Make bed leveling temperature configurable

[Jeisecke]

Currently, bed leveling routines always run at 60°C, which is suboptimal for various bed surfaces and filament types. The temperature is currently hardcoded in the Elegoo firmware and cannot be set by users through configuration or G-code.

Proposal:

• Make the bed leveling temperature configurable in the OpenCentauri firmware so that it can be set via:
  • G-code parameter (e. g. BED_LEVEL_TEMP S{temperature})
  • Slicer profile (uses already-heated bed temperature)
  • Configuration file (configurable default if no parameter is given)
• This would allow users to perform heated bed leveling at an optimal temperature for their material and bed surface, which may be lower or higher than 60°C.

Background:

• On many printers, heated bed leveling is recommended, but the optimal temperature depends on the material, adhesive, and process.
• Currently, the process is not flexible and can lead to unintentional warping or risk of reduced adhesive performance.

Request:
Please implement the ability to set the bed leveling temperature, either via a config file or a G-code argument. Ideally, default to a sensible value (e.g. 60°C), but allow override/parameterization.

References:

• Issues and discussion threads among users requesting this feature
• Need for flexibility for different printers, beds, and filaments

---

Jeisecke, 2026-01-11

[kizzelwhix]

I've found that M8210 S(n) will sometimes reset the temperature for next initialization - I say sometimes, because I got it to work about three times before it stopped working. Completely.

However, the code exists in the source released by Elegoo. See my reddit comment (with code reference) on the matter, here: https://www.reddit.com/r/OpenCentauri/comments/1px2kfc/comment/nyik5tf/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

[robertsamples]

Unfortunately This is a bit of a heavy lift. I have a modified app image I was was using to level at 99, but it required reflashing firmware or killing the app and swapping it before rebutting every time you wished to change the leveling temperature. Changes to the binaries were required. So unfortunately it is not so easy to get a dynamic change working given the limitations with the transpiled firmware, though I am not an expert of the firmware by any means.

[desmeulesmen69-netizen]

;;===== date: 20240520 =====================
;printer_model:[printer_model]
;initial_filament:{filament_type[initial_extruder]}
;curr_bed_type:{curr_bed_type}
M400 ; wait for buffer to clear
M220 S100 ;Set the feed speed to 100%
M221 S100 ;Set the flow rate to 100%
M140 S[bed_temperature_initial_layer_single]
M106 S200 ;Turn on Model Fan
M109 S180
G90
G28 ;home
M400
M109 S180
M729 ;Clean Nozzle
M109 S140 ; Probing Temp Nozzle
M106 S0 ; Cooling nozzle off
M729 ;Clean Nozzle
M190 S[bed_temperature_initial_layer_single]
M8210 S[bed_temperature_initial_layer_single] ; Set bed_mesh_temp
BED_MESH_CLEAR
BED_MESH_CALIBRATE ; Probe bed at printing temp
M8803 ;export configs to USB

Is my start G-code for leveling the bed at the temp your gonna print at . Nozzle to 140 to not burn the bed with 2x cleaning nozzle before bed prob and its save the bed calibration to the usb stick to look at your bed mesh : https://suchmememanyskill.github.io/bens-claude-cc-mesh-visualiser/#

[robertsamples]

;;===== date: 20240520 ===================== ;printer_model:[printer_model] ;initial_filament:{filament_type[initial_extruder]} ;curr_bed_type:{curr_bed_type} M400 ; wait for buffer to clear M220 S100 ;Set the feed speed to 100% M221 S100 ;Set the flow rate to 100% M140 S[bed_temperature_initial_layer_single] M106 S200 ;Turn on Model Fan M109 S180 G90 G28 ;home M400 M109 S180 M729 ;Clean Nozzle M109 S140 ; Probing Temp Nozzle M106 S0 ; Cooling nozzle off M729 ;Clean Nozzle M190 S[bed_temperature_initial_layer_single] M8210 S[bed_temperature_initial_layer_single] ; Set bed_mesh_temp BED_MESH_CLEAR BED_MESH_CALIBRATE ; Probe bed at printing temp M8803 ;export configs to USB

Is my start G-code for leveling the bed at the temp your gonna print at . Nozzle to 140 to not burn the bed with 2x cleaning nozzle before bed prob and its save the bed calibration to the usb stick to look at your bed mesh : https://suchmememanyskill.github.io/bens-claude-cc-mesh-visualiser/#

Others can correct me but I don't believe the mesh will be permanently applied for subsequent prints using this method- it would need to be done at the start of every print. I think Jeisecke was more interested in making the persistent level (akin to what is possible in the calibration UI) configurable.

[desmeulesmen69-netizen]

Good question , i don't really know if the bed mesh is save directly in the printer with that g-start . But if you need to level it at a specific temp for a specific filament ... its work without needing to manualy set the prob bed temp . i just have 2x elegoo g-code profil , one for leveling at specific temp and one without the leveling g-code .

[chrissurfer]

Add this after "M190 S[bed_temperature_initial_layer_single]":

M8210 S[bed_temperature_initial_layer_single] ;Set bed_mesh_temp

BED_MESH_CALIBRATE

Reddit https://www.reddit.com/r/ElegooCentauriCarbon/s/pzC0PB83VF

Also, it seems to be if you turn off your printer and then turn it back on, both your bed mesh's are completely zeroed out, so do not forget to re-level both a and b plates you where used before printing if you turned off your printer.

For setting initial temperature say 40 Celsius for the entire leveling process, then starts the print but it does still have the novel at 170 or zero if you don't touch the nozzle temp. Which will leave a little dots all over the bed from oozing.

My old method to do a calibration level for the cold plate ik I'm not seeing the temperature but just a calibration bar. It's at 60 bed and 140 nozzle.

Then before I print opt into leveling before printing it will try to set the bed temperature at 60, but if you press set temperature on the screen, you could set it back to 40. It will continue the process and it tries twice to set it to 60 but if you set it back to 40. It'll continue leveling at 40c

Example wanna print on cold plate loading the proper plate selected in orca , then opt into leveling before print.

It sets that the temperature of the bed at 60 and you can't really touch the screen while it's homing for a second but after that you set it to say 38 because it will do that exact same process again trying to set it to 60 so set it to 40 but the second time and it will then reach 40 and start leveling at 40 which gave better perfect first layers with .000 zoffset.

But in conclusion, the mentioned fix at the very beginning, makes it level at the first layer bed temperature pretty well but leaves the little dots still working on fix- I read in the comments and myself obviously I want it to be around 140 nozzle temperature instead of 170.

I messaged elegoo about the issue with turning off the printer zeros the bed mesh's and ended up scratching my OEM plate and I think it's what caused the same issue with one of my plates in my build plate pack I had turned off and on the printer.