Correction of heightmap is not really working

fcwilt

@icy_snake said in Correction of heightmap is not really working:

@fcwilt thx, i did not write that, its the people from modix.
they wrote that file.

the printer has following setup

4 motors for the bed
2 motors for x axis
1 motor for y axis
2 motors for extruder

Thanks.

The folks at modix don't seem to know what they are doing. As a result you are having a tough time getting your printer working correctly.

In your config.g file you have these two commands:

M574 X1 S1 P"xstop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop
M574 U1 S1 P"e0stop" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin xstop

Replace them with this:

M574 X1 S1 P"xstop + e0stop"

Then remove all references to U in the config.g and home all files and the M584, M400 and M375 commands in the home all file.

Reboot and issue G28 X to verify that X homes correctly.

You have two X steppers. The firmware supports multiple endstop sensors for an axis that has multiple steppers. Issuing a G1 H1 command to home such an axis causes each stepper to run until the endstop sensor associated with that stepper is triggered. The association is created in the M574 command for that axis where the two endstop sensors appear as I have shown above.

One we correct his problem we can work on:

getting your Z probe configured correctly
setting the Z=0 datum as needed
creating mesh.g and populating it with the needed code
correcting bed.g to only contain the needed code

Frederick

ICY_SNAKE

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ICY_SNAKE

This post is deleted!

ICY_SNAKE

@icy_snake missed one M584
so it´s ok now no error message anymore

ICY_SNAKE

@icy_snake Thx Frederick

i´m from germany Augsburg. You are from the USA, located Verginia? For time offset.
east cost 6 hours i´m ahead.

ICY_SNAKE

Hello Frederick

I´m ready what i should do next.

One we correct his problem we can work on:

getting your Z probe configured correctly
setting the Z=0 datum as needed
creating mesh.g and populating it with the needed code
correcting bed.g to only contain the needed code

fcwilt

@icy_snake

Hi,

I'm just getting up. Got to get dressed and then get breakfast.

Then I will be back.

Frederick

ICY_SNAKE

@fcwilt Sorry , thats what i was thinking. Have a great breakfast.

fcwilt

@icy_snake

No problem. Glad to be of help when I can.

Frederick

ICY_SNAKE

@fcwilt yes thanks for helping,

what should I do next

fcwilt

@icy_snake said in Correction of heightmap is not really working:

@fcwilt yes thanks for helping,

what should I do next

I organize by code somewhat differently than is perhaps the most common. Are you aware of the M98 command which allows running one .g file from another .g file?

For example I mentioned that when you make changes to the G31 command in the config.g file you have to reboot or reset the printer to get the config.g file processed to apply the changes.

I prefer to put the M950, M558 and G31 commands need for configuring the Z probe into a separate file, which I name config_probe.g, but the name can be anything you like. Then any code, like the code in bed.g or mesh.g, that is going to use the Z probe, includes the command M98 P"config_probe.g" which results in the Z probe configuration being updated to the current values in config_probe.g.

Does that make sense to you? Do you understand what I am doing and why? I understand you are new to all this and I don't want to confuse you but I do want to get you started on the right track and help you understand the "how and why" of things.

Frederick

ICY_SNAKE

@fcwilt yes i looked at m98.

makes sense to me.

So have different files which will be called.

Fine.

so lets start with config_probe.g

I have all 3 files config_probe.g, bed.g, mesh.g open now for input

I´m using version 3.3 on the software

fcwilt

@icy_snake

Hi,

Here is an example of a config_probe.g" file adjusted to use the values from your files. The G31 Z parameter is the one that needs to be "tweaked" to reflect your actual hardware and get accurate probe readings.

M950 S0 C"duex.pwm5"
M558 P9 C"zprobe.in" H5 F120 T6000 A5 R0.7
G31 P500 X-18 Y24 Z2.917

Here is an example of a bed.g file adjusted to use the values from your files. It uses a while loop to execute a leveling pass up to five times (or any other number you want) stopping when any pass reports the bed is level "enough" based on checking the object model value move.calibration.initial.deviation. This file assumes the printer is currently homed.

M98 P"config_probe.g"        ; insure probe is using most recent configuration values

G29 S2                       ; cancel mesh bed compensation
M290 R0 S0                   ; cancel baby stepping

G90                          ; absolute moves
G1 Z5 F99999                 ; insure Z starting position is high enough to avoid probing errors

; M671: Define positions pf manual bed levelling screws or Z leadscrews

; Xnn:nn:nn... list of between 2 and 4 X coordinates of the leadscrews that drive the Z axis or the bed levelling screws
; Ynn:nn:nn... list of between 2 and 4 Y coordinates of the leadscrews that drive the Z axis or the bed levelling screws
; Snn          maximum correction allowed for each leadscrew in mm (optional, default 1.0)
; Pnnn         pitch of the bed levelling screws (not used when bed levelling using independently-driven leadscrews). Defaults to 0.5mm which is correct for M3 bed levelling screws
; Fnn          fudge factor, default 1.0

M671 X-189:-189:645:645 Y645:-64:-64:645 S10 ; Anticlockwise

; --- level bed ---

while true
  ; run leveling pass

  G30 P0 X2   Y20  Z-99999    ; Probe near a leadscrew
  G30 P1 X600 Y20  Z-99999    ; Probe near a leadscrew
  G30 P2 X600 Y600 Z-99999    ; Probe near a leadscrew
  G30 P3 X2   Y600 Z-99999 S4 ; Probe near a leadscrew

  if move.calibration.initial.deviation < 0.02
    break

  ; check pass limit - abort if pass limit reached

  if iterations = 5
    M291 P"Bed Leveling Aborted" R"Pass Limit Reached"
    abort "Bed Leveling Aborted - Pass Limit Reached"

; --- finish up ---

; --- set Z=0 datum which can be affected by leveling ---

G1 Xaaa Ybbb ; move probe to center of bed - set values aaa and bbb as appropriate
G30          ; do single probe which sets Z to trigger height of Z probe

ICY_SNAKE

@fcwilt
ok
so far.

G1 x300 y300

fcwilt

@icy_snake said in Correction of heightmap is not really working:

@fcwilt
ok
so far.

G1 x300 y300

Good.

I suppose at this point we should re-visit all of your homing files. So please post, using the </> tag once per file, all four of your homing files.

Frederick

ICY_SNAKE

@fcwilt
</ homeall.g>
M280 P0 S60 I1
G91 ; relative positioning
G1 H2 Z5 F200 ; lift Z relative to current position
G1 H1 X-605 Y605 F3000 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y-5 F600 ; go back a few mm
G1 H1 X-605 Y605 F600 ; move slowly to X and Y axis endstops once more (second pass)
G90 ; absolute positioning
G30 ; home Z by probing the bed
</>

< /homex.g>

; homex.g
; called to home the X axis - DUAL ENDSTOPS
G91 ; relative positioning
M913 X50
G1 H1 X-605 F3000 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F600 ; go back a few mm
G1 H1 X-605 F600 ; move slowly to X axis endstop once more (second pass)
M913 X100
G1 H2 Z-5 F200 ; lower Z again
G90 ; absolute positioning
</>

< homey.g
; homey.g
; called to home the Y axis
G91 ; relative positioning
G1 H2 Z5 F200 ; lift Z relative to current position
G1 H1 Y605 F3000 ; move quickly to Y axis endstop and stop there (first pass)
G1 H2 Y-5 F600 ; go back a few mm
G1 H1 Y605 F600 ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F3000 ; lower Z again
G90 ; absolute positioning

< homez.g
; homez.g
; called to home the Z axis
M280 P0 S60
G91 ; relative positioning
G1 H2 Z5 F200 ; lift Z relative to current position
G90 ; absolute positioning
G30 ; home Z by probing the bed

< rehome.g
M280 P0 S60
G91 ; relative positioning
G1 H2 Z5 F200 ; lift Z relative to current position
G1 H1 X-605 Y605 F3000 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 Y-5 F600 ; go back a few mm
G1 H1 X-605 Y605 F600 ; move slowly to X and Y axis endstops once more (second pass)
G90

thats ok so?

fcwilt

@icy_snake

Here is an example of a mesh.g file adjusted for your values.

M98 P"config_probe.g"        ; insure probe is using most recent configuration values

G29 S2                       ; cancel mesh bed compensation
M290 R0 S0                   ; cancel baby stepping
 
G90                          ; absolute moves

; --- set Z=0 datum which is needed for creating a heightmap

G1 Z5 F99999                 ; insure Z starting position is high enough to avoid probing errors

G1 Xaaa Ybbb                 ; move probe to center of bed - set values aaa and bbb as appropriate
G30                          ; do single probe which sets Z to trigger height of Z probe


M557 X20:600 Y20:620 S58     ; define mesh grid 420 points S58

G29 S0                       ; probe bed and create height map

ICY_SNAKE

@fcwilt ok understand

fcwilt

@icy_snake

When homing the Z axis with a G30 you need to precede it with a G1 command to move to the center of the bed.

I don't know what the M280 P0 S60 is for - I don't have it in my code.

You also have some M913 commands - I have not found it necessary to use those.

You have a file rehome.g - what is that for?

Frederick

ICY_SNAKE

@fcwilt
I have no idea for what they are using M280, because i have no servo to set any position.

Not sure why they change the current for the stepping motors.

I believe they copied many codes together to get it running