Heightmap lost adjustments of G32 ...

Veti

can you post your new bed.g? and which firmware version are you running?

Tobs94

Veti

please update to 2.05 and retry

Tobs94

1.2.2020, 16:11:06 G29
36 points probed, min error -0.125, max error 0.820, mean 0.377, deviation 0.242
Height map saved to file heightmap.csv
1.2.2020, 16:09:29 G32
Leadscrew adjustments made: -0.313 -0.129 -0.144, points used 3, deviation before 0.202 after 0.000
1.2.2020, 16:08:51 G32
Leadscrew adjustments made: -0.179 -0.097 -0.158, points used 3, deviation before 0.143 after 0.000
1.2.2020, 16:08:12 G32
Leadscrew adjustments made: -0.231 -0.135 -0.178, points used 3, deviation before 0.180 after 0.000

Veti

@Tobs94 said in Heightmap lost adjustments of G32 ...:

Leadscrew adjustments made: -0.313 -0.129 -0.144, points used 3, deviation before 0.202 after 0.000
1.2.2020, 16:08:51 G32
Leadscrew adjustments made: -0.179 -0.097 -0.158, points used 3, deviation before 0.143 after 0.000
1.2.2020, 16:08:12 G32
Leadscrew adjustments made: -0.231 -0.135 -0.178, points used 3, deviation before 0.180 after 0.000

not that easy to see a trend but the deviation seems to be increasing, suggesting that your motor cabling does not correspond to the points defined.

You must use the M671 command to define the X and Y coordinates of the leadscrews. The M671 command must come after the M584 command and must specify the same number of X and Y coordinates as the number of motors assigned to the Z axis in the M584 command; and these coordinates must be in the same order as the driver numbers of the associated motors in the M584 command

Tobs94

@Veti

i checked that for 100%

was testing and swaped front left and rear mid and now the test really starts to get bigger differences

Veti

@Tobs94 said in Heightmap lost adjustments of G32 ...:

was testing and swaped front left and rear mid and now the test really starts to get bigger differences

there are 6 different posibilities to adjust 3 wires.

droftarts

@Tobs94 First, if you have not done so, update your firmware to RRF 2.05. https://github.com/dc42/RepRapFirmware/releases/tag/2.05

Then, check your Z motors are connected to the correct drivers. From your config.g:

M584 X0 Y1 Z6:7:8 E3                                   ; set drive mapping
M671 X-15:173.5:362 Y118:374:118 S4                         ; leadscrews at rear left, front middle and rear right
...
; Axis Limits
M208 X0 Y0 Z0 S1                                   ; set axis minima
M208 X340 Y340 Z300 S0                             ; set axis maxima

Gives:

Does this look correct?

Ian

Tobs94

Yes that is exactly how it looks like.

@droftarts

Tobs94

7.2.2020, 15:44:15 G32
Leadscrew adjustments made: -0.141 -0.114 -0.166, points used 3, deviation before 0.133 after 0.000
7.2.2020, 15:43:27 G32
Leadscrew adjustments made: -0.138 -0.151 -0.140, points used 3, deviation before 0.144 after 0.000
7.2.2020, 15:41:24 G32
Leadscrew adjustments made: -0.069 -0.167 -0.206, points used 3, deviation before 0.141 after 0.000
7.2.2020, 15:40:40 G32
Leadscrew adjustments made: -0.133 -0.130 -0.066, points used 3, deviation before 0.122 after 0.000
7.2.2020, 15:39:26 G32
Leadscrew adjustments made: -0.349 0.038 -0.080, points used 3, deviation before 0.176 after 0.000
7.2.2020, 15:38:36 G32
Leadscrew adjustments made: -1.094 0.434 -0.084, points used 3, deviation before 0.524 after 0.000
7.2.2020, 15:37:52 G32
Leadscrew adjustments made: -2.909 2.198 -0.556, points used 3, deviation before 1.563 after 0.000

still the same problem.. made me so mad. there must be 1 fault anywhere.

bed.g homeall.g config.g

(Next Problem my Fan is now always on and they did not get shown on Web Control after update)

Thanks for help

@Veti @droftarts

Tobs94

and my Stall detection did not react anymore since update. No Change between -60 and +60

tobias_munich

@Tobs94 .. I have a similar result, if i use z- axis AND bed compensation in combination. i have a double z-axis configuration.

if I run G29 only the bed don't have this "z-delta", ...its not "crooked"

if I run the Z-axis calibration more often ( 3 times) the results are better but not as expected.

this is my bed.g

T0
G10 P0 S180			; Set extruder temp (tool 0) 
M140 S60			; Set bed temp 
M116				; Wait for temps to be reached
G28
G30 P0 X05.0 Y140 H0 Z-99999
G30 P1 X290 Y140 H0 Z-99999 S2
G28
G30 P0 X05.0 Y140 H0 Z-99999
G30 P1 X290 Y140 H0 Z-99999 S2
G28
G30 P0 X05.0 Y140 H0 Z-99999
G30 P1 X290 Y140 H0 Z-99999 S2
G28
G29

droftarts

@Tobs94 As @tobias_munich says, clear any mesh bed transform BEFORE running G32. Otherwise it's just levelling it to the mesh! Your bed.g:

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu Jan 30 2020 17:41:07 GMT+0100 (Mitteleuropäische Normalzeit)
;M561 ; clear any bed transform
;G29  ; probe the bed and enable compensation

G28 ; home
M401 ; deploy Z probe (omit if using bltouch)
G30 P0 X300 Y110 Z-99999 ; probe near a leadscrew
G30 P1 X20 Y110 Z-99999 ; probe near a leadscrew
G30 P2 X160 Y260 Z-99999 S3 ; probe near a leadscrew and calibrate 3 motors
M402 ; retract probe (omit if using bltouch)

Uncomment M561 in bed.g. This will clear the bed mesh before probing. You can also comment out or delete the M401 and M402, and it's a good idea to do a single G30 in the centre of the bed after running G32, to set Z datum. Run G29 after this to generate new bed mesh (or not, because it should be flat then).

Ian

droftarts

@Tobs94 For M915 stall detection, you've copied the two examples from https://duet3d.dozuki.com/Wiki/Gcode#Section_M915_Configure_motor_stall_detection ... twice! It will be using the last M915 command, M915 X Y S2 F1 R0.
For more detail on setting up stall detection, see https://duet3d.dozuki.com/Wiki/Stall_detection_and_sensorless_homing

Ian