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    4 Wires BLTouch Connection

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    Duet Hardware and wiring
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    • Trideoundefined
      Trideo
      last edited by

      Hey There,

      Can we connect the BLTouch as shown below? 4 Wires connection?

      f2e71e62-7622-44bc-802c-4bcf43af3ffd-image.png

      Thanks!

      Simon

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      • Stephen6309undefined
        Stephen6309
        last edited by Stephen6309

        @Trideo For a BLTouch on a Duet 085 or Duet 2:
        https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Duet_2_WiFi_Ethernet_without_a_Duex_2_or_Duex_5_expansion_board

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        • Trideoundefined
          Trideo
          last edited by

          Thanks @Stephen6309, actually we are trying to reduce printer wire types and use a "standard" 4 wires connection for BLTOUCH should help us a lot. Our technical team want to try a 4 wire connection, shorting one negative wire, so before doing a bad move, I preferred to ask here 😉

          Thanks

          Simon

          BoAundefined 1 Reply Last reply Reply Quote 0
          • BoAundefined
            BoA @Trideo
            last edited by BoA

            @Trideo I am using 4 wire connection with genuine bltouch 3.1 without any issues, just connect grounds together, or just leave black not connected (they are connected on BL Touch board I belive).

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            • A Former User?
              A Former User
              last edited by

              At least the genuine 3.0 smart I've got here have the two ground connections common on the bltouch board, so wiring up just one should be fine. Not sure about other versions or imitations but easy enough to test with a multimeter before wiring it.

              On the subject, is it documented what type of connector the 5 pin on the sensor is? I've seen suggestions to both picoblade and some jst but nothing very definitive.

              Trideoundefined 1 Reply Last reply Reply Quote 1
              • dhusoloundefined
                dhusolo
                last edited by

                I connected the 2 ground wires together and it's been fine

                1 Reply Last reply Reply Quote 1
                • Trideoundefined
                  Trideo @A Former User
                  last edited by

                  @bearer thanks for answering! About BLTouch connector, we wrote to AntClaBs directly but they newer answered, any news I keep you informed!

                  A Former User? gaweyoundefined 2 Replies Last reply Reply Quote 0
                  • A Former User?
                    A Former User @Trideo
                    last edited by

                    @Trideo said in 4 Wires BLTouch Connection:

                    we wrote to AntClaBs directly but they newer answered

                    same; but its only been a week for me. last year they responded quite quickly and in length on another query, so fingers crossed!

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                    • gaweyoundefined
                      gaweyo @Trideo
                      last edited by

                      @Trideo said in 4 Wires BLTouch Connection:

                      About BLTouch connector

                      I used the 5 pin version of this recently. https://www.aliexpress.com/item/4000708135064.html seems to fit both the genuine and cloned BL Touch, but the catches are just ever so slightly smaller so its not as secure as the genuine wire. Seems to be on par with the cloned though.

                      A dab of hotglue or silastic for peace of mind might be a good idea, or to get genuine JST parts from a repurable source..

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