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Use with a CNC?

Scheduled Pinned Locked Moved
IR Height Sensor
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  • undefined
    Nightowl
    last edited by 27 May 2022, 15:17

    Could this be incorporated into a CNC machine, please?

    I would want it to determine changes in tool length, once a tool has been changed, i.e. from an M6 command in the gcode.

    I appreciate M6 isn't supported, but I'd use a macro.

    Thank you

    Few things are more dangerous than taking the advice of someone who thinks he knows what he's doing.
    I'm still on my learning curve, so take everything I say with caution!

    RatRig 1075, Duet3 MB6HC, Sorotec SFM 1000 PV-ER milling motor, Hobbyist

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    • undefined
      Nightowl
      last edited by 28 May 2022, 14:47

      Anyone able to answer this, please?

      Few things are more dangerous than taking the advice of someone who thinks he knows what he's doing.
      I'm still on my learning curve, so take everything I say with caution!

      RatRig 1075, Duet3 MB6HC, Sorotec SFM 1000 PV-ER milling motor, Hobbyist

      undefined 1 Reply Last reply 28 May 2022, 16:15 Reply Quote 0
      • undefined
        oliof @Nightowl
        last edited by 28 May 2022, 16:15

        @nightowl999 it's a z probe like any other. I know nothing about CNC, but if you know the distance between tool tip and IR probe as well as trigger height of the probe, I don't see why it wouldn't be possible.

        <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

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        • undefined
          Phaedrux Moderator
          last edited by 28 May 2022, 18:08

          What exactly do you have in mind? Your question is pretty vague.

          I think a simple microswitch can be used to determine tool length. Though I'm not an expert on that either.

          Is there something about the IR sensor you want to use specifically? It can act as a simple switch as well.

          Z-Bot CoreXY Build | Thingiverse Profile

          undefined 1 Reply Last reply 28 May 2022, 18:14 Reply Quote 0
          • undefined
            Nightowl @Phaedrux
            last edited by 28 May 2022, 18:14

            @phaedrux I was just looking for a (simple!) replacement option for the BitSetter I had wth the Shapeoko, and te IR sensor caught my eye.

            With my S3 I had both a BitZero (XYZ probe) and a BitSetter, but they didn't always work together, randomly trying to send the cutter down to Australia.

            The BitSetter is a mechanical switch, but I thought the IR laser to be more accurate - although I'm only really working with wood, for the time being.

            Few things are more dangerous than taking the advice of someone who thinks he knows what he's doing.
            I'm still on my learning curve, so take everything I say with caution!

            RatRig 1075, Duet3 MB6HC, Sorotec SFM 1000 PV-ER milling motor, Hobbyist

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            • undefined
              Phaedrux Moderator
              last edited by 28 May 2022, 18:20

              The IR sensor can be a bit particular about the surface it's meant to probe. A big flat non-reflective bed surface works best. A small shiny tool tip may not be the most reliable trigger. A simple mechanical switch would be more sensible I think, and it's really hard to beat it's accuracy.

              Z-Bot CoreXY Build | Thingiverse Profile

              undefined 1 Reply Last reply 28 May 2022, 18:23 Reply Quote 0
              • undefined
                Nightowl @Phaedrux
                last edited by 28 May 2022, 18:23

                @phaedrux Fair enough, and the point of my question really, although badly put.

                It's primary purpose would be to measure the difference in tool length when a tool has been changed, but a mechanical switch is quite straightfoward.

                Few things are more dangerous than taking the advice of someone who thinks he knows what he's doing.
                I'm still on my learning curve, so take everything I say with caution!

                RatRig 1075, Duet3 MB6HC, Sorotec SFM 1000 PV-ER milling motor, Hobbyist

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