0.005mm skipped at each probe

I just installed a genuine BL-Touch in replacement of an inprecise chinese clone.

It seem to be very precise but the bed is coming up by 0.005mm increment at each probe and I don't understand what can cause this error. When I move multiple times up and down from UI here is no glitch (piece of paper between bed and nozzle).

Here are my Z-Probing parameters
// #################### Z-Probing #####################

#define Z_PROBE_Z_OFFSET 0
#define Z_PROBE_Z_OFFSET_MODE 0
#define UI_BED_COATING 0
#define FEATURE_Z_PROBE 1
#define EXTRUDER_IS_Z_PROBE 0
#define Z_PROBE_DISABLE_HEATERS 0
#define Z_PROBE_BED_DISTANCE 10
#define Z_PROBE_PIN ORIG_Z_MIN_PIN
#define Z_PROBE_PULLUP 1
#define Z_PROBE_ON_HIGH 1
#define Z_PROBE_X_OFFSET -36
#define Z_PROBE_Y_OFFSET 0
#define Z_PROBE_WAIT_BEFORE_TEST 0
#define Z_PROBE_SPEED 10
#define Z_PROBE_XY_SPEED 350
#define Z_PROBE_SWITCHING_DISTANCE 6
#define Z_PROBE_REPETITIONS 1
#define Z_PROBE_USE_MEDIAN 0
#define Z_PROBE_HEIGHT 3.31
#define Z_PROBE_DELAY 0
#define Z_PROBE_START_SCRIPT "M340 P0 S647"
#define Z_PROBE_FINISHED_SCRIPT "M340 P0 S1473"
#define Z_PROBE_RUN_AFTER_EVERY_PROBE ""
#define Z_PROBE_REQUIRES_HEATING 0
#define Z_PROBE_MIN_TEMPERATURE 150
#define FEATURE_AUTOLEVEL 1
#define FEATURE_SOFTWARE_LEVELING 0
#define Z_PROBE_X1 20
#define Z_PROBE_Y1 20
#define Z_PROBE_X2 290
#define Z_PROBE_Y2 20
#define Z_PROBE_X3 20
#define Z_PROBE_Y3 290
#define BED_LEVELING_METHOD 1
#define BED_CORRECTION_METHOD 0
#define BED_LEVELING_GRID_SIZE 7
#define BED_LEVELING_REPETITIONS 5

Here is a log output of multiple G30
19:28:56.131: Slow command added:G28
19:28:56.131: N19 G28
19:28:56.134: ok 19
19:29:10.254: busy:processing (7)
19:29:10.344: X:-4.00 Y:-3.00 Z:0.000 E:0.0000
19:29:34.368: wait (25)
19:29:35.216: N20 G1 Z7 X155 Y155 F18000
19:29:35.220: ok 20
19:29:39.403: wait (4)
19:29:40.031: N21 G30 P1
19:29:40.033: ok 21
19:29:42.032: Z-probe:6.995 X:155.00 Y:155.00
19:29:43.032: wait (2)
19:29:43.743: N22 G30 P1
19:29:43.749: ok 22
19:29:45.379: Z-probe:6.990 X:155.00 Y:155.00
19:29:46.407: wait (2)
19:29:46.740: N23 G30 P1
19:29:46.743: ok 23
19:29:48.369: Z-probe:6.985 X:155.00 Y:155.00
19:29:49.393: wait (2)
19:29:49.761: N24 G30 P1
19:29:49.766: ok 24
19:29:51.458: Z-probe:6.980 X:155.00 Y:155.00
19:29:52.453: wait (2)
19:29:53.115: N25 G30 P1
19:29:53.121: ok 25
19:29:54.784: Z-probe:6.975 X:155.00 Y:155.00
19:29:55.784: wait (2)
19:29:56.061: N26 G30 P1
19:29:56.066: ok 26
19:29:57.770: Z-probe:6.975 X:155.00 Y:155.00
19:29:58.769: wait (2)
19:29:59.684: N27 G30 P1
19:29:59.687: ok 27
19:30:01.289: Z-probe:6.970 X:155.00 Y:155.00
19:30:02.288: wait (2)
19:30:02.483: N28 G30 P1
19:30:02.489: ok 28
19:30:04.086: Z-probe:6.965 X:155.00 Y:155.00
19:30:04.086: wait
19:30:05.016: N29 G30 P1
19:30:05.020: ok 29
19:30:06.618: Z-probe:6.955 X:155.00 Y:155.00
19:30:06.618: wait
19:30:07.242: N30 G30 P1
19:30:07.245: ok 30
19:30:08.842: Z-probe:6.955 X:155.00 Y:155.00
19:30:08.842: wait
19:30:09.482: N31 G30 P1
19:30:09.485: ok 31
19:30:11.079: Z-probe:6.945 X:155.00 Y:155.00
19:30:11.079: wait
19:30:12.053: N32 G30 P1
19:30:12.058: ok 32
19:30:13.651: Z-probe:6.940 X:155.00 Y:155.00
19:30:13.651: wait
19:30:14.499: N33 G30 P1
19:30:14.528: ok 33
19:30:16.117: Z-probe:6.940 X:155.00 Y:155.00
19:30:16.121: wait
19:30:16.416: N34 G30 P1
19:30:16.481: ok 34
19:30:18.075: Z-probe:6.935 X:155.00 Y:155.00
19:30:18.075: wait
19:30:18.096: N35 G30 P1
19:30:18.099: ok 35
19:30:19.673: Z-probe:6.930 X:155.00 Y:155.00
19:30:19.673: wait
19:30:19.702: N36 G30 P1
19:30:19.705: ok 36
19:30:21.174: N37 G30 P1
19:30:21.295: Z-probe:6.925 X:155.00 Y:155.00
19:30:21.295: ok 37
19:30:22.477: N38 G30 P1
19:30:22.884: Z-probe:6.915 X:155.00 Y:155.00
19:30:22.884: ok 38
19:30:22.977: N39 G30 P1
19:30:23.375: N40 G30 P1
19:30:23.702: N41 G30 P1
19:30:23.935: N42 G30 P1
19:30:24.191: N43 G30 P1
19:30:24.406: N44 G30 P1
19:30:24.523: Z-probe:6.910 X:155.00 Y:155.00
19:30:24.523: ok 39
19:30:24.605: N45 G30 P1
19:30:24.799: N46 G30 P1
19:30:25.008: N47 G30 P1
19:30:25.192: N48 G30 P1
19:30:26.104: Z-probe:6.905 X:155.00 Y:155.00
19:30:26.104: ok 40
19:30:26.104: N49 G30 P1
19:30:27.665: Z-probe:6.900 X:155.00 Y:155.00
19:30:27.665: ok 41
19:30:27.665: N50 G30 P1
19:30:29.229: Z-probe:6.900 X:155.00 Y:155.00
19:30:29.229: ok 42
19:30:29.230: N51 G30 P1
19:30:30.786: Z-probe:6.895 X:155.00 Y:155.00
19:30:30.790: ok 43
19:30:30.790: N52 G30 P1
19:30:32.346: Z-probe:6.890 X:155.00 Y:155.00
19:30:32.347: ok 44
19:30:32.347: N53 G30 P1
19:30:33.903: Z-probe:6.880 X:155.00 Y:155.00
19:30:33.907: ok 45
19:30:33.907: N54 G30 P1
19:30:35.460: Z-probe:6.880 X:155.00 Y:155.00
19:30:35.463: ok 46
19:30:35.464: N55 G30 P1
19:30:37.016: Z-probe:6.875 X:155.00 Y:155.00
19:30:37.016: ok 47
19:30:37.016: N56 G30 P1
19:30:38.634: Z-probe:6.865 X:155.00 Y:155.00
19:30:38.634: ok 48
19:30:38.634: N57 G30 P1
19:30:40.207: Z-probe:6.865 X:155.00 Y:155.00
19:30:40.207: ok 49
19:30:40.207: N58 G30 P1
19:30:41.759: Z-probe:6.860 X:155.00 Y:155.00
19:30:41.760: ok 50
19:30:41.760: N59 G30 P1
19:30:43.308: Z-probe:6.855 X:155.00 Y:155.00
19:30:43.308: ok 51
19:30:43.308: N60 G30 P1
19:30:44.942: Z-probe:6.850 X:155.00 Y:155.00
19:30:44.943: ok 52
19:30:44.943: N61 G30 P1
19:30:46.491: Z-probe:6.845 X:155.00 Y:155.00
19:30:46.491: ok 53
19:30:48.039: Z-probe:6.840 X:155.00 Y:155.00
19:30:48.039: ok 54
19:30:49.657: Z-probe:6.830 X:155.00 Y:155.00
19:30:49.657: ok 55
19:30:51.218: Z-probe:6.825 X:155.00 Y:155.00
19:30:51.218: ok 56
19:30:52.762: Z-probe:6.825 X:155.00 Y:155.00
19:30:52.762: ok 57
19:30:54.302: Z-probe:6.815 X:155.00 Y:155.00
19:30:54.302: ok 58
19:30:55.842: Z-probe:6.815 X:155.00 Y:155.00
19:30:55.842: ok 59
19:30:57.378: Z-probe:6.805 X:155.00 Y:155.00
19:30:57.378: ok 60
19:30:58.914: Z-probe:6.800 X:155.00 Y:155.00
19:30:58.918: ok 61
19:31:00.451: Z-probe:6.795 X:155.00 Y:155.00

Comments

  • You should not repeat G30 P1 - P1 is activate z probe and do not deactivate. Omit it, or use it for first and then use P0 to not reactivate and P2 after last test to disable.

    Please try the dev version. Have lately fixed some autoleveling issues and hope that was part of it.
  • Awesome, multiple G30 are all within 6.992 et 7.002 with dev version.
  • Great so bug fixed:-)
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