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    BL Touch deploying when printer plugged in, but not with GCode

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    • Tryptamineundefined
      Tryptamine
      last edited by

      I am using a legitimate BL Touch on a Duet Wifi, wired according to https://docs.duet3d.com/User_manual/Connecting_hardware/Z_probe_connecting
      Wiring the BLTouch
      Duet 2 Wifi without Expansion Board

      e1723c2d-0938-47f9-b74b-859b420111b5-image.png

      When I run M401 nothing happens.
      My deployprobe.g says M280 P0 S10

      Running M280 P0 S10 directly, also nothing happens.

      When I was using my printer the last time (like one year ago, back in FW 2.x) the probe was working. Now I got it to my new place, updated Firmware to 3.3 and the probe does not deploy.

      I first thought some part of my wiring broke.
      But when I plug in the printer's power, the probe deploys and retracts 3 times, so this is no electrical issue.

      config.g

      Help is greatly appreciated.

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

        @tryptamine If your BLTouch is wired as in the picture, the servo pin should be exp.heater3, not exp.heater4 as in your config.g. In config.g change the M950 line to:

        M950 S0 C"exp.heater3"                             ; create servo pin 0 for BLTouch
        

        Ian

        Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

        Tryptamineundefined 1 Reply Last reply Reply Quote 1
        • Tryptamineundefined
          Tryptamine @droftarts
          last edited by

          @droftarts you are a hero.

          1 Reply Last reply Reply Quote 0
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