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  • meister
  • meister
24 Apr 2025 13:18
Replied by meister on topic Umstieg auf LinuxCNC mit RaspberryPi4

Umstieg auf LinuxCNC mit RaspberryPi4

Category: Deutsch

Moin,
willkommen im forum.

für den Raspberry gibt es auch einen Parport adapter, so könnte man ein altes alte Mach3 BOB vielleicht weiter nutzen:

byte2bot.com/products/parallel-port-raspberry-pi-hat

aber es kommt auch immer darauf an was man vor hat, es gibt da einiges an hardware die man nutzen kann: Mesa, Remora, Rio, GPIO.

Gruß Olli
  • Chef_2
  • Chef_2
23 Apr 2025 22:39

Umstieg auf LinuxCNC mit RaspberryPi4

Category: Deutsch

Servus,

ich spiele schon länger mit dem Gedanken, auf LinuxCNC umzusteigen... jetzt habe ich gesehen, dass es das auch für den Pi4 gibt.... umsobesser :D

Die erste Frage ist nun aber, welche Steuerungsplatine sollte man hinter dem Raspi nutzen ? Aktuell habe ich Mach3... aber das mit der Echtzeit und alter gefällt mir nicht mehr!

Wer hat hier Tips für die Hardware zusammenstellug ? Handrad sollte auch noch her!
  • fletch
  • fletch's Avatar
23 Apr 2025 14:58

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

That would be lovely - the CM5 has one but then you need a carrier board and I don't know if the LinuxCNC image would run on the CM5/eMMC? With the right carrier board would be perfect though...
  • unknown
  • unknown
23 Apr 2025 14:54

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

Dunn why RPi doesn't add a connector for an external antenna.
  • fletch
  • fletch's Avatar
23 Apr 2025 14:35 - 23 Apr 2025 14:37

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

Just for completeness and to save anyone having to mess around with compiling kernel modules, here is what looks like a fairly comprehensive (at least until 6.13) list of in-kernel USB WiFi devices: github.com/morrownr/USB-WiFi/blob/main/h...in-kernel_drivers.md

Discovered it a little late but I think only one has an RP-SMA connection.
  • fletch
  • fletch's Avatar
23 Apr 2025 10:36

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

As the image is a custom one, only the kernel is built from RPi Sources.
This pretty clear, I would have thought.


To one well versed in building distributions, yes, but not necessarily to one who has only used distributions! Not until now, anyway ;-)

Where as you were attempting to install headers from the Debian repo

 
I was but at that point, didn't realise the significance of the kernel being sourced from a different place to the base distribution.

The kernel should load the drivers without any user intervention.

 
It does now load on boot.

Thank you.
  • unknown
  • unknown
23 Apr 2025 10:24

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

As the image is a custom one, only the kernel is built from RPi Sources.
This pretty clear, I would have thought.
Where as you were attempting to install headers from the Debian repo

The kernel should load the drivers without any user intervention.
  • fletch
  • fletch's Avatar
23 Apr 2025 08:05

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

Thank you very much for your replies. I did read all of this thread (all 7 pages!) but didn't quite make the connection that the linux-headers would be named differently for rpi. I've used the 'sudo apt install linux-headers-$(uname -r)' a fair few times in the past but it's the first time I've noticed a mismatch between uname and the installed headers. Every day is a learning opportunity - even with a Bank Holiday brain.

I also did try just plugging the dongle in but according to this the drivers are not merged into the kernel until 6.13. The WiFi in my workshop is pretty weak - my NUC with two antennas struggles to with signal from the AP - I suspect the foil faced insulation board is creating a bit of a Faraday cage. And it's the ISP supplied router/AP at that end.

Once I'd 'discovered' the headers were already installed, I did the Basic Installation for All Distros and success!

For anyone else following along, the RTL8811AU chipset requires the rtw_8821au driver to be loaded (modprobe'd) as per this issue .

Thanks again, much appreciated.
 
  • unknown
  • unknown
22 Apr 2025 21:16

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

Drivers build & load without having to install any "extras".
git clone https://github.com/lwfinger/rtw88

cd rtw88

make

sudo make install

sudo make install_fw
  • unknown
  • unknown
22 Apr 2025 20:44

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

The kernel is a custom one based on the RPi sources, as such the kernel headers are preinstalled.
If you read the very first post in this thread you will realise that the image is based on Debian 12 with a RT kernel based on the RPi sources.
I have my Pi in a metal enclosure and haven't noticed any issues with wifi. Your mileage may vary.
Have you tried plugging in your dongle and checked if the kernel loads drivers ?
  • fletch
  • fletch's Avatar
22 Apr 2025 16:29 - 22 Apr 2025 18:32

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

I hope this is the right thread, please move if it isn't...

I'm investigating converting my NUC to a Pi 5 - the install from the official Pi5 image went perfectly but as I'm using a Mesa 7i96 and the Pi will end up inside the cabinet, I need to use a USB WiFi adapter for its external antenna.

The dongle is a Reaktek RTL8811AU (external antenna'd ones seem to be getting rare) so I think I need to install this: github.com/lwfinger/rtw88?tab=readme-ov-file#installation-guide Happy to be corrected if I don't because I'd rather not.

If I do a
uname -r
I get 6.12.11 but this:
sudo apt install linux-headers-$(uname -r)
is "Unable to locate package linux-headers-6.12.11"

An apt search reveals a bunch of 6.1.0x Linux headers and a few 6.12.12+bpo headers but no 6.12.11. Not sure what to do now, so any guidance would be appreciated - even if it's a link to a natively supported USB WiFi!

Edit: Running
apt list --installed | grep headers
instead of apt searching for 'linux-headers-6' reveals 'linux-headers-bcm2712-rpi/now 6.12.11-1 arm64' are already installed. Why the headers don't match the uname -a is slightly above my pay grade.
  • Moutomation
  • Moutomation
22 Apr 2025 11:39 - 22 Apr 2025 11:42

Ethercat installation from repositories - how to step by step

Category: EtherCAT

Hello,
I am installing ethercat but the communication light with the drivers is not flashing and it is not communicating with the drivers.
raspberry pi 5 
rpi-5-debian-bookworm-6.12.11-arm64-ext4-2025-01-27-0140.img.xz - linuxcnc 3.5.9
I used to use linuxcnc 2.9.3 and there was no problem.


 
  • pgf
  • pgf
22 Apr 2025 02:13

After homing X and Y, can I auto move to a non 0,0 location?

Category: General LinuxCNC Questions

Heh. I would have to say probably "yes", to both. LOL.

It's a DIY mill. In 1993, II got it as a kit, which included the stepper, a driver board (which did just raw coil driving -- not even step/dir!) along with plans for a chassis made of particle board, rails from high quality drawer slides, and all-thread rod as the transport. The s/w that came with it was written for DOS, polling loops and all.

There have obviously been a lot of upgrades over the years: EMC/LinuxCNC in 2004, acme rod for X and Y (Z still uses the all-thread) a lot of chassis strengthening, a real step/dir driver board maybe 10 years ago, and a Mesa card and Raspberry Pi this year. But it still has the same steppers, and the linkages and threaded shafts aren't all that well aligned. Frankly, I'm amazed it all kind of still works. But I have fun with it... when it's not driving me nuts!

Pictures here: projects.foxharp.net/cnc/
  • unknown
  • unknown
22 Apr 2025 00:26

Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!

Category: Installing LinuxCNC

Thanks for your input. Keyboard input is USB, so meh, not a lot that can be done about that.
  • unknown
  • unknown
22 Apr 2025 00:23

Linuxcnc 2.9.2 and 2.93 images for Raspberry Pi 4b & 5

Category: Installing LinuxCNC

Use the official fan & heatsink, it works well and you'll have no issues. I've left mine on for days at a time during the summer in Australia and nothing has gone wrong.

I prefer a wired pendant, connected via a Mesa 7i73. It's solid and you don't need to worry about disconnections. Just axis & step selectors with a hand wheel. Tho Rod does us a fancy wireless one.
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