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unknown wrote:

As of Feb 4th 2025 the the 6.12.xx series kernel is not supported by Ethercat, so installation will fail. 

Only installation of Ethercat will fail. I have raised an issue with etherlabmaster on their gitlab repo asking if they have a time line for 6.12 support.
I alos pointed out they should get their finger out as Debian Trixie is only a few months away and it is currently running 6.12

As of Feb 4th 2025 the the 6.12.xx series kernel is not supported by Ethercat, so installation will fail. Those wanting Ethercat are encouraged to use the previous version. This is one of the pitfalls of creating images, if a older kernel is used people get upset, if a newer kernel is used people get upset. Eevn if we had of used the Rpi kernel that is "current", 6.6.x series, Ethercat would have the same issue.

Rodw is on to it and has raised the issue on the github repo.

www.linuxcnc.org/iso/rpi-4-debian-bookwo...23-11-17-1731.img.xz
www.linuxcnc.org/iso/rpi-5-debian-bookwo...23-11-17-1520.img.xz

"Does not work" is useless without further information. We do not read minds, I at least don't like playing 1000 questions.

If you have issues writing the image to an SD card, try extracting the image from the downloaded file (don't ask me I don't use windows), as the file is compressed to save space and time downloading, then try writing the image. If that fails check the sha256 sum. Tho if the file is corrupt extracting file will likely fail anyway. So check it first.
www.linuxcnc.org/iso/

There is a small patch to allwow the kernel to make a sysfs entry that Linuxcnc and some other programs use to determine if the kernel is a realtime kernel.

forum.linuxcnc.org/media/kunena/attachme...ernel-realtime.patch

forum.linuxcnc.org/38-general-linuxcnc-q...6-12?start=10#315437

@ elovalvo Thanks for your work on this. I am trying to stay within RPI OS and compiling my own kernel. Can you tell me why I still have to patch the kernel, even though RT_PREEMPT is supposed to be a part of the mainstream kernel now? I am using the latest 6.6.74.

>Len

Desiccant sounds good at first, but these do "fill up" quickly. I have dozens of these bags in a 3D printer filament storage container. Even though it is completely sealed (with a gasket), all those bags are only good for about a year. Then they all must be baked at 110degC for 8-12h to rejuvenate them; moisture is insidious.

If you try this, place a quality hygrometer inside. Will likely find that the humidity stays low for only a month or so, even with a good seal.

The moisture alone probably is not causing the inability to start. The way most computers and power supplies are designed, just is not favorable to low temperatures. Very few are, because that is not a typical use case for a computer. Section 5.6 of the RaspberryPi4B says that is good down to 0degC - but then must consider whatever power supply is used for it. The characteristics of semiconducting materials changes as temperature changes, so functionality at low temps has to be something designed into it. Once had a quirky home computer that "complained" at 19degC and refused to run at 18.

If it were my machine, I'd put a heater (like a hair dryer on low setting) near the computer, along with a thermostat. Set the thermostat to say 20degC, and just let it warm up until the thermostat starts cycling. Of course need to be careful nothing can get too hot. Warming should take an hour or more - rushing it is not advised; the whole computer needs to warm up slowly. Then run the machine. That may be easier than re-engineering a quirky power supply or replacing the computer.  Unless anyone knows of an industrial-rated computer (and power supply.)  

I want to connect my spindle to a 5 Axis Breakout Board Interface Adapter via a raspberry pi5. I can control the stepper motors (XYZ). I just can't control the spindle. Is there an example for the HAL file?

If I bypass the relay contact. Then the spindle will rotate to the maximum. If I press the + button it slows down. When I press the - button it speeds up. When I press the stop button, it starts running at maximum speed. 
Anyone have a solution?

Greetings Philip