FluidNC and LB1.1 not connecting

So Tried the preferences option but still no good.

I’ve tested on 2 systems, Win10x64 and Win7x32 and both have the same issue. I’m using an ESP32 board with FluidNC Firmware 3.4.6 that is connected to a StepCraft CNC / laser.

Have got LB V1.0.6 installed and working with FluidNC all OK no Problem. I changed the install location folder and then installed LB V1.1.04 so I can run either but i think they share the same config.

In V1.0.6 when I connect to the controller and Have the “Show All” option selected, I get the Waiting for Connection then it lists of all the details of the controller and finishes with OK and is then able to be used.

In V1.1.* when I connect and have “Show All” selected it shows “Waiting For Connection” then the window just scrolls with G0, one on each line.

Well, Changing the install location is not recommended or supported, for a reason. There are things that look for utilities in specific locations and when you install in other places, those break.

So that out of the way, LightBurn treats fluidNC as a GRBL connection over USB.

to check I just pulled the latest beta on a brand new windows 11 PC I’ve been setting up and connected my FluidNC test machine. This is the first machine I have setup on this laptop so there is no prior drivers or anything installed.


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That means it has chosen a COM port and is attempting to talk to what’s on the other end, but whatever is there isn’t responding. If you click the drop-down list next to the ‘Devices’ button, do other ports appear? Can you select them in turn to see if something responds?

Understand the install location issue but thanks for the clarification.
I’ve noticed your using FluidNC 3.4.4 so I’ll try rolling back in case there is a problem there as I’ve only been on 3.4.5 or 3.4.6
Also see your using LB1.2 is that a beta available.

The beta is available in the beta test group. But for this there shouldn’t be anything different. Are you connecting over USB or wifi? I can look at updating this board to 3.4.6. It looks like there has been a lot of updates in communication in the last couple weeks.

I rolled back to 3.4.4 and had the same problem. I’ll try LB1. 2 next.

How are you connecting? Can we see your device settings in Lightburn? Are you able to connect using fluidterm or other senders over the same method?

I’ve been connecting via USB in Lightburn.
Checked with current version of LaserGRBL and bCNC and both these connect and work no problem via USB. Also can access the FluidNC web GUI can control all OK.

I then found I can connect Lightburn v1.1 over the WIFI connection and this worked, I got a connection.
So it seems there is something with v1.1 and USB with FluidNC.
I found another forum thread that has the same issue but no resolution
[Custom Laser engraver ESP32 (GRBL 1.3a) not connecting]

Was keen to try the beta 1.2 but can’t seem to locate the section in the forum. can you please advise how this is done.

Thanks

Can you send your device settings please?

Beta is currently invite only, I apologize. But I can tell you that 1.1.04 is also working as expected here.

Sorry not sure what you mean. FluidNC uses a config file and the machine set up interface doesn’t work.

What would you like me to send.

I believe @JoeSpanier is asking for a screenshot of Edit->Device Settings.

it would be helpful to also get your support data. go to Help->Generate Support Data. Then paste that into a new reply.

Here is the screen shot of Device Settings

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Try “Enable DTR signal.” Worked for me.

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I can’t believe it. DTR enable WORKED.
Thankyou for all your assistance.
Now I have another issue (with Rotary axis) but will investigate more first.

Thanks Again.

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Thats interesting that Enable DTR worked. We will note this for the future. Do you know what control board you have? I know its ESP-32 based, but is it Barts 6-Pack, or the Fystec, or MKS board?

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I can’t speak for Aleka, but I’m using Bart’s ESP32 CNC Development Board v4.1 and I need to have DTR enabled.

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I’m just using a generic board connected to an original StepCraft 300 via DB25
This is the one I’m using https://www.jaycar.com.au/esp32-main-board-with-wifi-and-bluetooth-communication/p/XC3800

It’s all working great still and I’ve done about 18+ rotary laser jobs on some microphones with no issue,
except for having to swap the X & Y as the rotary is running in the Y axis not X like most and LB can’t deal with that from what I’ve discovered.
This was easy to do with FluidNC though by sending command to use a different config file, but make it tricky to do jogging, just gotta turn my head sideways to get the axis arrow right :slight_smile:

S

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