Duet3D Logo

    Duet3D

    • Register
    • Login
    • Search
    • Categories
    • Tags
    • Documentation
    • Order
    1. Home
    2. Tags
    3. probe
    Log in to post
    • All categories
    • jp.douarvil 0

      G30: unexpected probe dive motion range
      Beta Firmware • probe trigger dive height build plate • • jp.douarvil 0

      10
      1
      Votes
      10
      Posts
      109
      Views

      dc42

      @jp-douarvil-0 said in G30: unexpected probe dive motion range:

      I noticed that in practice the nozzle systematically dive below Z=0.

      It will do that if the probe is not triggered. If you set the dive height to some value H then that implies you are uncertain as to the exact height of the bed to within a distance +/-H. So the code starts the dive at (trigger_height + H) and ends it if the probe is not triggered first at (trigger_height - H); except that if the trigger height is negative then we just go from +H to -H.

    • 3Dreamer

      LIDAR Bed Leveling
      3D Printing General Chat • lidar bed leveling probe mapping heightmap • • 3Dreamer

      7
      1
      Votes
      7
      Posts
      3234
      Views

      3Dreamer

      @alankilian said in LIDAR Bed Leveling:

      @3Dreamer The sensor being discussed is not a LIDAR sensor, it's a LASER triangulation sensor, so it's nothing special technology-wise.

      People use triangulation sensors for bed leveling all the time and it has it's good and bad points.

      Hi alankilian,
      you are right. I'll quote a paper in order to introduce readers to the differences:

      3D ranging technologies generally fall into either position-based (triangulation) or time-based (LIDAR) approaches. Triangulation can provide much higher precision at close to mid-range but degrades quickly with the square of distance. LIDARs can provide reasonable precision over much longer distances but, unlike triangulation, they do not improve in capabilities at short range where precision and speed are critical for many applications such as autonomous rendezvous and docking, guidance and navigation, obstacle avoidance, and inspection.

      So let's us speak about those technologies!

    • TristanKoeln

      Heigh error after calibrating
      General Discussion • probe firmware • • TristanKoeln

      59
      0
      Votes
      59
      Posts
      736
      Views

      TristanKoeln

      @fcwilt its an anycubic chiron ultrabase

    • herlander

      IR-Prome not working
      Duet Hardware and wiring • irprobe miniirprobe duet 2 wifi probe • • herlander

      9
      0
      Votes
      9
      Posts
      276
      Views

      Phaedrux

      @jmshep That may have been the case in 3.0 because there were still some default pin associations, but in 3.1.1 all default associations are removed and you no longer need to use nil to undefine them. Rather you now must define the pins being used.

    • CCS86

      [F.R.] Auto Define M557 Mesh Bounds from GCODE
      General Discussion • mesh probe probing auto automatic m557 • • CCS86

      5
      0
      Votes
      5
      Posts
      434
      Views

      CCS86

      If anyone is interested, my friend and I developed a Cura post processing script.

      You pass it a single parameter (mesh spacing), and it parses the first layer gcode for min/max X and Y coordinates, and then replaces the M557 line in your start gcode.

      LevelingMeshOptimizer.py.txt

      Just remove the .txt, and drop it here: C:\Program Files\Ultimaker Cura 4.5.0\plugins\PostProcessingPlugin\scripts\

      You must have a static mesh leveling command in your start gcode, like: M557 X0:200 Y0:200 S20

    • CCS86

      Probe Accuracy Test Macro [Issues]
      General Discussion • probe probing bltouch touch accuracy offset rrf3 maestro • • CCS86

      6
      0
      Votes
      6
      Posts
      414
      Views

      CCS86

      @dc42 said in Probe Accuracy Test Macro [Issues]:

      @CCS86 said in Probe Accuracy Test Macro [Issues]:

      @dc42: Does it sound like a bug for the probe offset to be applied over and over on repeated G30 P3 X0 Y180 Z-99999 F2000 calls?

      That doesn't sound right. Please post the complete macro file you are running, and your config.g file, and tell us which firmware version you are running.

      I was originally on 3.0, and now on 3.01-RC4

      Unfortunately, I did not save the macro before modifying it. That is my fault.

      I did find one error in my code, in asking it to probe at X0, when my probe has a +12mm offset. I feel like the firmware should catch this more gracefully though. It appears that it ignores the endstop switch and the X0 minimum designation, and tries to aggressively get the probe to X0 anyway, which hard crashes into the machine limit and jumps the belts.

      Also, it appears that I can't probe more than 32 points before I am "out of range"

      f5cb5f29-c4cd-481d-8a66-404810d82659-image.png

    • FelixH

      Solved PINDA Z-Probe Configuration
      Duet Hardware and wiring • pinda z probe config.h endstop probe m574 • • FelixH

      3
      0
      Votes
      3
      Posts
      1622
      Views

      FelixH

      @dc42 said in PINDA Z-Probe Configuration:

      The reading needs to be around 0 when not triggered (no metal under the probe) and 1000 when triggered. Try removing the i1 parameter from your M558 command in config.g.

      well, that did the trick. Thanks a lot.

      It's not as easy to work with Duet, being used to Marlin for years...

    • IOIIOOO

      Solved BLTouch Not Probing Multiple Times
      Duet Hardware and wiring • bltouch probe • • IOIIOOO

      6
      0
      Votes
      6
      Posts
      567
      Views

      dc42

      @icy_snake said in BLTouch Not Probing Multiple Times:

      I have different Alu beds and glass beds. but all of them look close. That can´t be.
      Also if I rotate them the drop stays always at the same back corner. Thats not possible!

      It is possible, if the beds are flat but the gantry height varies with XY position. I test bed probing by deliberately putting a thin item (e.g. a microscope slide, or thin piece of plastic) on part of the bed.

    • Gregory

      Setting z probe as z min/ z offset setup.
      General Discussion • bltouch z probe duet probe • • Gregory

      3
      0
      Votes
      3
      Posts
      692
      Views

      dc42

      You may also find these wiki pages useful:

      https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_BLTouch
      https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe
      https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter#Section_Homing_Z_using_a_Z_probe