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  • unknown
  • unknown
18 Oct 2025 08:42
Replied by unknown on topic Update LinuxCNC 2.9.5 on debian 13

Update LinuxCNC 2.9.5 on debian 13

Category: Installing LinuxCNC

Here comes the "Grumpy Old Man Response".

1: That's your method. I was held back from including gnome network manager, a situation that didn't sit well with myself. Which is great as the user can have the option of enabling and disabling wifi as required. Adding this will be an improvement (as will the turnng off of the power saving features of the wifi, something I haven't recommended as thb I could see it being more hassle that it's worth to describe what is required, delving into systemd is required). Tho I did manage to sneak in gvfs-backends & gvfs-fuse. The zram swap thing was a bit of a debacle, something I blame myself for not fully checking the swap, which did rear it's head. Yes I get the ID Ten Tea award for that.
2: No patch was required for RT_PREEMPT, that was part of the Vanilla Kernel that was selected (which required thought put into it) and many thanks to a certain member that helped clarify a few things regarding that, any patches applied were those that the RPi Foundation has on their github, no trickery on our side. Until their particular patches make it to the mainline kernel they will always be applied.
3: You could of asked. Now this is really the bit I thought was a terrible assumption to make.You think those that manage Linuxcnc allow randoms to upload untested content to their server ? That is something extremely silly to assume, especially with 20 years of Linux experience.
4: Up to you.
5: That's people assuming things regarding the menu config. It has been clearly stated that whilst the image runs on the RPi and the kernel has been sourced via the RPi Foundation, it is Debian at is core and not RPi OS. Someone who thinks critically would assume that there would be differences in how things are done. Not understanding, excepting or realising that that things will always be the same way on a particular platform is rather naive (I would say silly myself).Apart from the kernel and a couple of RPi specific utilities, Debian was the easier solution. Basing anything on RPiOS requires removing a lot of Raspberry Pi Foundation branding from any image that was built and distributed. Hence the reason there was a switch from using Ubuntu in the emc2 days to Debian now.

Being able to actually install Linuxcnc & a required kernel onto a Raspi OS image would have been infinitely simpler, but the copyrighted branding becomes an issue. Which is their right and a good thing as well as it a protection for users, as a lot of people will blindly down load this or that. Hence scammers have it easy.
Supplying instructions for getting Linuxcnc on a Raspi image may have been one way, but people being what people are. I used to be a traffic controller and have lost confidence in people being able to follow instructions or wanting to.
  • f355
  • f355's Avatar
18 Oct 2025 05:54
Replied by f355 on topic Update LinuxCNC 2.9.5 on debian 13

Update LinuxCNC 2.9.5 on debian 13

Category: Installing LinuxCNC

Ah, I did not realize the images were yours, I thought it was the great cornholio dude (is that your old account, maybe?) and rodw who worked on them for some reason. That explains your interest in my setup, cool, I can certainly give you some feedback on why I chose RPi OS.

1. as mentioned before, I can't connect to wi-fi without running menu-config, and to run it, I need either a console or Ethernet. Connecting either is a hassle for me, I tend to run my Pi's headless with TigerVNC/noVNC. I've briefly looked at the rpi-image-builder the images are based upon and it seems like it's possible to mount the boot partition and edit some text file there so it sets stuff up on the first boot, but I have not dug deep - with RPi OS I can set that up in RPi Imager, together with the ssh key, the username and other stuff, it's much easier and it just works.

2. The kernel is custom-built from source with an RT patch, which makes it tricky to update it if I ever need to. There are now official RT kernels in the RPi apt repo and I can just apt install the new kernel. In general, the update cadence/mechanisms for the entire thing were - and still are - unclear to me.

3. I couldn't find the git repo where these images are built from. github.com/LinuxCNC/rpi-img-builder-lcnc is 2 years old, rodw's upstream is slightly newer but still older than the published images. It seemed like those images were built ad-hoc once by someone and just uploaded to the server, and that looked like a bit of a red flag to me.

4. cnc/cnc as default username/password is not something I want. I could create a user for myself, sure, but with RPi Imager I don't have to, so why bother.

5. this entire menu-config thing is not what RPi OS uses and what people - myself included - are familiar with. Not a big deal of course, but in general - Raspberry Pi has an official distro that is well-maintained and well-known, and I don't see why I, for one, should use something else in the second half of 2025. I understand why your images were built in the first place - PREEMPT_RT was not mainline at the time, RPi OS tended to push Wayland aggressively, you wanted a turn-key solution that less experienced people could just write to an SD card and use, my headless requirement is rather uncommon, etc., etc., but my personal preferences kicked in and I made a choice.

I hope that clarifies it!
  • f355
  • f355's Avatar
17 Oct 2025 23:11
Replied by f355 on topic Update LinuxCNC 2.9.5 on debian 13

Update LinuxCNC 2.9.5 on debian 13

Category: Installing LinuxCNC

I'm sorry, what am I supposed to find in that thread? I don't have any questions about the LinuxCNC-provided image and never had. I came here to report a broken dependency in the apt repo, not to ask how to run LinuxCNC on an RPI.

Just to be clear, I have seen that thread, it is kinda hard to miss, and I've played with the image. For my personal preferences, I've decided to go with Raspberry Pi OS instead and I'm totally happy with it. What are we even discussing at this point?
  • f355
  • f355's Avatar
17 Oct 2025 20:48
Replied by f355 on topic Update LinuxCNC 2.9.5 on debian 13

Update LinuxCNC 2.9.5 on debian 13

Category: Installing LinuxCNC

I'm sorry if that came out sounding arrogant, that was not the intent. I totally understand why Tommy suggested apt update, I just wanted to quite literally save his and my time.

I can certainly build it myself, or use 2.9.4 that works just fine for my purposes, or whatever. I don't have a problem, LinuxCNC has a problem, and being unable to fix it for everybody, I'm reporting it here in hopes that someone blessed with permissions does that.

Raspberry Pi OS Lite doesn't come with a desktop environment or a window server pre-installed, so I'm free to choose what to use (XFCE obviously lol). PREEMPT_RT kernel is available as an official package from Raspberry Pi debian repos these days and works fine. I'm not sure what the "official" linuxcnc raspberry pi image would give me at this point, and it is much harder to use for me personally - it requires me to connect a display/keyboard, for example. As to libgpiod or axis, I don't use either so I can't say anything about them.
  • unknown
  • unknown
17 Oct 2025 20:23
Replied by unknown on topic Update LinuxCNC 2.9.5 on debian 13

Update LinuxCNC 2.9.5 on debian 13

Category: Installing LinuxCNC

With your 20 years experience if you really want 2.9.5 on arm you can always build it yourself. ;)
As for the version differences that will depend on the system the packages were built on.
Was there any reason, apart from the official arm image being based on Bookworm, that you went with Raspberry Pi OS Lite ?
Does that give you the choice of Wayland or X11.
Look we get a lot of users with varying degrees of Linux Experience, as we can't tell your experience usually we start advice with the basics. So no it's not a waste of time starting with said basics.
From memory when I attempted to build an RPi image based on Devuan, based on Trixie or maybe unstable, there was an issue with the libgpiod library. At the time the libgpiod driver would not compile against version 2.0 so I abandoned that idea due to that. As far as I know I'm unaware of that situation has changed. Bear in mind that there are some issues that affect Axis in 2.9.5 and 2.9.6 that have been well reported on the forum. It would appear they have been resolved but looks like we need to wait for a 2.9.7 version.
  • f355
  • f355's Avatar
17 Oct 2025 18:25
Replied by f355 on topic Update LinuxCNC 2.9.5 on debian 13

Update LinuxCNC 2.9.5 on debian 13

Category: Installing LinuxCNC

Thank you for fixing this, Andy, the new key works just fine!

However, the debian package itself seems to have a broken python3 dependency. I'm on the latest Raspberry Pi OS Lite (which is basically trixie with a custom kernel and a few Pi-specific tools installed). Any particular reason for the arm64 package to want python3 < 3.12? amd64 one depends on 3.13, and so does linuxcnc-uspace 2.9.4 that comes with trixie.
$ sudo apt-get install linuxcnc-uspace
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Solving dependencies... Error!
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 linuxcnc-uspace : Depends: python3 (< 3.12) but 3.13.5-1 is to be installed
                   Depends: libboost-python1.74.0 (>= 1.74.0+ds1) but it is not installable
                   Depends: libboost-python1.74.0-py311 but it is not installable
                   Depends: libgpiod2 (>= 1.5.1) but it is not installable
                   Depends: libpython3.11 (>= 3.11.0) but it is not installable
                   Recommends: linuxcnc-doc-en but it is not going to be installed or
                               linuxcnc-doc
                   Recommends: librsvg2-dev but it is not going to be installed
                   Recommends: hostmot2-firmware-all but it is not installable
                   Recommends: python3-pil but it is not going to be installed
                   Recommends: python3-pil.imagetk but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
E: The following information from --solver 3.0 may provide additional context:
   Unable to satisfy dependencies. Reached two conflicting decisions:
   1. linuxcnc-uspace:arm64=1:2.9.6 is selected for install
   2. linuxcnc-uspace:arm64=1:2.9.6 Depends python3 (< 3.12)
      but none of the choices are installable:
      [no choices] 
  • unknown
  • unknown
14 Oct 2025 06:19
Replied by unknown on topic LinuxCNC on Raspberry Pi 5

LinuxCNC on Raspberry Pi 5

Category: Installing LinuxCNC

D'oh

really got to stop trying to use forum on my phone.
  • Ul
  • Ul
13 Oct 2025 18:22 - 13 Oct 2025 18:36
Replied by Ul on topic Tipps für aktuelle LinuxCNC Hardware gesucht

Tipps für aktuelle LinuxCNC Hardware gesucht

Category: Deutsch

Habe ich das mit der Konfig der mesa Karten richtig verstanden, dass ich zuerst herausfinden muss wieviele Ein- und Ausgänge ich brauche um dann die passende Konfig auf die Karte zu spielen?

Installiere linuxcnc auf den Raspberry und starte einfach pncconf, dann kannst du dir die Mesakarte aussuchen und siehst selber was man braucht.
Du brauchst die Steigung deiner Spindeln (der Hersteller gibt 0.00375mm/schritt an, also vermutlich 1.5 oder 3 mm).
In pncconf werden Takt/Richtung für die Achsen fix vergeben sein, du musst den Pins nur korrekte Achsen zuordnen. Dann noch angeben an welchen Pins welche Endschalter hängen und das war eigentlich schon alles. Also praktisch nur von deiner HAL-Datei abschreiben.
Oder du schaust hier:  linuxcnc.org/docs/html/config/pncconf.html
  • Ul
  • Ul
12 Oct 2025 21:31
Replied by Ul on topic Tipps für aktuelle LinuxCNC Hardware gesucht

Tipps für aktuelle LinuxCNC Hardware gesucht

Category: Deutsch

Was braucht so eine Karte an Stromversorgung? Die 24V werden doch nur benötigt wenn die Stepper (+Treiber) da direkt
draufhängen, oder?
 

5V. Die Treiber haben eine eigene getrennte Versorgung, die du ja schon hast. Wenn die Maschine per DB25 Kabel am Parallelport betrieben wurde, hat deine Maschine auch ein BOB, um den Parallelport zu schützen.
Das gezeigte BOB aus China ist nicht nur völlig nutzlos und überflüssig, sondern würde bei Direktverbindung die GPIO-Pins des Raspberrys ausknipsen, da die nicht 5V-tolerant sind. Das "Parallel Hat" von byte2bot hat deswegen vier Pegelwandler von 3.3V auf 5V und umgekehrt verbaut. Wenn man auf die verzichtet und die Maschine direkt am Raspberry betreibt, muss man die Eingangssignale auf 3.3V bringen.
Weiters muss man die Eingangspins gegen negative Spannungen schützen, indem man zumindest jeweils einen Vorwiderstand in Serie schaltet, am Besten in Verbindung mit einer Schottky-Diode mit möglichst kleinem Spannungsabfall (1N5817 oder so). Die Raspberry GPIO-Pins haben integrierte Schutzdioden, die laut meiner kurzer Recherche nur 1mA vertragen.

Die Chinesen scheinen bei deren Karten den falschen Busschalter verbaut zu haben: CBT16211A statt CBT16211. Laut Datenblatt ist das ein reiner Schalter ohne Pegelwandelfunktion, müsste also entweder gegen welche ohne A getauscht werden, oder die Pins dürfen nicht mehr als 3.3V sehen. Die chinesische 7I92 hat Vorwiderstände an den Pins, vermutlich weil den Chinesen beim ersten Test die FPGA-Pins wegen zu hoher Eingangsspannung gestorben sind. Falls die Widerstände 220Ohm haben, weiß ich woher sie die Idee haben 
File Attachment:

Die Widerstände werden aber vermutlich zu klein sein, um die Maschine da einfach direkt anzuschließen.

Die Mesakarten laufen über TCP/IP. Die Adressen sollten fix sein. Man kann die Adresse der Karte per Jumper von 10.10.10.10 auf 192.168.1.121 oder so umschalten können. 

Da deine Maschine noch läuft, musst du die Pinbelegung eh im Computer haben. Ansonsten im Schaltplan oder in der Gebrauchsanweisung nachzulesen. Falls die nicht mehr vorhanden sind, einfach an den Kundendienst wenden. 
Wir können aber auch im Forum demokratisch abstimmen welche Pinbelegung deine Maschine hat.
File Attachment:
 
  • unknown
  • unknown
12 Oct 2025 10:52
Replied by unknown on topic Probleme WIFI Rasperry Pi5 mit 2.9.6

Probleme WIFI Rasperry Pi5 mit 2.9.6

Category: Deutsch

Index for known RPi issues& solutions.

forum.linuxcnc.org/38-general-linuxcnc-q...official-images-only

On board Rpi Wifi does work, version of installed Linuxcnc does not matter, if you used the official images.

Any USB Dongle that works with Debian will work as the image is soley based on Debian with Linuxcnc installed and some stuff from the Official RPi github, kernel sources and so on.

Sorry I can only speak English.
  • unknown
  • unknown
12 Oct 2025 03:37
Replied by unknown on topic fixing "raspi firmware" errors on the official amd64 ISO

fixing "raspi firmware" errors on the official amd64 ISO

Category: Installing LinuxCNC

This is kind of preplexing, shouldn't the architecture be arm or similar
Package: raspi-firmware
Architecture: all
Version: 1.20220830+ds-1
Priority: optional
Section: non-free-firmware/misc
Maintainer: pkg-raspi <pkg-raspi-maintainers@lists.alioth.debian.org>
Installed-Size: 22281
Pre-Depends: dpkg (>= 1.17.14)
Depends: dosfstools
Suggests: firmware-brcm80211, firmware-misc-nonfree, bluez-firmware
Breaks: linux-firmware-raspi3 (<< 1.20161123-2), raspi3-firmware (<< 1.20190718-1~)
Replaces: linux-firmware-raspi3 (<< 1.20161123-2), raspi3-firmware (<< 1.20190718-1~)
Filename: pool/non-free-firmware/r/raspi-firmware/raspi-firmware_1.20220830+ds-1_all.deb
Size: 4815784
MD5sum: 02766adeeeea1246010c8a3c2851a73b
SHA1: f37dba3e827325667381703815ac227ee1aa9b64
SHA256: 0094ced47a7fbb6a220ff83e7b43aa637a5d8f6802461e2e4e474597fb796f62
SHA512: 2ef6547b160b9207ce6bdf33572a4eed389c56db0b7172e049c5bf4c8471ee60f7fd5f05fd8bf08075ec4e8baae8a602e219b5592a854ed3e6678222a989a2d7
Homepage: https://github.com/raspberrypi/firmware
Description: Raspberry Pi family GPU firmware and bootloaders
 This package contains all the proprietary files necessary to boot a
 Raspberry Pi board. This should work with all models in the 0, 1, 2, 3 and
 4 families.
 .
 Raspberry Pi is a trademark of the Raspberry Pi Foundation.
  • unknown
  • unknown
11 Oct 2025 21:45
Replied by unknown on topic LinuxCNC on Raspberry Pi 5

LinuxCNC on Raspberry Pi 5

Category: Installing LinuxCNC

First of all I really want to say thanks for all the work you've put into your projects, you really deserve a couple of beers, if that's your poison ;) or a least a good coffee, damn mate whatever you like to drink. Honestly thanks.
Haven't had a chance to use it or try it out but it looks great. One of the things that has been missing for the RPi IMHO, would be great to see in the mainline Linuxcnc tree.
Would be great if you could add this to the RPi "mega thread" and I'll add a link in the index.

Now a request for an extra feature, any chance for ADC support. Would be great for things that a user wants or needs an analogue input.
  • meister
  • meister
11 Oct 2025 17:54
Replied by meister on topic LinuxCNC on Raspberry Pi 5

LinuxCNC on Raspberry Pi 5

Category: Installing LinuxCNC

i build a new component to use the I2C port on the RPI4/5 for extra Digital-IO's and ADC's
can be used standalone, no rio needed: github.com/multigcs/riocore/blob/dev/rio...ins/rpii2c/rpii2c.py
  • meister
  • meister
11 Oct 2025 17:44
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Category: Computers and Hardware

That makes it easier to imagine :)



It should now also be possible to mix FPGA and RPI/Parport configurations.

Oh, there's a new I2C plugin for the Raspberry with pcf8574 and ads1115 support (digital IO + analog inputs / non-real-time).
  • Dragan
  • Dragan
10 Oct 2025 20:37
Replied by Dragan on topic NEW BUILD, need help with e-stop in tklinuxcnc

NEW BUILD, need help with e-stop in tklinuxcnc

Category: Basic Configuration

c@raspberrypi:~/linuxcnc/configs/microcarve$ LINUXCNC - 2.9.6
Machine configuration directory is '/home/cnc/linuxcnc/configs/microcarve'
Machine configuration file is 'microcarve.ini'
Starting LinuxCNC...
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Note: Using POSIX realtime
Found file(REL): ./microcarve.hal
task: main loop took 0.100768 seconds
task: main loop took 0.113741 seconds
task: main loop took 0.140260 seconds



this is what i get running it from commandline. task: main loop ........
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