Auto calibration error

dc42

@yatinsd said in Auto calibration error:

Also when it homes for auto calibration not all axis are homing only one i have to do them manually first.

See https://duet3d.dozuki.com/Wiki/FAQ#Section_When_I_try_to_home_my_printer_sometimes_the_carriage_or_carriages_move_only_part_of_the_way_towards_the_homing_switches_and_I_have_to_command_it_to_home_again_to_make_it_go_all_the_way. The failed homing may explain the problem.

yatinsd

@dc42 now it homes but still there is this probing error.

dc42

Do you get probing error messages the first time you run auto calibration? I was under the impression that you only got them the second and subsequent times that you ran it.

yatinsd

@dc42 i got the error only the second time, first time it ran fine with below results:
Calibrated 6 factors using 16 points, deviation before 3.775 after nan

dc42

@yatinsd, please sort out the homing issue first - see my earlier reply. Then see whether the auto calibration problem persists.

yatinsd

@dc42 yes I have already sorted homing issue, but auto calibration problem is still persisting!

dc42

Does your config-override.g file have M665 and/or M666 commands in it? If so, delete them.

yatinsd

@dc42 there is no config override file being created after auto calibration! can this be due to the macro files that i deleted accidently?

dc42

Auto calibration does not in itself create a config-override.g file; but you can send M500 after running auto calibration to save the values.

So was there a config-override.g file on your system, or not?

yatinsd

@dc42 I cannot see any such file!

yatinsd

@dc42 I tried M500 command still the same issue the when home after 1st auto calibration the head position goes random for xyz. Though now the config override file is created.

yatinsd

@dc42

dc42

Please can you change the S parameter on the final G30 command to S-1. This will cause the firmware to report the height errors without making any changes. Then report the height errors here.

yatinsd

@dc42 I did the same as you said but the problem has just dissapeared now, i dont know how( i am able to auto calibrate it one after other). But there is one peculiar thing happening that ( I deleted the config-override file before i started the auto-calibration) now when i try and pass the M500 command no config override file is generated.

yatinsd

@dc42 it is now showing the config override file as well!

dc42

@yatinsd said in Auto calibration error:

@dc42 it is now showing the config override file as well!

I'm glad it's now working for you. If it goes on working, please mark this thread as Solved by editing the title.

Duet Web Control doesn't update its file lists automatically. You often need to click the Refresh button to see the latest changes. This may be why you didn't see the config-override.g file at first.

yatinsd

@dc42 0_1542832005147_config-override.g This file is generated after auto calibration 8 factor. when i input S1 it is fine, but when i use 8 factor calibration head values go random(read 999.99) all of a sudden. I need to do 8 factor because my bed is showing convex(4.5mm error at extreme edge) still but isnt(checked seperately).

dc42

I suggest you connect a PC running e.g. YAT or Pronterface to your printer via USB, send M111 S1 P4 to enable Move debug, then run auto calibration. It will send details of the calibration calculations to the PC. If the auto calibration results in nans and you post that output here, I may be able to work out what is going wrong.

yatinsd

@dc42 following is the result after the procedure:
Connecting...
[ERROR] Could not connect to COM5 at baudrate 115200:
Serial error: could not open port 'COM5': WindowsError(5, 'Access is denied.')
Connecting...
[ERROR] Could not connect to COM5 at baudrate 115200:
Serial error: could not open port 'COM5': WindowsError(5, 'Access is denied.')
Connecting...
ok T0:19.5 /0.0 B:2000.0 /0.0
Printer is now online.
ok T0:19.4 /0.0 B:2000.0 /0.0
ok T0:19.4 /0.0 B:2000.0 /0.0

M111 S1 P4
SENDING:M111 S1 P4
Debugging enabled for modules: Move(4)
Debugging disabled for modules: Platform(0) Network(1) Webserver(2) GCodes(3) Heat(5) DDA(6) Roland(7) Scanner(8) PrintMonitor(9) Storage(10) PortControl(11) DuetExpansion(12) FilamentSensors(13) WiFi(14) Display(15)
ok T0:19.5 /0.0 B:2000.0 /0.0
ok T0:19.4 /0.0 B:2000.0 /0.0
g32
SENDING:G32
Z probe offsets: 11.502 2.401 2.424 18.805 11.597 5.171 1.926 1.981 5.546 6.321 9.789 10.063 5.115 2.919 2.982 150.000, mean 15.534, deviation from mean 35.015
Stops X0.000 Y0.000 Z0.000 height 342.000 diagonal 218.000 radius 120.000 xcorr 0.00 ycorr 0.00 zcorr 0.00 xtilt 0.000% ytilt 0.000%
Derivative matrix
-0.0232 0.1053 0.9178 0.0959 -0.0759 -0.1918 -0.3529 -1.2353
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
-0.0266 0.9011 0.1255 0.1235 0.0719 -0.2840 -1.2189 0.2647
0.1564 0.7995 0.0440 0.3918 -0.1515 0.1120 -0.6440 0.5645
0.3978 0.5061 0.0961 0.5762 -0.1694 0.1577 -0.1024 0.4531
0.4966 0.2391 0.2643 0.6292 0.0124 0.0568 0.2554 0.1159
0.3990 0.0698 0.5312 0.5521 0.1950 -0.0108 0.3825 -0.3649
0.1530 0.0171 0.8299 0.3404 0.1681 -0.0178 0.2167 -0.9142
0.0096 0.2584 0.7319 0.4131 0.0065 -0.2275 -0.3529 -0.7353
-0.0461 0.5090 0.5371 0.3413 -0.0025 -0.3890 -0.7860 -0.4853
0.0097 0.7052 0.2850 0.4293 -0.0058 -0.2311 -0.7860 0.0147
0.1827 0.5317 0.2856 0.6097 -0.0474 -0.0549 -0.3529 0.0712
0.2473 0.3623 0.3903 0.6500 0.0070 -0.0510 -0.1186 -0.1000
0.1843 0.2523 0.5634 0.5978 0.0609 -0.0998 -0.0775 -0.3944
0.3333 0.3333 0.3333 0.6593 0.0000 0.0000 0.0000 -0.0000
Normal matrix
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
Solved matrix
nan 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan
0.0000 nan 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan
0.0000 0.0000 nan 0.0000 0.0000 0.0000 0.0000 0.0000 nan
0.0000 0.0000 0.0000 nan 0.0000 0.0000 0.0000 0.0000 nan
0.0000 0.0000 0.0000 0.0000 nan 0.0000 0.0000 0.0000 nan
0.0000 0.0000 0.0000 0.0000 0.0000 nan 0.0000 0.0000 nan
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan 0.0000 nan
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan nan
Solution: nan nan nan nan nan nan nan nan
Residuals: nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan
Expected probe error: nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan
Derivative matrix
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
Normal matrix
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan nan
Solved matrix
nan 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan
0.0000 nan 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan
0.0000 0.0000 nan 0.0000 0.0000 0.0000 0.0000 0.0000 nan
0.0000 0.0000 0.0000 nan 0.0000 0.0000 0.0000 0.0000 nan
0.0000 0.0000 0.0000 0.0000 nan 0.0000 0.0000 0.0000 nan
0.0000 0.0000 0.0000 0.0000 0.0000 nan 0.0000 0.0000 nan
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan 0.0000 nan
0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 nan nan
Solution: nan nan nan nan nan nan nan nan
Residuals: nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan
Expected probe error: nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan
Stops Xnan Ynan Znan height nan diagonal 218.000 radius nan xcorr nan ycorr nan zcorr 0.00 xtilt nan% ytilt nan%
Calibrated 8 factors using 16 points, deviation before 38.306 after nan
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.1 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:18.9 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:18.9 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:18.9 /0.0 B:2000.0 /0.0
ok T0:18.9 /0.0 B:2000.0 /0.0
ok T0:19.0 /0.0 B:2000.0 /0.0
ok T0:18.9 /0.0 B:2000.0 /0.0
[ERROR] Can't read from printer (disconnected?) (SerialException): call to ClearCommError failed
[ERROR] Can't write to printer (disconnected?) (SerialException): WriteFile failed (WindowsError(22, 'The device does not recognize the command.'))
[ERROR] Can't write to printer (disconnected?) (SerialException): WriteFile failed (WindowsError(22, 'The device does not recognize the command.'))
Disconnected.

dc42

@yatinsd said in Auto calibration error:

Z probe offsets: 11.502 2.401 2.424 18.805 11.597 5.171 1.926 1.981 5.546 6.321 9.789 10.063 5.115 2.919 2.982 150.000, mean 15.534, deviation from mean 35.015
Stops X0.000 Y0.000 Z0.000 height 342.000 diagonal 218.000 radius 120.000 xcorr 0.00 ycorr 0.00 zcorr 0.00 xtilt 0.000% ytilt 0.000%
Derivative matrix
-0.0232 0.1053 0.9178 0.0959 -0.0759 -0.1918 -0.3529 -1.2353
nan nan nan nan nan nan nan nan
nan nan nan nan nan nan nan nan
-0.0266 0.9011 0.1255 0.1235 0.0719 -0.2840 -1.2189 0.2647
0.1564 0.7995 0.0440 0.3918 -0.1515 0.1120 -0.6440 0.5645
0.3978 0.5061 0.0961 0.5762 -0.1694 0.1577 -0.1024 0.4531
0.4966 0.2391 0.2643 0.6292 0.0124 0.0568 0.2554 0.1159
0.3990 0.0698 0.5312 0.5521 0.1950 -0.0108 0.3825 -0.3649
0.1530 0.0171 0.8299 0.3404 0.1681 -0.0178 0.2167 -0.9142
0.0096 0.2584 0.7319 0.4131 0.0065 -0.2275 -0.3529 -0.7353
-0.0461 0.5090 0.5371 0.3413 -0.0025 -0.3890 -0.7860 -0.4853
0.0097 0.7052 0.2850 0.4293 -0.0058 -0.2311 -0.7860 0.0147
0.1827 0.5317 0.2856 0.6097 -0.0474 -0.0549 -0.3529 0.0712
0.2473 0.3623 0.3903 0.6500 0.0070 -0.0510 -0.1186 -0.1000
0.1843 0.2523 0.5634 0.5978 0.0609 -0.0998 -0.0775 -0.3944
0.3333 0.3333 0.3333 0.6593 0.0000 0.0000 0.0000 -0.0000

I can see two problems with that data:

Bed probing is giving extremely large height errors, up to 150mm.
The second and third probe points in your bed.g file are unreachable using your current delta parameters. This may be because you are using a Z probe offset from the nozzle. You need to move them closer to the centre.