[BUG] Inductive probe and G28 X Y causes Z to move to absolute Z5.01 first #502

New Issue

2023-12-03T07:59:58-06:00

mlewis-everley commented

2023-12-03 07:59:58 -06:00

(Migrated from github.com)

Have you read all Wiki articles in cluding the FAQ? YES

Do you want to ask a question? Are you looking for support? Not sure?

Bug Description

I am not sure if this is a bug, or if I have mucked something up in my config, I have installed an inductive probe on my i3 Mega's and they are working perfectly except that now when you issue G28 X Y or G28 X or G28 Y, the Z axis moves to absolute 5.01 prior to homing the X &/or Y.

I cannot see anything obvious in this fork that would cause this behavior. I have added similar features to vanilla marlin for a different printer and am not getting this issue so possibly this is a bug?

Happy to submit a PR for this issue, but at the moment I am stumped as to what might be causing it. I have not used the BLTouch version of this firmware, so not sure if that behaves the same way?

My fork is: https://github.com/mlewis-everley/Marlin-2-0-x-Anycubic-i3-MEGA-S

Steps to Reproduce

Install custom probe.
Compile and install this firmware.
Move the Z up (EG: G1 Z100).
Turn off steppers.
Home XY G28 X Y.
Z will now move to Z5.01 BEFORE homing X and Y.

Have you read all Wiki articles in cluding the FAQ? YES Do you want to ask a question? Are you looking for support? Not sure? ### Bug Description I am not sure if this is a bug, or if I have mucked something up in my config, I have installed an inductive probe on my i3 Mega's and they are working perfectly except that now when you issue `G28 X Y` or `G28 X` or `G28 Y`, the Z axis moves to absolute 5.01 prior to homing the X &/or Y. I cannot see anything obvious in this fork that would cause this behavior. I have added similar features to vanilla marlin for a different printer and am not getting this issue so possibly this is a bug? Happy to submit a PR for this issue, but at the moment I am stumped as to what might be causing it. I have not used the BLTouch version of this firmware, so not sure if that behaves the same way? My fork is: https://github.com/mlewis-everley/Marlin-2-0-x-Anycubic-i3-MEGA-S ### Steps to Reproduce 1. Install custom probe. 2. Compile and install this firmware. 3. Move the Z up (EG: `G1 Z100`). 4. Turn off steppers. 5. Home XY `G28 X Y`. 6. Z will now move to Z5.01 BEFORE homing X and Y.

knutwurst commented

2023-12-14 08:38:54 -06:00

(Migrated from github.com)

That's strange... but I'll take al look :)

mlewis-everley commented

2023-12-18 09:13:09 -06:00

(Migrated from github.com)

Thank you, I have done a little bit more testing my end. It appears this only happens after you run a G29.

Prior to this, homing works as expected, if I run G28 X or G28 Y then the print head moves up 10mm and then performs a home.

After running G29, the above issues then occur.

Thank you, I have done a little bit more testing my end. It appears this only happens after you run a `G29`. Prior to this, homing works as expected, if I run `G28 X` or `G28 Y` then the print head moves up 10mm and then performs a home. After running `G29`, the above issues then occur.

knutwurst commented

2024-06-05 12:47:27 -05:00

(Migrated from github.com)

Does this bug still exist? I cannot reproduce the error in the current version 1.5.4. :/

github-actions[bot] commented

2025-04-01 21:00:54 -05:00

(Migrated from github.com)

This issue is stale because it has been open 30 days with no activity. Remove stale label / comment or this will be closed in 5 days.

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Reference: wp/Marlin-2-0-x-Anycubic-i3-MEGA-S#502

[BUG] Inductive probe and G28 X Y causes Z to move to absolute Z5.01 first #502

Bug Description

Steps to Reproduce

[BUG] Inductive probe and `G28 X Y` causes Z to move to absolute Z5.01 first #502