Why are max endstops disabled for CoreXY in Marlin? I was reading through the Marlin source to try and understand how it works (I'm currently tinkering with CoreXZ support), and came across the endstop handling code in stepper.cpp. Even though MAX_ENDSTOPS are force-disabled for CoreXY, it seems like it would be trivial to enable them with an additional "if else" statement--almost too trivial. Is there any reason why this has not been done before? I'd post code snippets, but the code formatting doesn't seem to be working properly. https://reprap.org/forum/read.php?146,395293,395293#msg-395293 Mon, 17 Aug 2026 22:58:27 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?146,395293,590148#msg-590148 Re: Why are max endstops disabled for CoreXY in Marlin? https://reprap.org/forum/read.php?146,395293,590148#msg-590148
I am using Marlin firmware for a CoreXY machine using 7 endstops:

X axis - 1 x Min and 1 x Max endstops
Y axis -1 x Min and 1 x Max endstops
Z axis - 2 x Min and 1 x Max endstops (using 2 stepper motors for z axis, I have the Marlin auto syncing the 2 stepper motors when homing to Min position (Using two Min endstops ,e.g. Z1 Min & Z2 Min ).



Only issue I have is there a set time frame for homing and syncing the Z axis regardless of the position of the Z axis platform/bed. Not a big major but still would be good not to have it.]]> RepRot Firmware - mainstream and related support Sat, 28 Nov 2015 01:27:57 -0500 https://reprap.org/forum/read.php?146,395293,589769#msg-589769 Re: Why are max endstops disabled for CoreXY in Marlin? https://reprap.org/forum/read.php?146,395293,589769#msg-589769 Or commit it and free your endstop after each homing.
Like:
G28 X
G1 X100; free the endstop
G28 Y
G1 Y100; free the endstop
G28 Z; or do what you want.]]> Wurstnase Firmware - mainstream and related support Fri, 27 Nov 2015 07:03:28 -0500 https://reprap.org/forum/read.php?146,395293,589642#msg-589642 Re: Why are max endstops disabled for CoreXY in Marlin? https://reprap.org/forum/read.php?146,395293,589642#msg-589642 alexgibson3d Firmware - mainstream and related support Thu, 26 Nov 2015 22:36:52 -0500 https://reprap.org/forum/read.php?146,395293,395293#msg-395293 Why are max endstops disabled for CoreXY in Marlin? https://reprap.org/forum/read.php?146,395293,395293#msg-395293 too trivial. Is there any reason why this has not been done before?

I'd post code snippets, but the code formatting doesn't seem to be working properly.]]> NathanaelXYZ Firmware - mainstream and related support Fri, 15 Aug 2014 14:24:48 -0400