IR Height Sensor

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  Guide for posting requests for help
  • T3P3Tony

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  Print sometimes not using mesh bed leveling - startup gcode
  gcode leveling mesh compensation • • ComedianTF2

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  https://www.dropbox.com/s/xlzhcwm6c8qfyar/benchy_not working.gcode?dl=0 https://www.dropbox.com/s/2kg1cpzdxq78m8h/benchy_working.gcode?dl=0
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  Experiences with the Mini IR and PEI
  • Rivam

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  Ive got a Tronxy X5S upgraded with my own mods. I have this glass bed https://www.amazon.co.uk/gp/product/B07FLBLTXF/ref=ppx_yo_dt_b_asin_title_o06__o00_s00?ie=UTF8&psc=1 and DC's IR bed sensor. I purchased a matt black peice of card from WH Smith, cut it to size and placed it between the bed and glass. Everything works a treat and my heightmap could not be better. My prints are top notch too.
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  Can I use an IR sensor as the X and Y endstop?
  • fho

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  The Ormerod printer uses the IR sensor not only as the Z probe but also as the X endstop. There is a tab mounted at the end of the X axis, which the sensor sees. The sensor must not be too close to the bed during homing, so that it doesn't respond to the bed, only to the tab. I hadn't considered the possibility of sensing the edges of the bed instead. The problem would be working out a sequence of moves that will succeed in homing regardless of the initial position. One possibility might be: With reduced motor current, move both X and Y a small amount in the negative direction, to ensure that the probe is over the bed. If X or Y is already at or close to the minimum stop, the reduced motor current will avoid damage. Home Z using the sensor. Drop the head a little, invert the trigger polarity in M558, then home X using the sensor to find the +X edge of the bed. Move back a little in X to place the sensor over the bed again, then home Y using the sensor. Move to bed centre, restore the original trigger polarity, and re-home Z.
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  SOLVED IR Probe and the Fan !?!
  • Michael Suberg

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  @dc42 said in IR Probe and the Fan !?!: May I mark this as solved then? Yes gladly
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  Struggling with IR sensor Z offset
  • octatesta

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  I'm going to have to open one of these threads too, I'm having similar issues and the recommended fixes haven't helped.
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  Hotend crashes after print was stopped and started again.
  • Sushiator

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  I already have that T0 Command in my Config, so i could have both print cooling fans as "Tool Fans" right after Startup. Gonna check that M558 the next time i screw smth up. Oh, and keep up the good Work, great piece of Hardware you made there!
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  IR sensor dead?
  • selva_tvi

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  @dc42 Ok. Thanks for the quicker updates as always.
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  Problems installing the IR Probe on the Duet Ethernet
  • Bonzo

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  @dc42 yes i have read about this. i bought black paper build surface that it seems to work well with. im fighting z axes shutter right now... no printing at all.
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  SOLVED Random sensor height
  • Synapsis

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  Update: after the print I turned off the printer turned it back on and now the ir probe shows 539 and not 538 when an object is close also now when it nears the bed at 464 it slows down and home s perfectly. I did nothing just turned off then on. We can solved for the moment.
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  Ir probe results
  • gbiski

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  @gbiski said in Ir probe results: Can I ask what I do wrong ? I homed the Z with the Endstop. At the centre of the bed the distance was just equal to be able to drag a paper. So I guess the Endstop zeroed correctly. Your Z homing s set up correctly if, when you home Z and then command the head to Z=0 and some suitable XY position, it just drags the paper. The position after homing is not necessarily Z=0, it depends on what you have in your homing files.
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  Best surface for IR probe accuracy
  • stewwy

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  Ok ok, now I understand, as soon as possible I will do it and post data, thanks for the answers
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  Hotend crashing into bed during auto calibration.
  • TwoTone

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  Thanks. I'm sorry I missed that, I used the reprap config tool for the Config.g file and wasn't even paying attention to the probe type in the command line.
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  Mini differential IR height sensor led not working
  • ricard0g0mes

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  If you purchased the sensor within the last 6 months, and the board hasn't been damaged physically, ask your supplier to replace it under warranty. Otherwise, is there a makerspace or similar in your area, where someone else may be able to help you replace it? I can replace the LED, but unless you are in the UK then the costs of postage to and from me may make it un-ecomonic.
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  DuetWifi Delta calibration and mesh issues
  • morkster

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  The ir sensor is the one sold on 1233d.nl. This one does not seem to be the same one sold on duet3d.com (picture looks different). I've ordered the one from duet3d and hope that one will work better, as even on the white PEI sheet, the results fluctuate.
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  IR probe and Duet Maestro
  maestro irprobe • • 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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  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.