Stepper Disabling after print completes and 2 minutes after a home.

[I-wish-2]

Greetings All,
I think this is the correct area to ask for some help. I have several modified E3 Pros that are using firmware Ver 2.1.3 20221222, 427-BLTUBL-MPC. Several of these printers have had the timing belt modification by Kevin AkaSam ( YouTube). These printers require the Z axis to remain powered up when at idle to keep the X axis Gantry from drifting down causing a nozzle impact with the bed.
I understand from Miguel that the steppers and temperature being disabled at the end of the print or after 2 minutes of inactivity after a "home all" function, is safety related. If you all could help me with the edit Miguel suggested I would be so grateful and maybe much smarter.
It was suggested to edit the source code file dwin.cpp, ( Marlin/src/lcd/e3v2/proui/dwin.cpp ), and then recompile and flash the mother board. The lines of code suggested to be edited are as follows, although I'm not sure as to which ones.

1621 // Ended print job
1622 void DWIN_Print_Finished() {
1623 TERN_(DEBUG_DWIN, SERIAL_ECHOLNPGM("DWIN_Print_Finished"));
1624 TERN_(POWER_LOSS_RECOVERY, if (card.isPrinting()) recovery.cancel());
1625 HMI_flag.pause_flag = false;
1626 wait_for_heatup = false;
1627 planner.finish_and_disable();
1628 thermalManager.cooldown();
1629 if (!HMI_flag.config_flag) Goto_PrintDone(); else HMI_flag.config_flag = false;
1630 }

I reviewed a similar request in the Discussions Area for a work around regarding the hotend and bed temperature being set to 0 at the end of printing and the suggestion was to comment out line 1628 to remove that function, I do not know the results.

I guessed that line 1627, with disable in it, was the line I need to, //, comment out. I was able to edit the line using Visual Studio Code and then recompiling and flashing the mother board which I did. After flashing the firmware rebooted and came up ok but I was not able to home or mover any of the Axis's and then the home timed out and a power down was required.

I would like my End G-Code to handle the end of print requirements which is below.

; Ender 3 & 5 Custom END G-code 12/12/2022
; This code is based on the E3 V2 Klipper setup buts work on all E3 & E5 Printers

G91 ;Relative positioning
G1 E-2 F2700 ;Retract 2 mm
G1 E-2 Z0.2 F2400 ;Retract and raise Z
G1 X5 Y5 F3000 ;Wipe out
G1 Z10 ;Raise Z more
G90 ;Absolute positioning
G1 X10 Y225 Z75 ;Park X and Z axis; Move Y to Present Print
M106 S0 ;Turn-off fan
M104 S0 ;Turn-off hotend
M140 S0 ;Turn-off bed
M84 X Y E ;Disable all steppers but Z to lock the gantry at 75mm

; End of custom END G-Code

I'm now at a loss as to how to proceed and any suggestions / help is more that welcome.
Doug

[mriscoc]

Use

planner.synchronize();

Instead of

planner.finish_and_disable();

This will fix the motor disabling after printing but not after idle.

For fix the stepper deactivation when idle change the Configuration_adv.h file:

#define DEFAULT_STEPPER_DEACTIVE_TIME 120
#define DISABLE_INACTIVE_X true
#define DISABLE_INACTIVE_Y true
#define DISABLE_INACTIVE_Z true  // Set 'false' if the nozzle could fall onto your printed part!

[mriscoc]

It could be something to be configurable, for a future version.

[I-wish-2]

Greetings, thank you for direction on the compile. I need to know how to select 4.2.7 for the compile as I'm not seeing an option for a selection of which mother board to compile for.
Doug

[mriscoc]

I think that you need this:

From: https://github.com/mriscoc/Special_Configurations

[I-wish-2]

I did miss the Professional Firmware Configurator. It looks like a great tool. Please understand that as a novice in this effort there are areas that I would not know were there or even how to use them. So far I'm progressing if slowly but am having some success. Thank you for your help.
Doug

[mriscoc]

Ok maybe we can set your configuration as a sponsored one, here it is and again, thanks for your support:

===============
Hi Doug, I'm attached a firmware with your requirements, the NCDF are for NOT_COOL_OR_DISABLE_AT_FINISH, I create that configuration for you, also the DEFAULT_STEPPER_DEACTIVE_TIME was increased to 300 s and DISABLE_INACTIVE_Z was set to false.

(file removed)

Regards.

===============
Unzip the firmware file and copy to your memory card

[mriscoc]

Please set your end g-code script to cooldown or disable the motors if you need.

[I-wish-2]

My Current End G-Code
; Ender 3 & 5 Custom END G-code 12/12/2022
; This code is based on the E3 V2 Klipper setup buts work on all E3 & E5 Printers

G91 ;Relative positioning
G1 E-2 F2700 ;Retract 2 mm
G1 E-2 Z0.2 F2400 ;Retract and raise Z
G1 X5 Y5 F3000 ;Wipe out
G1 Z10 ;Raise Z more
G90 ;Absolute positioning

G1 X10 Y225 Z75 ;Park X and Z axis; Move Y to Present Print
M106 S0 ;Turn-off fan
M104 S0 ;Turn-off hotend
M140 S0 ;Turn-off bed

M84 X Y E ;Disable all steppers but Z to lock the gantry at 75mm

; End of custom END GCode

The Flash is complete and I'm coping in the configuration setting. Temp tuning next and then some prints. More info in a few.
Miguel Thank You, My Boat Anchor is soon to be a printer.
Doug

[I-wish-2]

Hi Miguel,
The current results of the bin you sent.
All configuration data for prepare, control and advanced was entered ok. The hot end and bed temp auto tune worked great. The tramming and bed mesh at 80 deg ( PET-G filament) was near flat. I continue to run and adjust the wheels until the tramming is 0.01 on each corner and the Mesh will follow close to those values. The Z-Offset was the same a before.
I printed a calibration square 40 x 40 x 2 layers for the z-offset which used my End G_Code to test the Z axis. This failed as the X Y Z & E axis all disabled and the gantry dropped.
After a home all the z axis was raised to 340 mm and after 900 seconds / 15 minutes of inactive all the stepper were still enabled.
Progress is being made Ah, so close. I poured you a nice craft brew toasted you and called it an evening as tomorrow is another day for this adventure. Again thank you my Friend.
My Best Regards
Doug

[mriscoc]

I forgot to say that in the Creality 422 and 427 boards, the stepper drivers for all axes share the same enable pin. I don't remember how M84 manages that, I will test that tomorrow but for now try removing the M84.

[project-nope]

I forgot to say that in the Creality 422 and 427 boards, the stepper drivers for all axes share the same enable pin. I don't remember how M84 manages that, I will test that tomorrow but for now try removing the M84.

This is the information I have been looking for. I was having the most difficult problems with M84/M18 not working correctly, and thought there was a bug in your firmware. Thank you for explaining this!

I am changing all occurances of:
M84 X Y E
in my gcode to
M84 S3600

I do not know why, but after squaring my frame with engineering indicators and oiling my Z-axis, it is falling like a stone as soon as steppers disable.

The eccentric nuts are very tight, I can only barely turn them against the rail with 2 fingers. All bolts on the printer are torqued with 2 newton-meter torque wrench - all bolts are uniformly tight. All extrusions are straight.

I think my Z-axis screw is too perfectly straight and well oiled, so it falls too easily. If you have another idea I'd love to hear it!

[I-wish-2]

Here is the custom E3 Pro effort that needs the Z help.
Doug

[mriscoc]

Here is the custom E3 Pro effort that needs the Z help. Doug

Great work!

[I-wish-2]

I am giving that a try now, thank you again.

[mriscoc]

Why don't you turn off the hot-end and bed just after raise Z?

[I-wish-2]

Great thought let me give it a try, Thank you.
D

[I-wish-2]

Sometimes I over think it. This is much better Thank You!

; Ender 3 Pro Z Axis Timing Belt Drive
; Custom END G-code 01/07/2023

G91 ;Relative positioning
G1 E-3 F2700 ;Retract 3 mm
G1 Z0.4 E-2 F2400 ;Raise Z and Retract again
G1 X5 Y5 F600 ;Wipe out
G1 Z10 ;Raise Z again
M104 S0 ;Turn-off hotend
M140 S0 ;Turn-off bed
M107 ;Turn-off fan
G90 ;Absolute positioning
G1 X10 Y195 Z75 F2400 ;Park X and Z axis; Move Y to Present Print.

; End of custom END G-Code

Doug

[I-wish-2]

Hi Miguel,
With more that a few prints run now the printer is preforming better than ever as I have not seen better print quality up to this point.
Is it possible to receive a copy of the source code that you used to compile the version of "Experimental-Ender3v2-427-BLTUBL-MPC-NCDF-20230105.bin " for me. I would like to keep a copy in my Firmware Backup folder if it is needed. Once again thank you for all your help.
Doug

[mriscoc]

Of course, and better if you can always have the later firmware version just by using the Configurator.pyw, copy the text bellow and save in the _features folder with the filename: NCDF.json, the Configurator will be see it as a new feature and you will can select it.

{
"Configuration.h" : [
  {
    "op": "InsertAfter",
    "searchfor": "#define DWIN_LCD_PROUI",
    "newline": "#define NOT_COOL_OR_DISABLE_AT_FINISH\n"
  }
],
"Configuration_adv.h" : [
  {
    "op": "CustomVal",
    "searchfor": "DEFAULT_STEPPER_DEACTIVE_TIME",
    "value": "300"
  },
  {
    "op": "Disable",
    "searchfor": "SD_FINISHED_STEPPERRELEASE"
  }
],
"Version.h" : [
]   
}

[I-wish-2]

Thank you Miguel, I have tried to figure out how to use the Configurator.pyw file and Pylon 3.1 that I have installed with no luck so far. I have started a discussion on your site and enlisted any and all help. I did review any thread that had Configurator in it but there was not much help there. I’m looking forward to any answers as there are others who have asked for similar information. Best Regards Doug p.s. my prints are near perfect as they look almost like injection molded items. : )