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  • rodw
  • rodw's Avatar
09 Jan 2025 05:00
Replied by rodw on topic LinuxCNC on Raspberry Pi 5

LinuxCNC on Raspberry Pi 5

Category: Installing LinuxCNC

As far as I have been able to see there has been no major hardware updates to the RPi5. Or are you referring to the ability to boot from NVME ?
 

I think there has been a lot of improvement under the hood including making the 6.12 kernel available.But yeh, not something you can really see.
  • Cong
  • Cong
09 Jan 2025 04:10

linuxcncrsh problems,received_serial_number (1212501068) does not equal expected

Category: General LinuxCNC Questions

log:

libnml/cms/tcp_srv.cc 694: received_serial_number (1212501068) does not equal expected serial number.(0)
(time=1736393516.203628,pid=13259): TCPSVR request received: fd = 6, serial_number=1212501069, request_type=1327514957, buffer_number=1124928083
libnml/cms/tcp_srv.cc 1501: Unrecognized request type received.(1327514957)
 
  • pob2
  • pob2
09 Jan 2025 03:15
Replied by pob2 on topic mesa 5i20 and DAC

mesa 5i20 and DAC

Category: Driver Boards

Hi PCW,

Thanks for your reply, I was told they were working when I bought the machine but haven't been in a position to start fault finding yet or check that this is true. (The guy I bought it from didn't know what the problem actually was though, so everything needs to be checked).

I'll report back after a month or two and I'll look into those boards you mentioned.

Thanks again for replying and any other help you can think of :-)

Pat
  • PCW
  • PCW's Avatar
09 Jan 2025 02:53 - 09 Jan 2025 03:31
Replied by PCW on topic 7i96s Questions

7i96s Questions

Category: Driver Boards

The first P1 encoder is  encoder 1 so the position would be:

hm2_7i96s.0.encoder.01.position

and the most important parameter for that encoder would be:

hm2_7i96s.0.encoder.01.scale


 
  • PCW
  • PCW's Avatar
09 Jan 2025 02:33
Replied by PCW on topic pncconf Clearpath SDSK settings

pncconf Clearpath SDSK settings

Category: General LinuxCNC Questions

What I would do is get a basic working configuration with pncconf.
This means setting the machine limits, scaling, directions, timings,
velocities, and accelerations. Once this is working I would then worry
about tuning for best performance and  special features like drive fault
operation.

That is, don't get the sandpaper out when you are still in the chainsaw stage.

 
  • Cant do this anymore bye all
  • Cant do this anymore bye all's Avatar
09 Jan 2025 02:17
Replied by Cant do this anymore bye all on topic RPi 5 with 6.12 PREEMPT_RT = Using POSIX non-realtime

RPi 5 with 6.12 PREEMPT_RT = Using POSIX non-realtime

Category: Installing LinuxCNC

The real time thing in the kernel seems a little confusing at the moment.

Unless a change is made to the /arch/Kconfig file you are unable to select a fully_preemptible kernel, which would appear the one required for Linuxcnc, the available info refers to this as RTOS. I'm not exactly clear about the amd64 kernel, as ATM I've only been interested in arm64 and specifically the bcm2712 kernel. I have tried the change the above mentioned file and can confirm the behavior.

Unfortunately I don't have a free SD card for testing and unable to get out to obtain one. So I can't comment on the kernel when booted, which is frustrating as I like to test things before commenting.

There is also the ability to select the type of real time kernel with via the kernel command line.
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