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Hi, normaly i only read in this forum, but now i have to ask about the G41/G42 funktion.
There are many discussions about whether G41/G42 calculates the approach route correctly or not.
I don't want to pursue these discussions any further, but am more interested in a solution.

It is possible that LinuxCNC can approach correctly with a sufficiently large radius. Unfortunately, I have not yet figured out how to work around the problem if I do not have enough space. I would like to mill a Ø5 hole with an Ø4 end mill.
How is it possible to mill the hole with linuxcnc and G41/G42 without already activating the G41/G42 above the part?

All CAM systems known to me only support the normal G41/G42 but not the Linuxcnc version. I have already tried to convert the coordinates in PP, but so far without success. Does anyone know a solution for this?

As I am not the only one with this problem, it would be advantageous if linuxcnc supported both versions. Maybe a G41.2/G42.2 could be the solution.

Best Chris
 

Hi,

At this stage, we are able to plot something with gnu plot.

In the main.c there is a 2d & 3d example.

When having problems, i decided to revert to implement the 2d solution from eq.46, to get a more simpler overall calculation.

To focus on the 2d solution. The plot is not as should be.
It plots 4 connected clothoids. But the start angle of upcoming clothoid looks to be inverted.
The clothoid compound start, end angle seems to be ok. Start at 45 degrees, end at -45 degrees.

This 2d examples does not focus on the transformation equations. As these transformations can be seen completely seperate.
And it does not use the dogleg solver. It turns out without dogleg solver, initial guess values are most of time ok.

For 2d, there are 2 unknown variables. y21 & s1. In the sample i set a value for y21=1 & for s1=1, this seems to work ok.

Reviewing my code would be appreciated.

updated source
Here is the 2d plot.


 

I don't want to say anyting bad about mesa and I can't because those cards are great. What I said is that I have never heard of stock machines which are made with mesa cards except tormach. And that the market is mainly in the retrofit and hobby niches.

Built an image with Armbian and chose "Bleeding edge" kernel with this config , booted from sd (nvme got recognized though)
Isolated core 7 and added the following environment setting so linuxcnc 2.9 will work with RT priority (not needed with a recent 2.10 build):
echo 'LINUXCNC_FORCE_REALTIME=1' | sudo tee /etc/environment

First tried with cinnamon (X11) it works but it isn't smooth, you can see the cursor flickering sometimes.
After that tried Gnome on Wayland, this works smooth.
HDMI audio doesn't work yet with 6.13, but the patches are sent so possibly it will work from 6.14
gitlab.collabora.com/hardware-enablement...n/mainline-status.md

Somehow when I run latency-histogram with base thread, the latency of the servo thread goes over 100us. Without the base thread it stays below 10us, so with Mesa it'll work perfectly fine.

It works fine, but I'll self stay with the vendor kernel 6.1.75 for now because it still works great for months without any problems.

 

Hi,
So I am trying to move the machine to inside the Soft Limits as when I put the mill/cnc back together the limit switch limits have been breached. I have tried to switch off limits, however, what is the easiest approach to put the X, Y and Z in mid point so I can complete a homing process.

What is the process to move the X, Y and Z axis back to mid point, when the machine says cant because limits activated?

In addition, how do I make sure that the correct positions, X, Y and Z are Min and Max.

Are the following correct?
Left X = Min, Right X = Max
Front Y = Min, Rear Y = Max
Top Z = Max
Bottom Z = Min

Thanks.

Yes, thanks, I understand NO and NC, my question is relating to the reference to the PINS.

There was a reference to use "different" pins. The 7i96S has a set of inputs.

I have it currently wired Ground Common.

So for simple answers:
Can i use mixed NO/NC switching (Common 24V) on the exiting 7i96S Input pins with Ground common?
Do I just use invert when using NC configuring for this to work as designed.

Thanks,

@ phillc5 4: "the zip file I could save to my laptop, thank you!", if I can do anything with it is now up to me once again. But I will try.
 What "newstart" is I do not know, so I cannot comment on that one.

Greetings Timo.


 

phillc54 wrote:

I think that there are issues with https on the wiki, try http:
wiki.linuxcnc.org/uploads/hobbing.zip

 

Yes it was mentioned on the mailing group, the wiki is on the same server as Linuxcnc.org and the Lets Encrypt SSL certificate did not include the wiki subdomain...

I was after 12 hours of milling parts in the shop, and another 5 hours of trying to set up linuxcnc, so don't be too angry in your judgment.
I also solved the problem as follows:

sudo nano /etc/X11/etc/X11/xrdp/xorg.conf
search for OPTION "DRMDevice" line
and replace with
Option "DRMDevice" ""
save, reboot and all work fine after!

Please be respectful, you can be helpful without being insulting. I am on a desktop. I didn't see the ??? and thought it may be a rhetorical comment. In any case the point is moot. I believe the solution has been found. See last post. Thank you again for your help.

can we use mesa with the existing ferrocontrol motors?
And what mesa cards do we need in total?

On a side note, my employer also said he wishes to have another rotary milling head attachment, a circular saw with multi-axis movement. For this attachment, are there any extra things I need to consider when deciding the parts?

See once again completely ignoring a simple question. Do you have learning difficulties ? Or some other condition that prevents you from giving information ?

Honestly I don't care, you've been one of the most frustrating people lately, and that's saying something considering we had another numbnut insisting there were packages contained in the RPi images that were never meant to be installed.

I know I'm in breach of CoC but you're in breach in being a reasonable human, shame the tranzes didn't think of that when they were playing Gestapo.

I don't know why you insisted on saying that it was so, when I clearly told you I created the images and did not have those software packages installed.


Sometimes I don't know why I even fucking bother.

Thanks for all your suggestions, I believe my issue has been solved (see my last post) I hope to confirm the solution worked after I install to the newer hard drive.

You don't need the system connected to a cnc machine to stress it. The docs clearly state what is the recommended way to stress your machine. Yes I do recommend RTM.

Just to be clear, are you attempting to use a desktop or a laptop, some searches on the model in the jpeg come up as a laptop other come up as a desktop.
Laptops, apart from from some Thinkpads Tommy has tested, are unsuitable for Linuxcnc.