[3.7.0-RC1] Extruder crash into X Endstop before Mesh Leveling

[Nippylicious]

do you guys have this behaivour?

1. first the Y Axis touches smoothly the Endstop

2. second X Axis (Extruder) toches smoothly the Endstop

3. the extruder moves up a bit and to the right side X Axis
   -- so point 1 to 3 are normal --

4. then the Extruder "chrashes" into the X endstop before it start the mesh leveling

I took a video and packed it into a zip
Extruder_Endstop_Crash.zip

Originally posted by @Nippylicious in #1651 (comment)

[mgg4]

I also had similar issues (#1645), with the crash happening before the first point (front left) is checked. It proceeded to do all 9 (or 49) points, and then reported the crash. The mesh bed leveling process repeated, but this time without the crash.

I had occasion to tear down my hot-end to clear a nasty clog. Upon rebuild, I ran through the full Wizard to test and recalibrate everything. Since that time I have not had any further issue with this crashing. From this, I surmise that something about the 3.7.0 firmware is using (or misusing) a calibration value which is interpreted differently than previous versions of the firmware.

In any case, you might try doing a full calibration using the Wizard as a workaround to see if this helps you.

[Kolous]

I had this issue when upgraded to 3.7.0RC1. Had to force push the x carrige left and then I glued a 1mm thick stripe on the x carrige to trigger X enddstop.

[Kolous]

Also I rearanged the cabeling to be sure (there is not enough space) but this wasn§t the cause of the issue. After 10 attempts I removed the stripe and it works now. This convinced me that it is more firmware than hardware issue.

[Nippylicious]

i think this is definitely a firmware issue, because the first time it touches the endstop gently and the second time it ram / crash into.

[Kolous]

Mine was crashing even the first time.

[cyberboom2]

My mk3 crash same (#1645)

[PavelSindler]

What happens if you home axes (calibration->autohome) and then go to "settings -> move X" and go to minimum X coordinate. Does it crash? Is it possible to go to X = 0?

[Nippylicious]

When i "home" it, then the extruder touches gently the endstop (as it always was)

The crash is after home before mesh Leveling.

In 3.6.0 there is Not such a behaviour

[Alandovos]

Also seeing this in MK3

[PavelSindler]

I have found MK2.5S printer on which I can see this behaviour finally!

[PavelSindler]

Ok, it has been fixed now. Thanks for help.

[MarcoZ76]

Ok, it has been fixed now. Thanks for help.

When will you correct the firmware?

[dikodahan]

I have just experienced it as well. Any time frame estimate for the release of an updated firmware for this issue?
MK3S with MMU2S.

[cyberboom2]

Its crashing anyway

…

On Sat, 30 Mar 2019 at 02:51, Moshe Dahan ***@***.***> wrote: I have just experienced it as well. Any time frame estimate for the release of an updated firmware for this issue? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1674 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AskJCd5M_IvQxMCz8GH4LnerXQZXj3jLks5vbtE9gaJpZM4cHVgF> .

[cyberboom2]

Ok, it has been fixed now. Thanks for help.

its crashing anyway

[cyberboom2]

Its minimum coardinate is +003.2 MK3

…

On Tue, 26 Mar 2019 at 15:33, PavelSindler ***@***.***> wrote: What happens if you home axes (calibration->autohome) and then go to "settings -> move X" and go to minimum X coordinate. Does it crash? Is it possible to go to X = 0? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1674 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AskJCYtQ6wrio7K4waPJG70D_t-rNkNwks5vaj23gaJpZM4cHVgF> .

[cyberboom2]

And its crashing On Sat, 30 Mar 2019 at 21:12, Vilius Jonaitis <viliusjonaitis23@gmail.com> wrote:

…

Its minimum coardinate is +003.2 MK3 On Tue, 26 Mar 2019 at 15:33, PavelSindler ***@***.***> wrote: > What happens if you home axes (calibration->autohome) and then go to > "settings -> move X" and go to minimum X coordinate. Does it crash? Is it > possible to go to X = 0? > > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub > <#1674 (comment)>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AskJCYtQ6wrio7K4waPJG70D_t-rNkNwks5vaj23gaJpZM4cHVgF> > . >

[cyberboom2]

Well done Pavel its not crashing anymore , works fine 7x7 On Sat, 30 Mar 2019 at 21:30, Vilius Jonaitis <viliusjonaitis23@gmail.com> wrote:

…

And its crashing On Sat, 30 Mar 2019 at 21:12, Vilius Jonaitis ***@***.***> wrote: > Its minimum coardinate is +003.2 MK3 > > On Tue, 26 Mar 2019 at 15:33, PavelSindler ***@***.***> > wrote: > >> What happens if you home axes (calibration->autohome) and then go to >> "settings -> move X" and go to minimum X coordinate. Does it crash? Is it >> possible to go to X = 0? >> >> — >> You are receiving this because you commented. >> Reply to this email directly, view it on GitHub >> <#1674 (comment)>, >> or mute the thread >> <https://github.com/notifications/unsubscribe-auth/AskJCYtQ6wrio7K4waPJG70D_t-rNkNwks5vaj23gaJpZM4cHVgF> >> . >> >