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Themenstarter
I hope someone can help with this issue. I have just completed the M1000 machine built and are looking to do my first home procedure.
All limit switches function without power - using a multimeter I can see that all 8 are causing an open circuit when pressed individually.
When powering up the machine and UCCNC, I can also see in the diagnostics page that all 4 Y axis limit switches are triggering and can be software reset.
However, if I trigger either of the X or Z axis limit switches and reset the software on the red button, the Y axis limit switch no longer works. It is always closed regardless of which on them I trigger.
X/Z limits switches continue to operate correctly.
Same behavior occurs if I reset using the E-stop - after either X/Z limit switch has been pushed the Y limit switch no longer works.
Only way to bring the machine back is to cut power and turn it back on and reset UCCNC.
I cannot perform a Home procedure as this triggers first Z, then X and finally Y, at which point the Y axis have been disabled by something.
I am hoping there is an easy fix, but I am afraid this is a circuit board issue, as I can measure with a multimeter over the Y1 / Y2 connections that they are shorted always after pressing X or Z limit switches.
I really appreciate any help to try to debug this issue.
Veröffentlicht : 01/03/2025 10:46 a.m.
Themenstarter
Some more info after further debug:
Rather than cutting power to the machine, if I unhook the USB cable to the PC - reconnect it and restart UCCNC + red button reset - the Y limit switches again work, until I trigger either X or Z limit switches.
So it appears to be tied to USB connection/software - or perhaps some reset that happens in the machine hardware when USB is disconnected/reattached.
If I have power to the machine, but no computer/USB connected, Y limit switches operate as normal, including after triggering X/Z limit switches - I can confirm this with a multimeter over the Y1/Y2 limit switches.
Veröffentlicht : 01/03/2025 12:17 p.m.
Themenstarter
Since no reply to my issue from StepCraft or others for 3 months, I decided to share my "solution" / hack to get the machine working.
Basically I have daisy-chained the two y-axis limit switches with the X/Z limit switch and shunted the 2x Y limitswitch connector terminals.
From the software side this works the same and I can now perform homing on all three axis, while avoiding the connection issue on the board.
Attached are a picture on the implementation as well as a small diagram to show what is going on.
Diese r Beitrag wurde geändert Vor 1 Jahr von Mads Hommelgaard
Veröffentlicht : 29/05/2025 5:49 p.m.
@memxcell Hi,
I have the same issue here. Weird you need to modify the electronics of such an expensive machine.
/
Emil
Veröffentlicht : 28/06/2025 4:35 p.m.
@memxcell unfortunately, we have not received any email from you so far.
If you are experiencing any issues with your machine, please do not hesitate to contact us again so that we can support you in resolving the problem.
You can reach us at [email protected].
We look forward to hearing from you and helping you as soon as possible.
Best regards,
Your Team from STEPCRAFT
Veröffentlicht : 01/07/2025 3:10 p.m.
