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While waiting for BTT technical support to reply to my email, I thought I would ask this community for help.

I own an Ender 3 Pro, upgraded 2 years ago with BTT SKR Mini E3 V2.0 + TFT35 E3 V3.0. Firmware MARLIN BUGFIX-2.0.x of 23/03/2020. (no change).

Everything OK, a significant upgrade from stock hardware.

Today I installed the second Z-axis (with its stepper motor), connecting it to the output (ZBM) of the motherboard.

The Stepper works fine, but all the limit switches (x, y, z) don't stop the stepper.

The end stops responding correctly to M119 ('open' state), when pressed manually they change to the 'triggered' state. But they don't stop the relative axis stepper motor when I perform (i.e.) a homing.

Can you suggest me a solution?

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  • $\begingroup$ Hi Jo and welcome to SE.3DP! :-) $\endgroup$
    – Greenonline
    Jul 10 at 11:28
  • $\begingroup$ Hi Greenonline, thanks $\endgroup$
    – Jo Zambon
    Jul 10 at 13:01

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I performed a factory reset and the end-stop situation has normalized.

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  • $\begingroup$ Thanks for answering your own question! Please accept the answer 48 hours after you posted it so that it has an accepted answer. Thanks! $\endgroup$
    – 0scar
    Jul 12 at 10:57

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