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I run LinuxCNC on a Raspberry Pi 4, and it works wonders. LinuxCNC is installed with a realtime Linux kernel; it'll run just as realtime as DOS.

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I tried as well but found no guides to build a RPi4 LinuxCNC machine with realtime. Can you point me to some tutorial or ready SD card image?

I'll go through my saved links tonight. I remember it was a bit of a cludgy operation, like all things new+Linux, but after I got everything setup it all worked as expected.

I think this forum post pointed me in the right direction: https://www.forum.linuxcnc.org/18-computer/36879-raspberry-p...

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