Hi,
We have a couple of CNC machines running a mesa board with very similar NUC Intel PCs running LinuxCNC
The Mesa board should greatly reduce critical timing requirements for the host machine, I've turned off everything in the bios that is suggested and whenever I run a jitter test I get decent looking numbers. But sooner or later I always seem to get a communication error, apparently related to timing, it's like sooner or later something somewhere holds things up for just too long.
Now one PC has died (power supply failure) so it needs to be replaced anyway, and I'm wondering whether we should try going down a different path with something ARM based such as a Pi 5.
So, is it a good idea? Will it improve things? Are there other better/cheaper allternatives?

regards
Jonathan

yeah I sadly left it at tmp then I needed to reset to isolate the cores so the screenshot is gone sadly. I only remembered after I started writing the post. sorry

Hello I am very new to everything so I don't know much

I have downloaded the rpi image from download page and installed it with Raspberry Pi Image app and I found my latency and histogram very bad.
I had installed linuxcnc a long while ago with the same stuff it was bookworm then so I was very worried and though I might just go back to that image but I notice something on histogram it said no_isolcpus. which I remember that I read that core 2,3 should be isolated so I googled how and isolated them and the latency became much better.

I took a screen shot of the histogram but it was saved in tmp /media/kunena/emoticons/

Thanks for the info tommylight. The use of the raspberry pi zero 2W wasn't my first choice, it became a requirement 
for a work related project I am working on (physical size constraints). As far as me using AI lets just say I have been
very reluctant to use it partially because of the incessant push to install data centers everywhere the tech bros can
put one (consequences be damned), the price of parts (that's a big one), and me not knowing how to efficiently use it. LOL.
  I will give your recommendations a try.  

Muzzer how problematic has it been to vibe code programs. I am thinking of trying it on a few ideas
I have floating around in my head. I have been learning Python coding but it has been a frustrating 
journey to say the least. I'm also using Raspberry pi zero 2w so that may have something to do with it
And as luck would have it I am thinking of using Claude Code.

Hi everyone,

I came across a piece of CNC controller hardware running LinuxCNC. Does anyone recognize this setup or know who makes it?

I checked the system over SSH and found:

- Raspberry Pi Compute Module 5 Rev 1.0
- 2 GB RAM and 16 GB eMMC
- Debian 12 Bookworm
- LinuxCNC 2.9.3
- PREEMPT_RT kernel: 6.6.54-rt39
- CPU configured to run at 1.8 GHz
- Realtek RTL8111/8168 Ethernet controller using the ec_r8169 EtherCAT driver
- EtherCAT master 1.5.2
- WCH USB device (1a86:5537) using a custom ch37x driver, with /dev/ch37x0
- PCF8563 RTC
- Connected touchscreen

The EtherCAT master is detected, but its link is currently down and no slaves are connected.

Does this look like a known commercial controller or a custom carrier board? I would appreciate any information about its manufacturer, model, hardware revision, or available documentation and LinuxCNC configuration files.

Thanks!
 

I am installing a M.2 SSD. Can I copy my current boot image from the SD card to my SSD?
I am running this on Raspberry PI5

thanks for your help 

I am configuring my CNC with a 7i97t, but I don't have that problem. I have a Mean Well 5V 10A power supply with a ground connection for the Mesa and the Raspberry Pi 5; the Mesa needs to be grounded near the RJ45 jack, where it is marked "frame ground."

 I'm having an intermittent issue with a Mesa 7I97T on a Raspberry Pi 5. Occasionally CR7 comes on and stays on until I reset the board.The 7I97T is powered by a Mean Well 5V PSU with no earth connection. The 5V negative is floating, and I measure about 100VAC between 5V- and cabinet earth.Does anyone know what specifically causes CR7 to latch on like this? Is there anything in HAL/HostMot2 I can log to find the cause?Also, should the 5V negative normally be bonded to cabinet earth, or left floating?
Thanks all!

Thanks for the information.
I`m sure there are some facilities, but it`s probably only worth it, if your device costs several hundred dollars or is not available anymore. Google told me that simple repairs start from 120$ and more. A bit too much, unless I can be 100% sure that it works afterwards.

I`d love to send it to Mesa directly, but last time i wanted to order two cards, the shipping calculator presented me with a 250$ shipping fee. Todayy it`s 98$, but import taxes and tolls allways work in mysterious ways according to my experiences, so I refuse.

If nothing works, I can still use it as a huge I/O expander with a second ethernet port. I saw a video on youtube, where they connected two ethernet cards to the host with an ethernet switch. I think i read that one should avoid switches in favor of a direct connection, but my Raspberry only has one ethernet port. I will probably try it, if i order a new 7i76eu.

Anyway, thanks for the help.

After running a few tests, it appears that, in my case, the problem was caused by a missing software package. Installing gir1.2-rsvg-2.0 fixed the issue for me.

It is also worth mentioning that I installed Glade and configured it to use GTK 3.16 and WebKit2GTK 2.28.

For reference, I am running LinuxCNC 2.9.8 RMD on a Raspberry Pi 5.

Hopefully, this helps anyone experiencing a similar issue.

Is it a Pi5 or 4b? the 4b was always a bit marginal but some say the 5 is flawless for them.

You could try the Respberry way perhaps. Once you get the RT kernel sorted, just compile linuxcnc

forums.raspberrypi.com/viewtopic.php?t=396623