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    Endstop issue

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    Duet Hardware and wiring
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    • nikkerundefined
      nikker
      last edited by

      Im building my printer and had the basics wired to check it all out, XY steppers and XY endstops. Everything worked fine but after I wired everything up in a nice wire loom/harness only the X axis homes correctly. The Y axis acts as if wherever it is at triggers the switch and sets that as the origin. My endstops are NC so when not switched the LEDs are on. I verified they work and when switched the LED goes off. Is it possible that I am getting interference or something from the stepper motors now that I have everything in a single wire loom instead of loose when testing it?

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      • dc42undefined
        dc42 administrators
        last edited by

        Yes, it's possible. The endstop wires can pick up inductive or capacitive coupling from other wires, in particular stepper motors wires. With NC switches, inductive coupling is more likely to be the problem. To eliminate it, use twisted pair cable for the endstop wires and/or two twisted pairs for the stepper motor wires (one per phase). Or provide a greater separation distance between the endstop wires and the stepper motor wires.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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        • nikkerundefined
          nikker
          last edited by

          Thanks for the information. Time to re-wire lol.... i hate wiring but a good job is very satisfying.

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