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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

Cant wrote:

Pinium it

Done.
Thank you.

You know, that's not really helpful at all. Why is it no one wants to give any info that may help others diagnose a problem ? It's like pulling teeth, some kind of demented game.

Thank you! Have you tried to install ethercat on these images? I can't get it to work. However on a older image (with older kernel) you have posted it works without issue.

Pinium it

Should we nail it ...hmmm pin it ?
And adding the download link would be good.
Thank you.

First lets talk about the images.
1: They are based on Debian repos built by a collection of custom scripts.
2: Whilst some images have been written to SD card via RPi Imager Balena Etcher is recommended.
2a: If you use Linux there are plenty of other tools, Ubuntu\Mint has USB Image writer.
3: If you use the RPi Imager any adding of user or wifi info does not work. As the image is a custom one, only the kernel is built from RPi Sources.
4: If you are using an Rpi5 & a 7c80 0r 7c81 the driver to be loaded is hm2_spix
5: If you are using an RPi4 & a 7c80 or 7c81 the driver to be loaded is hm2_rpsipi
6: The images now have the SPI interface enabled by default.
7: Location of config.txt  /boot/broadcom/config.txt once again this is a custom build.
8: raspi-config is not in the image, the tool to use is menuconfig.
9: The default username is cnc.
10: The default password is cnc.
11: The images are not meant to be a fully fledged daily driver Operating System, the are just enough to run Linuxcnc.

Links to images:
www.linuxcnc.org/iso/rpi-5-debian-bookwo...25-01-27-0140.img.xz
www.linuxcnc.org/iso/rpi-5-debian-bookwo...7-0140.img.xz.sha256

www.linuxcnc.org/iso/rpi-4-debian-bookwo...23-11-17-1731.img.xz
www.linuxcnc.org/iso/rpi-4-debian-bookwo...7-0404.img.xz.sha256

Hi! I've tried to install ethercat to the latest RPi5 image, however it does not work, seems to be some kind of kernel mismatch. I've managed to install it and get it working with cornholio's image found here (forum.linuxcnc.org/9-installing-linuxcnc...berry-pi-5?start=310). Any idea what might be the issue? Since I'm doing a fresh install I kind of want to install the latest :) Thanks!