Endstop troubles

This topic contains 12 replies, has 3 voices, and was last updated by Profile photo of Chris Chris 2 months, 2 weeks ago.

Viewing 13 posts - 1 through 13 (of 13 total)
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  • #30821
    Profile photo of Nick
    Nick
    Participant

    1) Did you buy everything from here?
    All but the 3D printed parts
    2) Are you using end stops?
    1 on the Z axis
    3) Mac or PC?
    PC with Windows 10

    Ok, so I’ve been running the MPCNC for several weeks now with no major issues other than getting consistent home positions. Therefore I made a zeroing tool to fix this. It has worked well for several days.

    This has been working amazingly for a several days, but now after doing some periodic maintenance on the machine that required me to unplug the board from everything now anytime the endstop closes the circuit the board disconnects from the computer. If you close the circuit again the board will reconnect. Even if you switch the endstop to another axis on the board it does the same thing.

    While the endstop is unplugged from the board all things run as normal.

    I was wondering if anyone could lead me to what could have changed to cause this. My initial troubleshooting has been unfruitful.

    #30823
    Profile photo of Ryan
    Ryan
    Keymaster

    You should include some pictures of how you have it wired and plugged in.

    #30839
    Profile photo of Chris
    Chris
    Participant

    I am going to reply for Nick because he has gone home and I am still here so I took some pictures and have a short video of the zeroing tool working the last time we used it. https://youtu.be/6guCFcoDcps

    • This reply was modified 2 months, 3 weeks ago by Profile photo of Chris Chris.
    #30849
    Profile photo of Ryan
    Ryan
    Keymaster

    Well I can’t see the board connections or the z wires, so I will just stab in the dark.

    “Routine maintenance” makes me think the endstop wires have shorted with something while messing with it. The plug could be leaning and touching the pins next to it or somewhere else. I would start with the ramps z stop connection and work your way to the end. If you don’t see a issue something must have happened to the board.

    #30856
    Profile photo of Nick
    Nick
    Participant

    I meant routine maintenance in such as cleaning the rails and bearings and checking the plastics for any unnatural wear (had a crash the night before). The board was working perfectly fine prior, not so much after.

    #30858
    Profile photo of Ryan
    Ryan
    Keymaster

    Did you check for a short?

    I can’t really offer any help without pictures or some other info. If it worked before the maintenance something had to happen. Once these boards prove they work they work for years if left untouched.

    #30860
    Profile photo of Nick
    Nick
    Participant

    We’ve checked the wiring for a short. They came back clean. As for checking the board, I really wouldn’t know where to start.

    #30864
    Profile photo of Chris
    Chris
    Participant

    ive tested the wires with my multi meter and they test good.

    #30867
    Profile photo of Ryan
    Ryan
    Keymaster

    Thanks for the pic. so much easier

    You are on the wrong pins
    You might have ruined your board.

    signal and ground, you are shorting positive and ground.

    #30871
    Profile photo of Chris
    Chris
    Participant

    ill have to get Nick to look and see if that is where he had them plugged in he took it off earler and i ran out there to take the pic and plugged it in real quick where i thought he had it but it wasnt powered and i unplugged it so hopefully i didnt screw up.

    #30872
    Profile photo of Chris
    Chris
    Participant

    so it should go on the middle and the right pin? looking the way the picture was taken.

    #30874
    Profile photo of Ryan
    Ryan
    Keymaster

    The board is labeled +-s, you want -&s

    #31035
    Profile photo of Chris
    Chris
    Participant

    Just a quick update. We switched the wires around and everything is working fine, must have plugged them in wrong when we serviced the cnc. Thank you for your help Vicious. on a side note I plan on making a video for my YouTube channel on how to make a auto Z touch plate and install it on a Ramps board, if you would like I could post the video here also for anyone who might want one for themselves. Thanks again!

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