deutherius / vgb Goto Github PK

Assuming I am doing a cold test, followed by tests at regular heating intervals, and finally a hot test - the script crashes. If I do a single cold/test/hot, I am able to generate the results.

Is there not a way to interpolate the mesh from a given set of data as it's heating up? Seems like it would help drastically.

After generating the meshes and new printer.cfg, the vgb macro keeps requesting meshes that don't exist. For example:

bed_mesh: Unknown profile [38.400000000000006]
bed_mesh: Unknown profile [38.50000000000001]

The script did generate weird bed meshes with large decimals on some temperatures but not on others???

There are bed meshes 38.5 and 38.4. why is it requesting the bed meshes with all the decimals? Why is it even generating bed meshes with more than 1 decimal?

Since

1. We should only be using VGB when frame temp is rising
2. Most people already have (or should ) a sensor wait for chamber temp
3. We have already set up the necessary thermistor and naming etc.

Perhaps including some info or a macro for a temp wait that takes the current frame temp + 1C and include that in PRINT_START would be a nice inclusion. This would ensure that print doesn't start until frame temp is on the rise, even if its not the most elegant solution.

ps...i sing the praises of VGB to anyone I discuss Voron with. The fact that it works, is free, and adds no weight makes it the best solution in my mind. I wont be buying backers.

Any impact for VGB users? I imagine not?

The meshes are all loaded and swapping with frame temp. They look like they should do the job. I'm at a loss as to why it hasn't produced the desired result.

I used the hot mesh after 2 hours. This is the mesh measured at the end of alchemyEngine/measure_thermal_behavior. The cold is taken at my chamber temp print_start threshold of 35C (frame temp of 24C). Thermistor is half way down the rear vertical extrusion.

I'm on a 350 Vroron 2.4.

One thing I am considering is the temp_coeff produced by alchemyEngine/process_frame_expansion.py. It produced a value of .0009. I saw in your depreciated dumb comp that you use a value of 0.03, with a max of 0.1. Can mine really be that low/different....***post script. I tried .03. Also got the same result. I'm wondering if it is even working. The frame compensation appears as if its functioning. Doesn't throw an error, and the query looks as it should. But I don't think it is functioning. I cranked up the temp_coeff: 0.03 producing -0.12mm on a 23min first layer. and it appeared to have no effect. I previously used a manual correction of -0.06mm to correct going into the second layer.

Ill load up the relevant stuff here. Please let me know if you have any ideas.

relevant printer.cfg sections...............................

[include VGB.cfg]

[frame_expansion_compensation]
temp_coeff: 0.0009 ##0.0009
temp_sensor: temperature_sensor ToolHP
z_stepper: stepper_z

[bed_mesh]
speed: 1000
horizontal_move_z: 8

mesh_min: 30, 30
mesh_max: 320,320

fade_start: 999999999
fade_end: 9999999999
probe_count: 7,7
algorithm: bicubic
relative_reference_index: 48 ## For thermal Compensation RRI is set to (x points * y points) - 1, for a 5x5 mesh that is 24

mesh_pps: 2,2 ## needed for adaptive bed meshMacro

[respond] ## needed for adaptive bed meshMacro

[bed_mesh default]
## version = 1
## points =
## 0.020000, -0.030000, -0.050000, -0.025000, -0.025000, 0.002500, 0.022500
## -0.050000, -0.087500, -0.100000, -0.102500, -0.095000, -0.070000, -0.052500
## -0.117500, -0.162500, -0.172500, -0.175000, -0.177500, -0.142500, -0.122500
## -0.155000, -0.195000, -0.212500, -0.212500, -0.202500, -0.170000, -0.142500
## -0.107500, -0.145000, -0.177500, -0.180000, -0.175000, -0.142500, -0.117500
## -0.065000, -0.112500, -0.137500, -0.145000, -0.135000, -0.110000, -0.075000
## 0.002500, -0.037500, -0.067500, -0.067500, -0.062500, -0.042500, 0.000000
## tension = 0.2
## min_x = 30.0
## algo = bicubic
## y_count = 7
## mesh_y_pps = 2
## min_y = 30.0
## x_count = 7
## max_y = 319.98
## mesh_x_pps = 2
## max_x = 319.98
##
## [bed_mesh Full Cold]
## version = 1
## points =
## 0.012500, -0.032500, -0.047500, -0.005000, -0.012500, 0.027500, 0.015000
## -0.022500, -0.057500, -0.062500, -0.065000, -0.055000, -0.010000, -0.020000
## -0.060000, -0.105000, -0.107500, -0.100000, -0.115000, -0.077500, -0.065000
## -0.090000, -0.130000, -0.147500, -0.145000, -0.135000, -0.092500, -0.077500
## -0.050000, -0.087500, -0.117500, -0.120000, -0.112500, -0.075000, -0.055000
## -0.030000, -0.077500, -0.102500, -0.110000, -0.100000, -0.055000, -0.035000
## 0.000000, -0.040000, -0.067500, -0.070000, -0.062500, -0.025000, 0.000000
## tension = 0.2
## min_x = 30.0
## algo = bicubic
## y_count = 7
## mesh_y_pps = 2
## min_y = 30.0
## x_count = 7
## max_y = 319.98
## mesh_x_pps = 2
## max_x = 319.98
##
## [bed_mesh HOT37.1]
## version = 1
## points =
## 0.075000, 0.025000, 0.002500, 0.017500, 0.025000, 0.052500, 0.077500
## -0.027500, -0.065000, -0.085000, -0.085000, -0.075000, -0.052500, -0.030000
## -0.125000, -0.170000, -0.182500, -0.185000, -0.177500, -0.142500, -0.120000
## -0.172500, -0.215000, -0.230000, -0.230000, -0.217500, -0.180000, -0.157500
## -0.132500, -0.170000, -0.202500, -0.200000, -0.187500, -0.160000, -0.132500
## -0.077500, -0.127500, -0.155000, -0.160000, -0.147500, -0.125000, -0.085000
## -0.002500, -0.042500, -0.070000, -0.067500, -0.062500, -0.045000, 0.000000
## tension = 0.2
## mesh_x_pps = 2
## algo = bicubic
## min_x = 30.0
## min_y = 30.0
## y_count = 7
## mesh_y_pps = 2
## x_count = 7
## max_x = 319.98
## max_y = 319.98
##
## [bed_mesh COLD24.1]
## version = 1
## points =
## -0.005000, -0.050000, -0.072500, -0.062500, -0.050000, -0.022500, 0.002500
## -0.052500, -0.092500, -0.107500, -0.107500, -0.097500, -0.070000, -0.047500
## -0.110000, -0.150000, -0.162500, -0.162500, -0.152500, -0.120000, -0.095000
## -0.137500, -0.177500, -0.190000, -0.185000, -0.170000, -0.132500, -0.107500
## -0.095000, -0.127500, -0.152500, -0.152500, -0.140000, -0.110000, -0.077500
## -0.055000, -0.102500, -0.125000, -0.127500, -0.117500, -0.087500, -0.050000
## -0.002500, -0.042500, -0.070000, -0.070000, -0.065000, -0.047500, 0.000000
## tension = 0.2
## min_x = 30.0
## algo = bicubic
## y_count = 7
## mesh_y_pps = 2
## min_y = 30.0
## x_count = 7
## max_y = 319.98
## mesh_x_pps = 2
## max_x = 319.98
##
## [bed_mesh 20.1]
## version = 1
## points =
## -0.029615, -0.073077, -0.095577, -0.087115, -0.073077, -0.045577, -0.020577
## -0.060192, -0.100962, -0.114423, -0.114423, -0.104423, -0.075385, -0.052885
## -0.105385, -0.143846, -0.156346, -0.155577, -0.144808, -0.113077, -0.087308
## -0.126731, -0.165962, -0.177692, -0.171154, -0.155385, -0.117885, -0.092115
## -0.083462, -0.114423, -0.137115, -0.137885, -0.125385, -0.094615, -0.060577
## -0.048077, -0.094808, -0.115769, -0.117500, -0.108269, -0.075962, -0.039231
## -0.002500, -0.042500, -0.070000, -0.070769, -0.065769, -0.048269, 0.000000
## tension = 0.2
## mesh_x_pps = 2
## algo = bicubic
## min_x = 30.0
## min_y = 30.0
## y_count = 7
## mesh_y_pps = 2
## x_count = 7
## max_x = 319.98
## max_y = 319.98
##

etc...etc.

The error happened because I had a default bed mesh with 5x5 mesh points and 40mm for min value and 260 for max value. However the COLD and HOT meshes had 9x9 bedmesh, 20mm min value and 280mm max value.
Below you can see one of the wrong generated codes:

## [bed_mesh 39.1]
## version = 1
## points =
## 0.047518, 0.072811, 0.049122, 0.078049, 0.057159, 0.064183, 0.071506, 0.074604, 0.068293
## 0.036256, 0.082037, 0.056024, 0.074299, 0.069713, 0.048226, 0.041439, 0.049354, 0.049652
## 0.031372, 0.023159, 0.023396, 0.039470, 0.067567, 0.022921, 0.027982, 0.040659, 0.018098
## -0.020354, 0.001488, -0.002854, 0.007024, 0.002561, -0.021250, -0.009939, -0.013390, -0.028573
## -0.045774, -0.016250, -0.011488, 0.012561, 0.000000, -0.025000, -0.004762, -0.016848, -0.026073
## -0.026012, -0.009939, -0.011726, -0.002854, 0.014878, -0.002677, -0.011488, -0.030713, -0.019287
## 0.005720, 0.022982, 0.034829, 0.027506, 0.036134, 0.028634, 0.032445, 0.012146, 0.004171
## 0.000604, 0.048640, 0.025189, 0.044415, 0.059177, 0.053402, 0.049652, 0.050488, 0.031378
## 0.034067, 0.058470, 0.046506, 0.068232, 0.069720, 0.051683, 0.071567, 0.061030, 0.043945
## tension = 0.2
## min_x = 40.0
## algo = bicubic
## y_count = 5
## mesh_y_pps = 2
## min_y = 40.0
## x_count = 5
## max_y = 260.0
## mesh_x_pps = 2
## max_x = 260.0

And the expected code would be:

## [bed_mesh 39.1]
## version = 1
## points =
## 0.047518, 0.072811, 0.049122, 0.078049, 0.057159, 0.064183, 0.071506, 0.074604, 0.068293
## 0.036256, 0.082037, 0.056024, 0.074299, 0.069713, 0.048226, 0.041439, 0.049354, 0.049652
## 0.031372, 0.023159, 0.023396, 0.039470, 0.067567, 0.022921, 0.027982, 0.040659, 0.018098
## -0.020354, 0.001488, -0.002854, 0.007024, 0.002561, -0.021250, -0.009939, -0.013390, -0.028573
## -0.045774, -0.016250, -0.011488, 0.012561, 0.000000, -0.025000, -0.004762, -0.016848, -0.026073
## -0.026012, -0.009939, -0.011726, -0.002854, 0.014878, -0.002677, -0.011488, -0.030713, -0.019287
## 0.005720, 0.022982, 0.034829, 0.027506, 0.036134, 0.028634, 0.032445, 0.012146, 0.004171
## 0.000604, 0.048640, 0.025189, 0.044415, 0.059177, 0.053402, 0.049652, 0.050488, 0.031378
## 0.034067, 0.058470, 0.046506, 0.068232, 0.069720, 0.051683, 0.071567, 0.061030, 0.043945
## tension = 0.2
## mesh_x_pps = 2
## algo = bicubic
## min_x = 20.0
## min_y = 20.0
## y_count = 9
## mesh_y_pps = 2
## x_count = 9
## max_x = 280.0
## max_y = 280.0

I'm out of free time to tackle this right now, but you may want to warn the user that all the meshes kept on the printer,cfg must have the same configuration (grid size, algorithm, min and max values), in order for the python script to work.

Thank you for the effort that you have put on this!

I do not even finish the first layer of a print.
I think as soon as it's trying to update the bed mesh it crash.
At first I did with .1 degrees increment. It was crashing very early in the print.
then I did with .2 increment. It was crashing later in the first layer..

Forget to specify. The macro does set the bed mesh when it's not printing without any issue.. It's while it's printing the issue occurs.

Kliper version 10.0.122

I think I need to specify, that as Soon as I disable the VGB macro.. I can print again..
I think the idea of this is great.. Like really a life saver great style.. But sadly It make the printer MCU crash :(

i can't get the script running, i got the same error every time

pi@mainsailos:~/printer_data/config $ python3 generate_VGB_meshes.py printer.cfg 0.2 7
Traceback (most recent call last):
  File "/home/pi/printer_data/config/generate_VGB_meshes.py", line 56, in <module>
    postamble.pop()
IndexError: pop from empty list

Thank you!!!

Its a great solution. Plus no more meshing before prints and its lighter than titanium!

Very thankful for this...

I have used it for a long time, I don't know why, it doesn't work anymore. klipper unable to reconnect after reboot. does anyone have any idea what the problem is? i think there is the deprecation of parameter sets from klipper. therefore it must be rechecked.

Does the heat bed and frame warp in the same way during every heat cycle or does it vary each time the machine is heated?