IR sensor squares

Discussion in 'Calibration, Help, and Troubleshooting' started by R Design, Mar 14, 2016.

  1. R Design

    R Design Well-Known Member

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    There was a bit of a debate on G+ about the merits of our IR sensor & the benefits of painting the back of the glass black to ensure the sensor is not misled by PCB warp.

    Just launched a print that makes use of most of the bed and, must say the first layer went down perfectly ;)

    Nevertheless it occurred that, in fact, it's only necessary to put a splash of paint under the exactly places where the IR sensor does it's thing. Perhaps no more than a square centimetre each time? (In the doc. https://miscsolutions.wordpress.com/mini-height-sensor-board/ no mention of the area the sensor scans, but seeing that it's 1.5mm from the bed it must be less than a square! )

    Anyone know the bed coordinates that the IR takes it's measurements at? (Pro and Dual are different.)
     
  2. Chase.Wichert

    Chase.Wichert Well-Known Member

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    It doesn't take measurements except for near the home position on the Dual...
     
  3. Mike Kelly

    Mike Kelly Volunteer

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    The IR sensor will trigger on clear glass so I don't think it's actually sensing what's underneath.
     
  4. elmoret

    elmoret Administrator

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