1 Topic by wingshafts

  • wingshafts
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  • Registered: 2016-08-16
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Topic: End stops prematurely triggered mid print

Hi all.

I currently have a Solidoodle 4 that's 2 years old and it's been pretty good for the most part.

Just recently, I've tried to do a 24hr+ print and it ended up miserably failing. Halfway through the print, the model had a huge layer shift (> 40mm shift) and messed up the print altogether.

Having a look through the logs, I've noticed that both the X-axis and Y-axis end stops were triggered mid-print and continued to do so for a few layers. I've attached an excerpt of the problem in the file. This has been the first case I've had of a large layer shift since I updated the firmware last week.

Has anyone had this sort of problem before? I have a feeling that the cable that extends from the extruder might be the main cause.

Post's attachments

End stop trigger logs.txt 36.87 kb, 2 downloads since 2016-08-16 

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2 Reply by carl_m1968

  • carl_m1968
  • carl_m1968
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  • From: Far North almost not Dallas
  • Registered: 2014-10-17
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Re: End stops prematurely triggered mid print

Endstop harnesses getting bad or the endstops themselves.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

3 Reply by Tin Falcon

  • Tin Falcon
  • Tin Falcon
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  • From: New Jersey, USA
  • Registered: 2014-08-01
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Re: End stops prematurely triggered mid print

What carl said.
to explain in a little more detail end stops serve a couple purposes
1) homing switches to reference the home position automatically.
2) a safety switch  to stop the machine if it tries to go beyond the limit of the bed.


As a safety device these limit switches end stops are wired normal closed . so they are triggered when the switch opens . but they also trigger if a contention comes loose or a wire breaks or get chaffed.

Problems with the main cable would account for the x being triggered . the y wires take there own path.

you are looking in the right direction wire problem most likely cause.
tin

Soliddoodle 4 stock w glass bed------Folger Tech Prusa 2020 upgraded to and titan /aero extruder mirror bed
FT5 with titan/ E3D Aero------MP mini select w glass bed
MP Utimate maker pro-W bondtech extruder
Marlin/Repetier Host/ Slic3r and Cura