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IR Probe False Reading

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  • undefined
    Synapsis
    last edited by 28 Apr 2019, 15:52

    I 'm having a problem lately with the IR Probe which while probing will give a IR Probe reading at 33 an stops thinking its homed but at least 6mm from the bed then i move it up 0.05 and home again and then it will home correctly starting at 464 then 540 when its close to the bed.

    Now this was happening a few days ago then stopped but today it started again.

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    • undefined
      Phaedrux Moderator
      last edited by 28 Apr 2019, 21:08

      Have you tried cleaning the sensor with some isopropyl?

      Z-Bot CoreXY Build | Thingiverse Profile

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      • undefined
        Synapsis
        last edited by 30 Apr 2019, 19:01

        No but will do so now. Thanks for the suggestion.

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        • undefined
          Synapsis
          last edited by 4 May 2019, 09:13

          Ok still not working , Question is why do I have a reading of 29 to 33 when the bed is even a 150mm down.
          Shouldn't it be zero or over 1000 when very far away from the bed?

          undefined 1 Reply Last reply 4 May 2019, 10:25 Reply Quote 0
          • undefined
            dc42 administrators @Synapsis
            last edited by 4 May 2019, 10:25

            @synapsis said in IR Probe False Reading:

            Ok still not working , Question is why do I have a reading of 29 to 33 when the bed is even a 150mm down.
            Shouldn't it be zero or over 1000 when very far away from the bed?

            Yes. A reading of around 30 suggests to me that you have a bad connection between the IR sensor and the Duet.

            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

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