Category: Installing LinuxCNC
Debian includes a RT kernel for the Pi 4b and it is possible to get a working RT linuxcnc install using the Debian images. But the RT kernel was not installed as a dependency from linuxcnc-uspace and needed installing separately with something like sudo apt install linux-image-rt-$uname -r) (might not have that correct. The only catch is that the images only install a text terminal with a root user. You needed to add a user, add sudo rights and then install xfce to get a working system ut it is quite doable. Sadly it does not appear support continued to the pi5.
