How to send GCode command to X1C?

Bambu Lab X1 Series Bambu Lab X1C
1

Hi there,

I have noticed on a couple of occasions now that if I stop a print basically during its calibrate phase for example the toolhead Bambu LED is left on and I can’t seem to turn it off.

Makes perfect sense I suppose if the print sent to the X1C has passed the line that says turn logo LED on and I stopped it before it reached the end of the script that says turn logo LED off!

But how would I send a single GCode command to the X1C to turn it off?

And to expand this is there a list of GCode commands that the X1C will interpret?

I am using Bambu Handy and Bambu Studio to control my printer if that makes any difference but do have HomeAssistant running on a Pi4 and have been thinking about adding the Bambu Add-In at some point bearing in mind that this option might be neutered as & when the latest firmware from Bambu is ever installed.

Also wondering if/when this firmware ever becomes a reality what effect it might have on the BL LED mod that uses MMQTT to communicate but that maybe should be subject to a different thread.

Thanks & kind regards,
-=Glyn=-

2

You cannot send individual gcode to a standard X1C. If you are running X1Plus there is an on-screen console which you can send gcode through.

Here is the most comprehensive list that I know of for bambu supported gcode.

3

The commands to control the toolhead LED are:

M960 S5 P0; Bambu Lab toolhead logo light off
M960 S5 P1; Bambu Lab toolhead logo light on

I think you should be able to put them in separate .gcode files and store them on the SDcard, and then “print” the file from the printer display. Unfortunately, I do not know what else needs to be in the .gcode file to make that work.

They do work from the X1Plus on-screen console, but if you have X1Plus you don’t need the gcode - you have a switch.

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1 Like
4

Thanks for the replies guys.

A great solution would be for BL to build-in some sort of button specifically for sending a GCode command line option with some simple commands where you could select some basic commands from a list and just hit Send/Print/Submit etc. to have the printer action the command.

Maybe even have a configurable option where you could add your own command and have Bambu Studio take care of the rest of the properly-formatted code similar to some programs where you edit/type in your own hyperlink and just click a Go button or something.

I can but live in hope but I won’t be holding my breath… :stuck_out_tongue_winking_eye:

-=Glyn=-

5

There is a special command for MQTT:

{
    "print": {
        "sequence_id": "0",
        "command": "gcode_line",
        "param": "M960 S5 P0" // Gcode to execute, can use \n for multiple lines
    }
}

Or

{
    "print": {
        "sequence_id": "0",
        "command": "gcode_file",
        "param": "filename.gcode" // Filename (on the printer's filesystem) to print
    }
}

I think we can already make a list of problems that we should fix ourselves :smiley:

6

Something like the on-screen console that X1Plus already offers?

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Activate the built-in VNC server, run a VNC client, and you can issue gcode commands from your desk.
Or phone…

7

Score another point for X1Plus along with its RJ45 socket as I would much prefer to hardwire my devices if at all possible rather than depend upon wi-fi.

I suppose if I could determine what other commands would enable the GCode commands of;

M960 S5 P0; Bambu Lab toolhead logo light off
M960 S5 P1; Bambu Lab toolhead logo light on

to work then I could generate various files on the SD Card and just select which one I want to ‘print’ from it to execute said command.

All I need ot know is what the rest of the script should look like! :stuck_out_tongue_winking_eye:

Thanks & kind regards,
-=Glyn=-