat this process 40 times.

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Re:Jello 3D Printer (2013) by amelius on Thursday March 18, 2021 @08:02AM (#26501762)
Nice idea. I guess you can also measure from the coil current that the motor is being stopped or pushed back.
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Re:Jello 3D Printer (2013) by dekhn on Thursday March 18, 2021 @09:38AM (#26502545)
Yup, and some modern steppers have this: https://github.com/bdring/Grbl_Esp32/wiki/StallGuard-Setup-a...
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