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Auto level is not level

EnlightxEnlightx
edited January 2015 in Repetier-Firmware
Hi

Could do with some help. Im needin to use auto level on my mini kossel as printer is moved around a fair bit on the desk so gets uncalibrated if i run without etc.

Wanting to run repetier firmware over marlin as i find it much easier to edit settings .

iv set up autolevel using the normal mini kossel probe.
Iv set up endstop offsets so that all test points are same value
iv also setup delta radius to be correct.

the issue i have is its not getting a level print.  in both X and Y negative side is squashed and positive side is to high (gaps in permimiters)

Picture of a print

If i can get help sorting this i will happily donate £10 to the repeiter cause!

My start Gcode is as follows
G28   ;move to endstops
G0 X0 Y0 Z140;START PROBE DEPLOY
G0 X30 Y90 Z140
G0 X-10 Y90 Z140
G0 X0 Y0 Z140 ;END PROBE DEPLOY
G32 S2 ; RUN REPETIER AUTO LEVEL
G0 X0 Y0 Z140; RETRACT PROBE START
G0 X-45 Y88 Z20
G0 X-45 Y88 Z3
G0 X-45 Y88 Z30
G0 X0 Y-70 Z140 ;RETRACT PROBE END
G92 E0                  ;zero the extruded length
G1 F200 E20              ;extrude 20mm of feed stock
G92 E0                  ;zero the extruded length again
G4 S3 ; wait 3 seconds to remove mess

Eeprom Settings are
Z Probe Height = 1.900
Max Z probe Bed Dist = 10
Z Probe speed = 20
Z probe XY Speed = 150
Z Probe offset X = 0
Z Probe offset Y = 12
Z Probe 1 X = -64.950
Z Probe 1 Y = -37.500
Z Probe 2 X =  64.950
Z Probe 2 Y = -37.500
Z Probe 3 X = 0.000
Z Probe 3 Y = 75
Auto Level Active = 1


Comments

  • RepetierRepetier
    Iv set up endstop offsets so that all test points are same value
    iv also setup delta radius to be correct.

    What does that mean? How can we say you did it correct if you just state it is correct. If there is an error it could never be detected with such a description.

    I always start G32 near bed not 140mm above. It is important not to hit endstops at the z level you start. Since it is a mini that could already be a problem.

    You should provide a height map (Host->Tools->Heigh map) so we can see the resulting error distribution over the bed. That normally shows quite clear what is callibrated wrong.

    As a last resort use the new z correction feature (G29 creates the correct matrix, but that only helps to make it stick better to bed. At higher z you get the same wrong distortion you now have.
  • EnlightxEnlightx
    Thank you got helping.

    I check the offsets by calibrating spots 25mm in front of each tower (points calculated using CAD) i change offsets untill all places read the same Z height when hitting peice of paper.  Then the delta radius is calced by changed delta raidus untill centre point is same Z height with paper as outer points. i got this method from http://www.robertshady.com/content/beginners-guide-rostock-max-3d-printer-seemecnccom

    Im pretty sure the G32 is not hitting the Z max endstops as i had this problem in the beginning of testing, but yes makes sense to start it lower so i will lower it and try again.

    i wasnt aware of the height map, here are the results
    X:    -50.00    -35.71    -21.43    -7.14    7.14    21.43    35.71    50.00
    y:50.00    11.65    11.68    11.71    11.75    11.81    11.85    11.90    11.99
    y:35.71    11.63    11.65    11.70    11.74    11.79    11.82    11.93    11.99
    y:21.43    11.63    11.68    11.69    11.73    11.80    11.85    11.93    11.96
    y:7.14    11.63    11.69    11.70    11.75    11.80    11.84    11.91    11.96
    y:-7.14    11.69    11.70    11.71    11.75    11.81    11.86    11.90    11.95
    y:-21.43    11.74    11.75    11.76    11.79    11.81    11.89    11.89    11.95
    y:-35.71    11.79    11.77    11.81    11.82    11.85    11.89    11.90    11.94
    y:-50.00    11.89    11.85    11.86    11.86    11.89    11.90    11.90    11.91

    I have enabled the Z correction feature but like you say no point if im having issues. currently the prints i am getting using autolevel you can see left side is slimmer in Z then right side.

    any advise i would love to hear as i love this software and firmware and its so nice to be able to talk with the creator and not someone who is on a forum and could be wrong.
  • RepetierRepetier
    WIth some help I found today a error in probing routine. You had to start below Z_PROBE_BED_DISTANCE or the measured value would be wrong. This could lead to exactly your pattern. So pleas eupdate to current 0.92 version and try again.
  • EnlightxEnlightx
    can i use the website config tool for this or do i need to download from a git hub?

    i think website currently uses

    0.92.2

  • RepetierRepetier
    Both are up to date, so yes you can.
  • EnlightxEnlightx
    okay cool, just need to get a few prints finished while i have it level non autolevel mode then ill update and post back

    thanks for the help so far
  • EnlightxEnlightx
    Okay im back on this now. i have updated via the website and flashed firmware. reenabled autolevel. reset the matrix and still not getting level print.

    Can someone explain or even show pic or video on how to do the step that involves using 
     G132 S1 ?
  • EnlightxEnlightx
    i did notice that while running create height map i get the following
    15:43:05.735 : Z-probe:10.03 X:-50.00 Y:-50.00 zCorr:-0.01
    15:43:06.850 : Z-probe:9.96 X:-35.71 Y:-50.00 zCorr:-0.01
    15:43:07.956 : Z-probe:9.89 X:-21.43 Y:-50.00 zCorr:-0.01
    15:43:09.058 : Z-probe:9.84 X:-7.14 Y:-50.00 zCorr:-0.01
    15:43:10.152 : Z-probe:9.78 X:7.14 Y:-50.00 zCorr:-0.01
    15:43:11.241 : Z-probe:9.71 X:21.43 Y:-50.00 zCorr:-0.01
    15:43:12.321 : Z-probe:9.65 X:35.71 Y:-50.00 zCorr:-0.01
    15:43:13.398 : Z-probe:9.56 X:50.00 Y:-50.00 zCorr:-0.01
    15:43:15.811 : Z-probe:9.93 X:-50.00 Y:-35.71 zCorr:-0.01
    15:43:16.917 : Z-probe:9.88 X:-35.71 Y:-35.71 zCorr:-0.01
    15:43:18.014 : Z-probe:9.83 X:-21.43 Y:-35.71 zCorr:-0.01
    15:43:19.112 : Z-probe:9.80 X:-7.14 Y:-35.71 zCorr:-0.01
    15:43:20.201 : Z-probe:9.76 X:7.14 Y:-35.71 zCorr:-0.01
    15:43:21.291 : Z-probe:9.71 X:21.43 Y:-35.71 zCorr:-0.01
    15:43:22.372 : Z-probe:9.65 X:35.71 Y:-35.71 zCorr:-0.01
    15:43:23.450 : Z-probe:9.59 X:50.00 Y:-35.71 zCorr:-0.01
    15:43:25.863 : Z-probe:9.88 X:-50.00 Y:-21.42 zCorr:-0.01
    15:43:26.960 : Z-probe:9.83 X:-35.71 Y:-21.42 zCorr:-0.01
    15:43:28.058 : Z-probe:9.79 X:-21.43 Y:-21.42 zCorr:-0.01
    15:43:29.146 : Z-probe:9.75 X:-7.14 Y:-21.42 zCorr:-0.01
    15:43:30.232 : Z-probe:9.73 X:7.14 Y:-21.42 zCorr:-0.01
    15:43:31.317 : Z-probe:9.69 X:21.43 Y:-21.42 zCorr:-0.01
    15:43:32.398 : Z-probe:9.64 X:35.71 Y:-21.42 zCorr:-0.01
    15:43:33.475 : Z-probe:9.61 X:50.00 Y:-21.42 zCorr:-0.01
    15:43:35.884 : Z-probe:9.81 X:-50.00 Y:-7.14 zCorr:-0.01
    15:43:36.977 : Z-probe:9.79 X:-35.71 Y:-7.14 zCorr:-0.01
    15:43:38.071 : Z-probe:9.75 X:-21.43 Y:-7.14 zCorr:-0.01
    15:43:39.156 : Z-probe:9.71 X:-7.14 Y:-7.14 zCorr:-0.01
    15:43:40.245 : Z-probe:9.71 X:7.14 Y:-7.14 zCorr:-0.01
    15:43:41.328 : Z-probe:9.69 X:21.43 Y:-7.14 zCorr:-0.01
    15:43:42.409 : Z-probe:9.64 X:35.71 Y:-7.14 zCorr:-0.01
    15:43:43.490 : Z-probe:9.61 X:50.00 Y:-7.14 zCorr:-0.01
    15:43:45.899 : Z-probe:9.76 X:-50.00 Y:7.14 zCorr:-0.01
    15:43:46.987 : Z-probe:9.74 X:-35.71 Y:7.14 zCorr:-0.01
    15:43:48.073 : Z-probe:9.70 X:-21.43 Y:7.14 zCorr:-0.01
    15:43:49.158 : Z-probe:9.70 X:-7.14 Y:7.14 zCorr:-0.01
    15:43:50.243 : Z-probe:9.68 X:7.14 Y:7.14 zCorr:-0.01
    15:43:51.320 : Z-probe:9.64 X:21.43 Y:7.14 zCorr:-0.01
    15:43:52.402 : Z-probe:9.64 X:35.71 Y:7.14 zCorr:-0.01
    15:43:53.479 : Z-probe:9.60 X:50.00 Y:7.14 zCorr:-0.01
    15:43:55.883 : Z-probe:9.73 X:-50.00 Y:21.42 zCorr:-0.01
    15:43:56.968 : Z-probe:9.70 X:-35.71 Y:21.42 zCorr:-0.01
    15:43:58.050 : Z-probe:9.65 X:-21.43 Y:21.42 zCorr:-0.01
    15:43:59.132 : Z-probe:9.64 X:-7.14 Y:21.42 zCorr:-0.01
    15:44:00.209 : Z-probe:9.64 X:7.14 Y:21.42 zCorr:-0.01
    15:44:01.286 : Z-probe:9.63 X:21.43 Y:21.42 zCorr:-0.01
    15:44:02.363 : Z-probe:9.61 X:35.71 Y:21.42 zCorr:-0.01
    15:44:03.440 : Z-probe:9.63 X:50.00 Y:21.42 zCorr:-0.01
    15:44:05.840 : Z-probe:9.70 X:-50.00 Y:35.71 zCorr:-0.01
    15:44:06.925 : Z-probe:9.68 X:-35.71 Y:35.71 zCorr:-0.01
    15:44:08.006 : Z-probe:9.66 X:-21.43 Y:35.71 zCorr:-0.01
    15:44:09.087 : Z-probe:9.64 X:-7.14 Y:35.71 zCorr:-0.01
    15:44:10.161 : Z-probe:9.61 X:7.14 Y:35.71 zCorr:-0.01
    15:44:11.239 : Z-probe:9.60 X:21.43 Y:35.71 zCorr:-0.01
    15:44:12.315 : Z-probe:9.63 X:35.71 Y:35.71 zCorr:-0.01
    15:44:13.392 : Z-probe:9.64 X:50.00 Y:35.71 zCorr:-0.01
    15:44:15.797 : Z-probe:9.70 X:-50.00 Y:50.00 zCorr:-0.01
    15:44:16.882 : Z-probe:9.66 X:-35.71 Y:50.00 zCorr:-0.01
    15:44:17.964 : Z-probe:9.68 X:-21.43 Y:50.00 zCorr:-0.01
    15:44:19.045 : Z-probe:9.64 X:-7.14 Y:50.00 zCorr:-0.01
    15:44:20.122 : Z-probe:9.64 X:7.14 Y:50.00 zCorr:-0.01
    15:44:21.199 : Z-probe:9.61 X:21.43 Y:50.00 zCorr:-0.01
    15:44:22.275 : Z-probe:9.61 X:35.71 Y:50.00 zCorr:-0.01
    15:44:23.355 : Z-probe:9.61 X:50.00 Y:50.00 zCorr:-0.01

    Should the Zcorr be changing when it finds that the point is unlevel ?

    height map output
    X:    -50.00    -35.71    -21.43    -7.14    7.14    21.43    35.71    50.00
    y:50.00    9.70    9.66    9.68    9.64    9.64    9.61    9.61    9.61
    y:35.71    9.70    9.68    9.66    9.64    9.61    9.60    9.63    9.64
    y:21.43    9.73    9.70    9.65    9.64    9.64    9.63    9.61    9.63
    y:7.14    9.76    9.74    9.70    9.70    9.68    9.64    9.64    9.60
    y:-7.14    9.81    9.79    9.75    9.71    9.71    9.69    9.64    9.61
    y:-21.43    9.88    9.83    9.79    9.75    9.73    9.69    9.64    9.61
    y:-35.71    9.93    9.88    9.83    9.80    9.76    9.71    9.65    9.59
    y:-50.00    10.03    9.96    9.89    9.84    9.78    9.71    9.65    9.56

  • RepetierSupportRepetierSupport
    I will make a video tutorial and enhance the z-probing manual at:
  • RepetierSupportRepetierSupport
    The video tutorial is now available:
  • joehojoeho
    Hi i follow the video you post up ,

    everything good till after the  measure Heights

    in Measure Heights i use 7x7 pt
     so i use G29 , but i got 3 point only , how do i  get 7x7 point Zcorrection?
  • RepetierSupportRepetierSupport
    Open "Create Height Map", there you can set 7 for X points and Y points.
  • LarsLars
    Hi i follow the video you post up ,

    everything good till after the  measure Heights

    in Measure Heights i use 7x7 pt
     so i use G29 , but i got 3 point only , how do i  get 7x7 point Zcorrection?
    Are you sure that you, when you downloaded the firmware, remembered to actually tick this auto correct option?

    Check that in Configuration.h you have something like:

    #define DISTORTION_CORRECTION 1
    #define DISTORTION_CORRECTION_POINTS 5
    #define DISTORTION_CORRECTION_R 100
    #define DISTORTION_PERMANENT 1
    #define DISTORTION_UPDATE_FREQUENCY 15
    #define DISTORTION_START_DEGRADE 0.5
    #define DISTORTION_END_HEIGHT 1
    #define DISTORTION_EXTRAPOLATE_CORNERS 1

    If this is not enabled it will just do 3 points - Im just thinking you might accidentally have forgotten to tick it when you re-downloaded. 
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