Grid bed compensation
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In the M558 command, Z16 is the same as Z1 and means that the Z probe is used for Z homing. H3 is the dive height, which means that when you use G30 with defined XY coordinates to probe the bed (and also G29 in the 1.17 dev build), probing starts 3mm + the probe trigger height above where the bed is expected to be.
In the G31 command, the Z parameter defines the trigger height of the Z probe.
The documentation for how gcodes behave in RRF is the reprap.org wiki at http://reprap.org/wiki/G-code. Let me know if you think particular parts need to be clarified.
HTH David
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These are my results bit concerned by one reading noticed whilst it was probing that the LED on the IR Board lit but it kept on moving down (did this just once towards the end of the third row)
David would appreciate it if you could cast you eyes over this and give any advice that you may have.
RepRapFirmware height map file v1
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
-140.00,140.10,-140.00,140.10,150.00,20.00,15,15
0,0,0,0,0,-0.123,-0.137,-0.189,-0.191,-0.205,0,0,0,0,0
0,0,0,-0.051,-0.052,-0.086,-0.113,-0.152,-0.211,-0.237,-0.263,-0.285,0,0,0
0,0,0.053,0.026,-0.016,-0.051,-0.051,-0.123,-0.175,-0.203,-0.254,-0.264,-3.224,0,0
0,0.140,0.072,0.038,0.001,-0.061,-0.051,-0.039,-0.174,-0.252,-0.265,-0.235,-0.237,-0.318,0
0,0.177,0.129,0.086,0.112,-0.089,-0.062,-0.128,-0.148,-0.213,-0.202,-0.202,-0.286,-0.288,0
0.304,0.226,0.178,0.123,0.124,0.042,-0.087,-0.422,-0.153,-0.212,-0.180,-0.223,-0.213,-0.347,-0.332
0.308,0.249,0.366,0.125,0.174,0.077,-0.073,0.174,-0.091,-0.128,-0.087,-0.161,-0.172,-0.203,-0.173
0.360,0.313,0.303,0.186,0.190,0.101,0.004,0.158,-0.071,-0.111,-0.148,-0.190,-0.175,-0.154,-0.225
0.338,0.299,0.250,0.213,0.173,0.139,0.063,0.162,0.012,-0.074,-0.125,-0.185,-0.161,-0.163,-0.187
0.400,0.375,0.296,0.274,0.236,0.197,0.110,-0.001,0.026,-0.062,-0.075,-0.124,-0.142,-0.113,-0.115
0,0.234,0.180,0.214,0.216,0.191,0.127,0.086,0.061,0.005,-0.025,-0.024,-0.071,-0.061,0
0,0.438,0.389,0.312,0.313,0.236,0.125,0.127,0.102,0.061,0.000,-0.121,-0.050,-0.040,0
0,0,0.371,0.300,0.264,0.211,0.215,0.237,0.127,0.121,0.102,-0.046,-0.026,0,0
0,0,0,0.387,0.324,0.339,0.226,0.226,0.150,0.153,0.100,0.049,0,0,0
0,0,0,0,0,0.302,0.275,0.229,0.175,0.114,0,0,0,0,0Looking at the figures it would suggest that the bed is not flat however it is 6mm thick Ecocast Tooling plate with Printbite on it Think I will have to get a straight edge on it and check it?
Doug
PS not always repeatable run again I gat the following
RepRapFirmware height map file v1
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
-140.00,140.10,-140.00,140.10,150.00,20.00,15,15
0,0,0,0,0,-0.139,-0.188,-0.139,-0.202,-0.224,0,0,0,0,0
0,0,0,-0.058,-0.066,-0.109,-0.141,-0.129,-0.186,-0.198,-0.191,-0.176,0,0,0
0,0,0.013,-0.008,-0.053,-0.071,-0.087,-0.113,-0.162,-0.190,-0.199,-0.267,-0.237,0,0
0,0.124,0.076,0.025,-0.026,-0.054,-0.078,-0.137,-0.127,-0.165,-0.201,-0.189,-0.227,-0.226,0
0,0.198,0.120,0.047,0.089,-0.074,-0.097,-0.153,-0.188,-0.477,-0.190,-0.199,-0.237,-0.211,0
0.312,0.229,0.198,0.098,0.097,0.004,-0.089,-0.516,-0.150,-0.209,-0.197,-0.183,-0.216,-0.296,-0.250
0.287,0.263,0.292,0.100,0.190,0.015,-0.102,-0.039,-0.125,-0.149,-0.137,-0.198,-0.188,-0.220,-0.192
0.378,0.289,0.328,0.172,0.133,0.078,-0.086,0.134,-0.100,-0.150,-0.176,-0.234,-0.187,-0.199,-0.221
0.360,0.291,0.260,0.185,0.111,0.108,0.024,0.073,-0.024,-0.116,-0.187,-0.252,-0.201,-0.215,-0.187
0.447,0.397,0.336,0.276,0.180,0.164,0.073,-0.050,-0.049,-0.109,-0.151,-0.172,-0.211,-0.175,-0.161
0,0.337,0.289,0.227,0.179,0.127,0.086,0.034,-0.039,-0.060,-0.113,-0.108,-0.171,-0.153,0
0,0.478,0.397,0.374,0.270,0.141,0.085,0.074,0.037,-0.048,-0.080,-0.187,-0.126,-0.175,0
0,0,0.373,0.364,0.265,0.161,0.139,0.212,0.040,0.046,-0.008,-0.149,-0.115,0,0
0,0,0,0.346,0.295,0.273,0.148,0.136,0.084,0.024,-0.055,-0.078,0,0,0
0,0,0,0,0,0.240,0.178,0.084,0.090,0.004,0,0,0,0,0Which to my untrained Eye looks much better Think I may have a wiring Crosstalk Issue to be honest Need to maybe re-wire the Hot End area using Screened Cable?
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Doug, I think you may have a bad connection between the IR sensor output and the Duet. I can't think why else the head would continue to move down after the LED has lit. I have a long unshielded cable between the hot end and the Duet too and it doesn't cause me any problems.
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Thats what I am starting to think Myself (and with the PT100 as Well) will get some Shielded cable tomorrow and re-do those connections (If I have to re-do them I may as well use Shielded stuff)
Doug
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So Do I still need to run G32? after or before G29
orJust a G29
then A G28 to home then print? -
Does the grid fade after a certain Z height or is it maintained all the way up?
How can you tell if the Grid compensation is active? -
Here is my first grid result. had a error near the end when it probed on top of a clip holding down the glass
RepRapFirmware height map file v1 generated at 0116-10-27 16:15
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
20.00,280.00,20.00,280.00,-1.00,28.00,10,10
0.002,0.080,0.121,0.163,0.171,0.142,0.100,-0.004,-0.135,-0.278
0.026,0.113,0.197,0.275,0.271,0.262,0.221,0.118,0.019,-0.161
0.039,0.141,0.225,0.283,0.314,0.280,0.257,0.180,0.103,-0.061
0.019,0.165,0.236,0.257,0.284,0.306,0.275,0.216,0.114,-0.016
0.019,0.139,0.220,0.277,0.295,0.296,0.276,0.235,0.134,0.001
-0.019,0.081,0.179,0.224,0.264,0.261,0.279,0.216,0.141,0.016
-0.095,0.031,0.105,0.179,0.223,0.243,0.216,0.194,0.120,0.015
-0.214,-0.039,0.027,0.098,0.173,0.197,0.183,0.119,0.065,-0.010
-0.279,-0.178,-0.094,0.027,0.070,0.134,0.125,0.046,0.005,-0.104
-0.395,-0.299,-0.212,-0.136,-0.054,-0.034,-1.277,-1.320,-1.651,-1.608 -
You mentioned that you cant load a grid yet.
so if i restart the Duet Wifi G29 S1 wont load current csv?
G29 will just recreate a new mesh for now. -
You mentioned that you cant load a grid yet.
so if i restart the Duet Wifi G29 S1 wont load current csv?
G29 will just recreate a new mesh for now.That's correct. I should get time to implement loading the height map from file later this week.
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Works like a charm, had to change dive height to 5mm.
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Where do you change this?
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Where do you change this?
If you mean the dive height, see http://reprap.org/wiki/G-code#M558:_Set_Z_probe_type.
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I am trying to run the grid bed compensation, however when i run the G29 I get:
7:10:20 PM G29 Error: No valid grid defined for G29 bed probing
7:04:32 PM G29 Error: No valid grid defined for G29 bed probingI have placed M557 X10:250 Y40:260 S40 in my config.g.
Would like to get this working but do not know enough about it -
I am trying to run the grid bed compensation, however when i run the G29 I get:
7:10:20 PM G29 Error: No valid grid defined for G29 bed probing
7:04:32 PM G29 Error: No valid grid defined for G29 bed probingI have placed M557 X10:250 Y40:260 S40 in my config.g.
Would like to get this working but do not know enough about itI was able to run it but had to use the PanelDue to run it it would not run over the wifi??
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I had no issue running over wifi
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I am trying to run the grid bed compensation, however when i run the G29 I get:
7:10:20 PM G29 Error: No valid grid defined for G29 bed probing
7:04:32 PM G29 Error: No valid grid defined for G29 bed probingI have placed M557 X10:250 Y40:260 S40 in my config.g.
Would like to get this working but do not know enough about itI was able to run it but had to use the PanelDue to run it it would not run over the wifi??
Perhaps you didn't restart the Duet after editing config.g?
You can run M557 with no parameters to check that the grid is defined.
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I am trying to run the grid bed compensation, however when i run the G29 I get:
7:10:20 PM G29 Error: No valid grid defined for G29 bed probing
7:04:32 PM G29 Error: No valid grid defined for G29 bed probingI have placed M557 X10:250 Y40:260 S40 in my config.g.
Would like to get this working but do not know enough about itI was able to run it but had to use the PanelDue to run it it would not run over the wifi??
Perhaps you didn't restart the Duet after editing config.g?
You can run M557 with no parameters to check that the grid is defined.
That must have been it. I thought I had restarted. running fine this morning.
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Erm!!!
Bed probe has been working great with grid of S40 and S20,
Though I would try a "high res" probe to see how flat the bed was rather than just how level
so tried a S15 grid which at 100 points maxes the grid on my duet 0.6
an got..
RepRapFirmware height map file v1 generated at 0116-10-30 12:17
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
40.00,180.00,30.00,170.00,-1.00,15.00,10,10
0.017,0.103,0.102,0.094,0.089,0.092,0.129,0.105,0.100,0.112
0.025,0.116,0.067,0.094,0.125,0.118,0.020,0.086,0.049,0.064
0.084,0.119,0.149,0.122,0.123,0.112,0.087,0.052,0.059,0.129
0.061,0.081,0.111,0.091,0.147,0.123,0.101,0.082,0.052,0.092
0.156,0.143,0.127,-0.016,0.100,0.094,0.056,0.081,0.059,0.038
0.201,0.144,0.116,0.030,0.062,-0.057,0.008,-0.012,0.029,0.035
0.200,0.139,-0.027,0.060,0.057,-0.079,-0.069,-0.030,-0.026,0.001
0.185,0.103,-0.002,0.223,0.030,0.028,0.010,-0.002,-0.021,-0.005
0.116,0.126,0.135,0.086,0.082,-0.036,-0.295,-0.069,-0.100,-0.049
-2.146,0.014,0.117,54548584975029841690624.000,-54548584975029841690624.000,54574818442859274829824.000,2572610785247232.000,2155874671919104.000,12844309018214137856.000,-0.126Something rather stage happened at the end
This is reproducable, a second run gave
RepRapFirmware height map file v1 generated at 0116-10-30 12:26
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
40.00,180.00,30.00,170.00,-1.00,15.00,10,10
0.005,0.088,0.093,0.082,0.086,0.084,0.114,0.098,0.087,0.089
0.014,0.095,0.046,0.086,0.116,0.095,0.001,0.082,0.031,0.042
0.064,0.105,0.133,0.114,0.112,0.093,0.080,0.031,0.051,0.122
0.057,0.077,0.094,0.086,0.132,0.116,0.088,0.064,0.035,0.085
0.140,0.137,0.120,-0.040,0.087,0.086,0.047,0.076,0.055,0.026
0.198,0.136,0.113,0.024,0.059,-0.053,-0.004,-0.017,0.024,0.022
0.192,0.133,-0.047,0.039,0.044,-0.099,-0.082,-0.038,-0.037,-0.002
0.164,0.088,-0.017,0.210,0.014,0.016,-0.004,-0.020,-0.039,-0.014
0.096,0.117,0.126,0.081,0.060,-0.051,-0.321,-0.093,-0.114,-0.047
0.047,0.023,0.097,54548584975029841690624.000,-54548584975029841690624.000,54574818442859274829824.000,2572610785247232.000,2155874671919104.000,12844309018214137856.000,-0.146Reducing the grid slightly to 9x9 works as expected
RepRapFirmware height map file v1 generated at 0116-10-30 12:34
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
40.00,180.00,30.00,170.00,-1.00,16.00,9,9
0.013,0.065,0.107,0.113,0.109,0.133,0.147,0.118,0.113
0.077,0.058,0.083,0.092,-0.157,0.064,-0.177,0.131,0.131
0.122,0.163,0.134,0.129,0.096,0.237,0.030,0.086,0.107
0.032,0.005,0.052,0.015,0.090,0.085,0.015,0.141,0.071
0.144,0.070,0.013,-0.023,0.116,-0.003,0.020,0.003,-0.013
0.123,0.077,0.119,0.086,0.061,0.041,0.044,0.055,-0.003
0.085,0.115,0.112,0.054,-0.171,-0.390,0.057,0.007,-0.015
0.106,0.155,0.076,0.085,0.057,0.022,-0.007,-0.053,-0.015
0.135,0.130,0.071,0.080,0.065,0.032,-0.039,-0.054,-0.043Looks like the memory block for the 10x10 grid might be a tad too small and the end is getting overwritten ?
Chris
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Chris, is that on a Duet WiFi or a wired Duet? Please run M122 and report the "Never used memory".
The date looks odd too.
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Its on a wired duet 0.6
Date is as it was in the heightmap file, just a cut and paste.
