Setting LB $30 Device settings

LightBurn Software Questions
1

I’ve looked around and watched the videos that talk about the $30 g-code command about Spindle Speed…

It refers to setting the Machine Speed setting to that in LightBurn
so they match and when you set your Power to 50% in LB it matches that in the Machine Settings…

It was a good video but the RUIDA does not do the Console G-code…
So it must have been on a Laser that had a different controller…

Ok referring this to as laser power instead of cnc drill speed, is what they are talking about,

The video I watched actually shows the S30 in the Machine settings and the Device settings
I have a Monport 130w Ruida controller and when I look at the Machine settings, I assume it is under the U-Axis there is nothing about Spindle Speed or S30 but did find a Power setting, so I have to assume this is it.
Now in LB the S-Value MAX setting is not found…

anyone run into this…

2

That option is available to GRBL based devices.

3

Are you saying the Spindle speed is available to ONLY grbl devices ?
I know the S30 code is not on the Ruida as I stated…

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4

You don’t have to care about all this. As parsec mentioned, this is for grbl-based devices. Those were developed initially to run CNCs and were adapted to lasers. And they base on a different hardware design. Ruida controllers are laser controllers that do not have / need that option.

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5

Yea I understand that…

here is the video that explains a possible system power discrepancy, and I was just curious to understand the spindle info

ck out timestamp 1:40

6

This still doesn’t apply to your laser. Anyhow, I described the background of this setting here (s-value max section):

7

ok I need to think on this

8

Hello sir, me too encounter this very problem. Can you tell me what are the solutions? Thank you

9

Nash…

Not sure of the solution, still investigating if this applies to CO2 lasers…

10

ok , Thank you. Let me know if you got anything on that.

11

It doesn’t, at least for CO₂ lasers with Ruida controllers, simply because they do not use G-Code and, thus, do not have an S command to adjust the spindle speed / laser power and lack the entire list of $ configuration parameters.

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12

I figured that since the Ruida did not support gcode…
but thought there might be a Spindle config item…
Rabbit holes… :slight_smile:

13

Is there a particular problem you’re solving for? If so, please share and someone may be able to direct you to a more specific rabbit hole.

14

Not a specific issue, new to lasers and was following up on a video discussing the mismatch on the $30 spindle values that could cause power discrepancies.

Was not sure if it applied to CO2 lasers… curiosity…

15

The relationship of power to spindle speed in GRBL is predominately a legacy vestige to GRBL’s origin as a CNC controller.

Ruida controllers are purpose built controllers for laser function. There are related concepts that can control min/max power or narrow the accessible power range on these commodity CO2 lasers and are fairly well discussed in the forum if you are curious.