Z-probe autoleveling problem

mystique

here is what i am using:

#define FEATURE_AUTOLEVEL 1
#define FEATURE_SOFTWARE_LEVELING 0
#define Z_PROBE_X1 8
#define Z_PROBE_Y1 8
#define Z_PROBE_X2 208
#define Z_PROBE_Y2 8
#define Z_PROBE_X3 8
#define Z_PROBE_Y3 208
#define BED_LEVELING_METHOD 1
#define BED_CORRECTION_METHOD 0
#define BED_LEVELING_GRID_SIZE 1
#define BED_LEVELING_REPETITIONS 1

When i use the 3 point leveling (#define FEATURE_AUTOLEVEL 0) it goes to its probe locations fine, but when i set it to the above for a 4 point (grid size 1) it does not work right, it will go to a not quite home position (x8,y8) then zips to the max x and y and just keeps trying to go more till i hit the estop?

Repetier

Please have a look at eeprom positions. These look good, but eeprom may contain the wrong points not spanning a square but a parallelogram.

mystique

Here is what i have from in repitier

Repetier

Also looks good. Can you a provide a log output from your autoleveling. Often this helps to see better what is going on.

MartinH

Also can you tell us what size you have for Xmax and Ymax

mystique

Good: 3 point leveling
09:03:37.851 : N25 M322*23
09:03:37.851 : N26 G28*39
09:03:37.851 : N27 G32 S2*108
09:03:37.851 : N28 G1 X110 Y125 Z5 F5000*57
09:03:37.851 : Info:Autolevel matrix reset
09:03:47.305 : X:-27.00 Y:0.00 Z:247.895 E:0.0000
09:04:15.900 : Info:Autoleveling disabled
09:04:26.447 : Z-probe:3.820 X:8.00 Y:8.00
09:04:39.667 : Z-probe:4.800 X:208.00 Y:8.00
09:04:50.120 : Z-probe:4.010 X:8.00 Y:208.00
09:04:50.120 : plane: a = 0.0049 b = 0.0010 c = 3.7732
09:04:50.136 : Transformation matrix: 0.999988 0.000000 -0.004900 -0.000005 1.000000 -0.000950 0.004900 0.000950 0.999988
09:04:50.136 : Printer height:247.59
09:04:50.136 : CurrentZ:3.77 atZ:4.08
09:04:50.136 : Info:Autoleveling enabled
09:04:51.120 : X:7.98 Y:208.00 Z:4.007 E:0.0000

Not so good 4 point
09:29:45.343 : N16 M322*23
09:29:45.343 : N17 G28*37
09:29:45.343 : N18 G32 S2*96
09:29:45.343 : N19 G1 X110 Y125 Z5 F5000*59
09:29:45.343 : Info:Autolevel matrix reset
09:29:48.671 : X:-27.00 Y:0.00 Z:248.000 E:0.0000
09:30:17.282 : Z correction disabled
09:30:25.751 : Printer reset detected - initalizing         'me hitting the e-stop as it maxes out the x and y
09:30:25.751 : start
09:30:25.751 : Detected EEPROM version:19


min/max settings:
09:35:25.150 : EPR:3 133 -27.000 X min pos [mm]
09:35:25.181 : EPR:3 137 0.000 Y min pos [mm]
09:35:25.212 : EPR:3 141 0.000 Z min pos [mm]
09:35:25.243 : EPR:3 145 265.000 X max length [mm]
09:35:25.275 : EPR:3 149 235.000 Y max length [mm]
09:35:25.321 : EPR:3 153 248.000 Z max length [mm]