Duet3D Logo

    Duet3D

    • Register
    • Login
    • Search
    • Categories
    • Tags
    • Documentation
    • Order

    NC Limit Switches

    Duet Hardware and wiring
    3
    4
    122
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Hayden1993
      Hayden1993 last edited by

      Just about to add my limit switches on my CNC (X, Y, Z)

      I've read a fair bit online and it seems better/safer to wire them as NC instead of NO?

      Can I also confirm I'm wiring them correctly on my Duet3 6CH board

      I0_1/2/3

      3.3V = NC
      GND = Gnd

      Hayden

      fcwilt 1 Reply Last reply Reply Quote 0
      • fcwilt
        fcwilt @Hayden1993 last edited by

        @hayden1993

        Yes NC is better.

        That way the two wires are shorted together thus making interference from another source of electrical noise very unlikely.

        You want to connect the switch NC connection to the board I/O GND and the switch COMMON connection to the board I/O io#.in connection.

        Configure the input for active high.

        Frederick

        Printers: A FT-5 with the 713 upgrade bits. A custom MarkForged style. A small Utilmaker style and a CoreXY from kits. Various hotends. Using Duets (2 and 3) running 3.4.1

        Hayden1993 1 Reply Last reply Reply Quote 0
        • Hayden1993
          Hayden1993 @fcwilt last edited by

          @fcwilt much appreciated, thank you

          droftarts 1 Reply Last reply Reply Quote 0
          • droftarts
            droftarts administrators @Hayden1993 last edited by

            @hayden1993 See https://duet3d.dozuki.com/Wiki/Connecting_endstop_switches#Section_Microswitch

            Ian

            Cartesian bed-slinger with Duet 3 Mini 5+ WiFi : RRP Fisher Delta v1 with Duet 2 Maestro : TronXY X5S with Duet 2 Wifi (in progress)

            1 Reply Last reply Reply Quote 0
            • First post
              Last post
            Unless otherwise noted, all forum content is licensed under CC-BY-SA