IR Height Sensor

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  Guide for posting requests for help
  • T3P3Tony

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  IR probe and Duet Maestro
  irprobe maestro • • Maut

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  Something isn't right, however the probe will still work even if the Duet is configured for analog mode and the IR sensor is producing a digital output. You won't get the benefit of the probing move slowing down when the probe gets close to trigger height.
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  This topic is deleted!
  • chris33

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  DuetWifi Delta calibration and mesh issues
  • morkster

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  Can you confirm that the IR sensor you are using is the differential Mini IR sensor, that I sell through Escher3d.com and is also dole by duet3d.com and their distributors? It should work with black surfaces, unless you have a very old sensor. I have recently tested it with black PrintBite.
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  ir sensor wiring help
  • chris33

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  See section "Connecting to Duet electronics" at https://miscsolutions.wordpress.com/mini-height-sensor-board/.
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  Which Z-probe to choose?
  • briskspirit

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  @dc42 Overall sheet thickness is 0.85-1.00mm with steel. So PEI should be ~0.5mm, but surface is rough and different colors (blue/white)
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  Drawing / CAD model request
  • Zasquatch

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  Thanks! That should get the job done. I am creating a mount for a cyclops/chimera Aqua - don’t think any exist yet.
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  Suggestion for a new hardware revision
  • gtj0

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  The present design was made so that it can be fitted below the heatsink of a standard E3D V6 or compatible hot end, thereby allowing it to be placed closer to the nozzle.
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  Sensor component fell off
  • Nuffe

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  The phototransistor is SFH3015FA, the IR emitter is SFH4045N. They are available from the usual component distributors e.g. Digikey, Mouser and RS, but not from Farnell/element14.
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  Sensor suddenly changed trigger height
  • Mugga

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  @mugga, I'm glad you solved it!
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  Fiber Optic Extension?
  • gtj0

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  The sensor looks for the point where equal amounts of light are reflected into the phototransistor from each IR emitter.
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  Houston.... We have a problem... Think a big problem...
  • peirof

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  Yes I could look at what components are likely to have failed. However, if the green 3.3V LED is not lighting up and/or multiple ICs are getting hot, this typically means that multiple Ics have failed and the board is uneconomic to repair.
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  Testin Mini Height Sensor
  • peirof

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  Hi, YES... This was
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  Mesh Bed Probing issues
  • bbriggstkd

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  I have the mini differential IR Height sensor. I'll try removing those files and see what happens. I checked and they are there.
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  Homing with z probe on z axis
  • Puppet172

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  See https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#main for advice on connecting various types of Z probe. If the V_FAN jumper is set to the VIN position then the easiest place to get VIN is from one of the always-on fan connectors.
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  Need Help dc42
  • Saltypetz

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  For some reason I have to use heater pin 7 not heater pin 3.
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  homing z failed with bltouch
  • jroh

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  The bed.g file is needed only to do G32 bed probing, not for homing Z. Have you tested the Z probe and it configuration as described at https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe ?
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  Homing failed error even though it succeeded
  • ryall

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  G30 S-1 just stops the probing move when the prove is triggered and reports the height, but it doesn't set the Z position. Use plain G30, without the S-1.
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  Auto mesh/bed leveling not working
  • ryall

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  Thanks, that seems to have fixed it (mostly).
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  IR probe not triggering at 500
  • benwilde

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  The values should be close to 465 and 535. If you are getting 408 and 439 then I suspect that you have a poor connection between the +3.3V pin of the Z probe connector and the Vcc pin of the sensor.