Are special marlin 1..1.9 mesh bed leveling g codes required to enable leveling?

The printer is an Anycubic Mega s with a Trigorilla 1.1v control board. I have successfully uploaded a version of the Marlin 1.1.9 firmware with mesh bed levelng from here: [www.thingiverse.com]. I have inserted a blank SD card in the printer and successfully completed mesh bed leveling, the store of the results into EEPROM appear to be successful.
I am unclear regarding the scope of control managing mesh bed leveling. Is it automatic, i.e. always on or are special G coded required.
If it is not automatic what is the scope of enablling it? Are special G codes required per power on / reset? Or are special G codes required per print to enable it?
If it is on how can it be disabled?

In Marlin 1.1.9 BF Enable

#define RESTORE_LEVELING_AFTER_G28

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Computer Programmer / Electronics Technician

Thank you. I assume tnat is a build options.

The instructions refer to:

"Look for the Z-homing (either just G28 or G28 Z0) command and insert these two right underneath it:

M501
M420 S1 "

I am using cura on stl files, there is no G Code file. Do I need to save the slicing output from cura and then edit the G Code file before printing?

Is there a way to add the above 'initialization' sequence to cura?

No M501 the rest is OK.


This is my Startup G-Code I use it on many Slicers, I configured for My 3D Printer It may Not correctly work on yours.
I wanted to give you a sample this was the one I knew worked for me.

;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line
;M109 S{print_temperature} ;Uncomment to add your own temperature line
G21        ;metric values
G90        ;absolute positioning
M82        ;set extruder to absolute mode
M107       ;start with the fan off
G28 X0 Y0  ;move X/Y to min endstops
G28 Z0     ;move Z to min endstops
G1 Z15.0 F{travel_speed} ;move the platform down 15mm
;Put printing message on LCD screen
M117 My Print...
G28 X0 Y0
G1 E4.0 ;prime extruder
G92 E0 ;reset extruder length
M420 S1   ; Bed Leveling On
M106 P1 S128 ; P1 = 2nd Fan
M220 S46.000000 ;Start Print Speed

Edited 1 time(s). Last edit at 12/05/2020 07:23AM by Roberts_Clif.

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Computer Programmer / Electronics Technician

Thank you. That is helpful. I am using cura, I have not been able to find an option to include a startup g code string in cura. Does it have such an option? If so do you happen to know where in the configuration menu it is?

All version of Cura Have this Option. Will assume a newer version.

Start Cura.
Click on Settings > Printers > Manage Printers
Click on Machine Settings
On the Printer Tab At the bottom of the page are Start G-Code an End G-Code

There is also Extruder Tab At the bottom of the page are Extruder Start G-Code an Extruder End G-Code.
Personally have never used Extruder Tab G-Code if anyone has post information on how to use...

Edited 3 time(s). Last edit at 12/05/2020 04:37PM by Roberts_Clif.

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Computer Programmer / Electronics Technician

Thank you. I had seen that screen but had not made the connection. I appreciate the help. Dan

You are most welcome.
Please continue to visit the forum there is much to learn here.

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Computer Programmer / Electronics Technician