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  • NTULINUX
  • NTULINUX's Avatar
03 Mar 2025 08:02 - 03 Mar 2025 08:03
Replied by NTULINUX on topic LinuxCNC on Intel Clear Linux

LinuxCNC on Intel Clear Linux

Category: Installing LinuxCNC

My Gentoo installer+image has been published. I tuned it as much as possible, I don't think Clear Linux will be much faster than what I have, if not slower.

github.com/NTULINUX/gentoo_backup/releases/tag/v0.3-alpha

openlunchbox.com/mw19/index.php/HOWTO:_Gentoo_for_LinuxCNC

If you're using the installer on Bookworm, start here:

openlunchbox.com/mw19/index.php/HOWTO:_G...tching_the_installer
  • unknown
  • unknown
03 Mar 2025 07:37

Signal wires: please provide guidance on shielded wires I should use

Category: Computers and Hardware

To tell the truth for connection of step & direction from my 7i76 to the drivers I didn't bother with shielded cables.
When I get around to the limit switches I may use shielded cables, I don't know.
But what I was very particular about was the path of the power cables.
AC power was physically isolated as the installation allowed, at no instance would I allow AC power to cross any signal wire.
At the same time DC power was physically isolated from the AC power and any signalling.
The basic plan was AC/DC run on one side of the cabinet and signals on the other side.
What made my install easier in the above is I used an 18 unit rack cabinet, used upright rails in the middle of the cabinet, thereby giving me twice the area to install gubbins, AC power was assigned to one side of the partition, think relays auxiliary power and such, and the PC Mesa cards and such on the other side all mounted to metal plates.
Another thing I employed, maybe over the top, is using a seperate power supply for powering the relays and contactors that regulate the AC power supplies used elsewhere. All power supplies are controlled via a No Volt Return setup, as I'm lazy I made some PCBs to make the wiring easier, so if I do lose power, thanks to Labor's green madness, the power doesn't come back on and suprise me.
Meanwell & Wiedermuller PSU are used throughout, the servo drive that Powers the AC spindle motor has been installed with the required AC filters and line reactor.
So far I've no issues with interference either from the mill and mill electronics nor with any appliance in the house.
Ok back to your original question, I would have a look on AliExpress for cabling, they seem to have a large range. Some of our local stuff, Jaycar Altronics et all are kind of expensive.
Whatever your do use bootlace ferrules, good quality crimp connectors, do not solder the crimp connectors. A good quality crimp cold welds the wire to the connector, same as wire wrapping. The solder has a tendency to whick up the wire and create a "solid" point where with the right amount of movement it will fracture. Forget what any "YouTube" guru says about soldering they are wrong. Buy good quality crimps and crimp tools, there's a company in Engadine NSW Ive bought all my stuff from and never had an issue.
Ok I come back with some photos and such. Bear in mind this is for a mill install, a plasma setup will have more requirements, Tommy or Rod hopefully will chime in .

I've probably forgotten way too many things as well.
  • gpenzo
  • gpenzo
03 Mar 2025 07:27
EL6751 native support was created by gpenzo

EL6751 native support

Category: General LinuxCNC Questions

Hi guys.
For my work we are controlling robots with the use of ek1100 and two el6751.
I made a driver together with etherlab where you can use linux native can0 and can1 to control can devices.
I control multiple servo motors.
Are there any developers who want to know the design and how I did it. Also there is a bug in the EL6751 eeprom, took me a long time to find it out. With my fix and driver native linux can communication with el6751 is easy.

Regards Grayson

 
  • vre
  • vre
03 Mar 2025 07:04
Replied by vre on topic X axis following Y axis

X axis following Y axis

Category: Advanced Configuration

Can all this operation of unrolling to be transparent to gcode?
For example to have a gcode of cutting
diagonally a sheet of 10m.
plasma if y axis is 2.5m must start and stop
4 times.
Can this handled automatically without specific gcode?
  • NTULINUX
  • NTULINUX's Avatar
03 Mar 2025 06:48

Gentoo Image, Which Applications are in and Which are Out

Category: General LinuxCNC Questions

The image has finally been posted:

github.com/NTULINUX/gentoo_backup/releases/tag/v0.3-alpha

Do not use the tarball directly as it meant to be used with the installer.

For some reason, the axis interface doesn't work due to this bug:

github.com/LinuxCNC/linuxcnc/issues/3205

I previously had qtdragon working, however, Gentoo is moving away from Qt5 so all GUIs that depend on Qt5 will not work. I highly recommend using gmoccapy unless you want to help me figure out why axis doesn't work. :)

I'll be working on an RTAI image soon, but for now, only PREEMPT_RT is supported.

Instructions:

openlunchbox.com/mw19/index.php/HOWTO:_Gentoo_for_LinuxCNC

Please note, I switched the checksum from SHA-1 to BLAKE3/b3sum, so you must have b3sum installed if you are using the installer on Debian. I don't think SystemRescue comes with it either but it is much faster and more secure to use BLAKE3 over SHA-1.

FlexGUI also works, so if you use it, you're in good hands. Turboss and Lcvette (I think it's Lcvette) is working on porting qtpyvcp to pyside6 (Qt6) so qtpyvcp should be working in hopefully the near future.

If you're using Debian, you can start the guide from here:

openlunchbox.com/mw19/index.php/HOWTO:_G...tching_the_installer
  • behai
  • behai
03 Mar 2025 05:32

Signal wires: please provide guidance on shielded wires I should use

Category: Computers and Hardware

I understand that for signal wires, those from proximity switches and stepper drivers to controller cards, we should use shielded wires.

I am in Victoria, Australia. I am unable to find just "shielded wire", but there are shielded audio, video, data and microphone wires available, for example:

www.altronics.com.au/cable/shielded/?brw...j8i_PHDnOkyFmM9mya9r

I need shielded wires to connect:

1. CL57T-V1 stepper driver's PUL+, PUL-, DIR+, DIR- to Mesa 7I96S.

This driver is rated 24-48VDC, and 3 output currents setting of 2.8A, 5.6A and 7.0A.

Manual: www.omc-stepperonline.com/download/CL57T_V4.0.pdf

2. NPN NO proximity switches signal output to Mesa 7I96S input.

Switch: www.makerstore.com.au/product/elec-lj2a3/

It is rated DC 6-36V, 300mA.

Would you advise on correct shielded wires to use, please?

-- I have only known of "shield wires" about 3 months ago. So please kindly excuse this very basic question. I've only started learning.

Thank you and best regards,

...behai.
  • rodw
  • rodw's Avatar
03 Mar 2025 04:33
Replied by rodw on topic Hurricane Milton

Hurricane Milton

Category: Off Topic and Test Posts

  Well this sucks. My area only got side swiped by Helene and it still did heavy damage. Now we have Milton and it's projected to smack
into or very near my area as a Category 3/4. 

Our turn down under! Cyclone Alfred is barelling down on us (about 350 km away) and is expected to  make a direct hit on Brisbane where I live in the next couple of days. Its been 50 years since the last Cyclone hit causing the 1974 floods in the Brisbane river catchment. Looking forward to  7-10 metre high seas, high winds and  300-400mm of rain coming along with it. Dams are already full at about 98% capacity so its likely to be pretty massive when it hits... 
Glad I live on a hill :)
It seems pretty surreal, as its not even raining yet!
  • unknown
  • unknown
03 Mar 2025 03:48
Replied by unknown on topic The dumification of humanity through internet

The dumification of humanity through internet

Category: Off Topic and Test Posts

What worries me about when the educated fight back it's the young & healthy that pay the price.

I'm curious, always have been, mum tells a story about when I was 3 I managed to dismantle a lock and go for a walk to the shops with the dog in tow.
I was lucky my grandfather could do almost anything with his hands, and as young kids are they always want to be like their hero.
  • unknown
  • unknown
03 Mar 2025 03:44
Replied by unknown on topic Motion Control in the kernel

Motion Control in the kernel

Category: General LinuxCNC Questions

They're experts, our superiors, we're just the mugs at the coal face.

I think it's like the guy who only has a hammer in his tool box, everything can be solved by a hammer.

Tho I think the kernel has bigger issues at hand, the whole Rust thing & Linus thinking about stepping down or taking a back seat at the least.

And honestly what machine operator\owner wants rust around their machine ?
  • noqui
  • noqui
03 Mar 2025 00:03
Replied by noqui on topic Reading Barcode data

Reading Barcode data

Category: AXIS

Hastrh2o Can you share and example? Thanks a lot. 
  • tommylight
  • tommylight's Avatar
03 Mar 2025 00:00
Replied by tommylight on topic LinuxCNC 2.10 build

LinuxCNC 2.10 build

Category: Installing LinuxCNC

Ubuntu 24, so try this
sudo apt update
sudo apt install linuxcnc-uspace
That should install all the dependencies and a fairly recent version of 2.9.4
Wait, i just saw 2.0 ??? What? Why? How? hmmmmm...
  • tommylight
  • tommylight's Avatar
02 Mar 2025 23:57
Replied by tommylight on topic Motion Control in the kernel

Motion Control in the kernel

Category: General LinuxCNC Questions

What? No swearing and cursing? :)
Very well worded, thank you Rod.
Makes me wonder, how come none of those there know about LinuxCNC???
We need some marketing, any ideas?
  • tommylight
  • tommylight's Avatar
02 Mar 2025 23:53
Replied by tommylight on topic The dumification of humanity through internet

The dumification of humanity through internet

Category: Off Topic and Test Posts

You are right about educated people, but at some point they stop and fight back, and if history is a frame of reference, almost always to late. :)
As for you, i do not agree at all, just your knowledge of computers sets you way above the "medium".
  • unknown
  • unknown
02 Mar 2025 22:22
Replied by unknown on topic The dumification of humanity through internet

The dumification of humanity through internet

Category: Off Topic and Test Posts

Actually highly educated can be easily controlled as well. Would you like being told everything you've thought to be true is wrong. Would you like to be thinking in a way that would get you ridiculed .....even cancelled in this current climate ?

I don't think education is the full story, it's whether you want to take the time to look into things and question common beliefs. Being inquisitive is the key.

There's also the thing about wanting to fit in as well, many people want to fit in, I guess that comes down to human nature. Just because there's a consensus doesn't mean it's so.

By all metrics I'm classed as lowly educated.
  • unknown
  • unknown
02 Mar 2025 22:14
Replied by unknown on topic Motion Control in the kernel

Motion Control in the kernel

Category: General LinuxCNC Questions

It's on page 2.

Just reread the comments of the "experts".....hmmmm interesting
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