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    Solved How to free Stepper Brake pin?

    Tuning and tweaking
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    • oozeBot
      oozeBot last edited by

      @dc42 - We're hoping you can help us out. We are using the following to set the Stepper Brake for our printers running 3.4b5

      ;===========================================
      ;== Stepper Brake ==========================
      M569.7 P0 C"0.out1"
      

      What we need is a quick way to free that pin on our workbench to disable the steppers brakes during assembly. Here is what we are using but the M950 P0 C"nil" isn't working..

      M950 P0 C"nil"
      M950 P0 C"0.out1"
      M42 P0 S1
      M18
      

      Is there something wrong with the command to free the pin? Or can you not free the pin once defined as a stepper brake? The only work-around we've found is to REM that line out of config.g and re-run it, but that's quite cumbersome as it resets a lot of other variables we've setup for testing. Thanks!

      dc42 1 Reply Last reply Reply Quote 0
      • dc42
        dc42 administrators @oozeBot last edited by

        @oozebot have you tried this?

        M569.7 P0 C"nil"

        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

        oozeBot 1 Reply Last reply Reply Quote 0
        • oozeBot
          oozeBot @dc42 last edited by

          @dc42 no, not yet - didn't think/know to try that. I'll report back after testing on the next machine that frees up. Thanks!

          dc42 1 Reply Last reply Reply Quote 0
          • dc42
            dc42 administrators @oozeBot last edited by

            @oozebot the rule is that to free up a pin that you previously allocated for something, you use the same command that you used to allocate it, modified so that it no longer needs the pin.

            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

            oozeBot 1 Reply Last reply Reply Quote 0
            • oozeBot
              oozeBot @dc42 last edited by

              @dc42 That worked - I guess we should have assumed it was that easy. Thanks again!

              1 Reply Last reply Reply Quote 0
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