<p>I have a CR-10 with TH3D's most recent firmware on it and an EZABL (Plug &amp; Print Auto Bed Leveling Kit) installed.  My problem is that when I select "Auto Home", the printer ignores the Z-stop switch and keeps trying to lower the extruder, grinding and shuddering until I have to power it off.  I can't seem to figure out what the problem is.</p>

CC BY-SA 4.0
2019-10-03T06:16:48.943Z
Hi Jack and welcome to 3DPrinting.SE! Please explain what you mean by "Z-stop" is that the original switch or the inductive sensor? Also post which changes you made to the firmware to enable the EZABL sensor. As the question is posted now, there is not much information to work with for others to give you an answer.
0scar
CC BY-SA 4.0
2019-10-03T14:20:33.140Z
Did it work before you installed EZABL?  If this is a mechanical Z-stop, have you verified separately that the switch (and the connector on the driver board) is making electrical contact when closed?
Carl Witthoft
<marlin><creality-cr-10><ezabl>
CR-10 Ignoring Z-Stop Switch, Keeps Trying to Lower
Jack Harris
# CR-10 Ignoring Z-Stop Switch, Keeps Trying to Lower

(Asked by: username_0 on 2019-10-02)

I have a CR-10 with TH3D's most recent firmware on it and an EZABL (Plug & Print Auto Bed Leveling Kit) installed. My problem is that when I select "Auto Home", the printer ignores the Z-stop switch and keeps trying to lower the extruder, grinding and shuddering until I have to power it off. I can't seem to figure out what the problem is.

**Tags:** marlin, creality-cr-10, ezabl

> **Comments:**
> **username_1**: Hi username_0 and welcome to 3DPrinting.SE! Please explain what you mean by "Z-stop" is that the original switch or the inductive sensor? Also post which changes you made to the firmware to enable the EZABL sensor. As the question is posted now, there is not much information to work with for others to give you an answer.  
> **username_2**: Did it work before you installed EZABL?  If this is a mechanical Z-stop, have you verified separately that the switch (and the connector on the driver board) is making electrical contact when closed?  

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