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cnc xpro v5 controller question

Discussion in 'General Electronics' started by gbtucson, Apr 23, 2025 at 5:40 PM.

  1. gbtucson

    gbtucson New
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    Hi there, newbie.
    I'm in the process of converting my Sherline microlathe to a cnc machine. I chose the cnc xpro v5 controller as it seemed to have all the features i need. However, documentation and troubleshooting is not great. I've read everything in the github repository and it's pretty basic.
    Right now I have x and y axis motors working fine but the limit switches on x are not working. I believe they are wired correctly and according to instructions (I have them NO and wired in parallel, with a switch on each end of travel).
    When I click the limit switch I can see the light come on on the cnc xpro v5, so it is getting some sort of a signal. It's just not stopping the motor. I'm using the webui of the controller. I entered the $Limits/Hard=On instruction, no change.
    First of all, I'm looking for any forum that deals in the cnc xpro v5 that might be the most suitable for this kind of question, so please forward me elsewhere if this is not the best place for this question!
    Thanks.

    EDIT- I've moved onto the next problem. limit switches are working correctly, they now stop the lathe. But perhaps I'm misunderstanding something, but when I tell it to "home" the x axis, it runs to the right, hits the switch, backs off, returns to touch the switch again, backs off, then stops. Should it not go all the way to the left to look for that switch as well? If so, it's not doing it.
     
    #1 gbtucson, Apr 23, 2025 at 5:40 PM
    Last edited: Apr 23, 2025 at 7:46 PM
  2. Alex Chambers

    Alex Chambers Master
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    No, that is the correct sequence. Homing sets a reference point in the machine co-ordinate system. Combined with the max dimensions settings in grbl that defines the machine's workspace.

    Alex.
     
  3. gbtucson

    gbtucson New
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    Thanks! Then I'm making good progress!
     

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