On 2/19/26 04:40, rodw wrote:
Rod Webster
>Your image you made me for my rpi4b is working fine almost as is, but
>count me in as interested. I contribute monthly to the armbian project
>but haven't established a good conversation just yet.
Gene, sorry but I won't be heading that way! I did give Armbian a good go a
few years ago but the board I chose just wasn't good enough for Linuxcnc.
Sorry to hear that. I'm having great luck with the bananapi-m5, both to
run klipper on my 3d printers, and to build a backup server in a 5 drive
cage, with printed drive shelves holding the pi clone and drives. its
similar to an rpi4b but all usb ports are usb3.1's. I have two 7 port
hubs glued to the side of the drive cage, and 5 ea 4T SSD's in a
software raid6 config for an 11.1Tb raid6. Two hubs cuz one shuts down
with a 5 amp write load. Backup itself is done via rsync covering only
/home/user of itself and 8 other machines here.
Running armbian, it can backup about 90G of my home network in under an
hour. 13" Monitor power draw is about 7 or 8 watts, the rest idles on
14 watts, hitting 19 in the middle of a backup run, all according to one
of my kill-a-watts. And I did it just to see if I could. And at 91 yo
& unvaxxed, connect the dots. Diabetes or my prostate will write my
~30~ eventually. but I'm still here, collecting my SS. I thank you
every time I power up that lathe.
I do wonder if there is a viable case to adopt EVL .Recently I decided to build a small machine and I had a 15 year old PC which thought was old enough to have a parallel port but it didn't. I considered buying a card and a BOB, and also even a Chinese clone of the 7i92 But in the end, I bought a single 4 axis Lichuan ethercat drive for about $90 USD. Its hard to argue with that price!
But now Robert has suggested making room for a new trajectory planner might redefine the thought process.
Rod Webster
On 2026-02-19 18:11, Robert Schöftner <[email protected]> wrote:
Am Mittwoch, dem 18.02.2026 um 13:01 -0600 schrieb Bari:
Since RTAI has reached the end of its life the way forward might be
Xenomai 4 https://evlproject.org/overview/
How many users might find this useful? it will be lots of work and we
aren't sure yet how to support Mesa cards with it yet.
According to https://evlproject.org/core/user-api/thread/index.html it
doesn't seem to require realtime stuff running in kernel space. Even
networking seems to be possible
https://evlproject.org/core/user-api/net/index.html
RTAI really is a different kingdom than userspace. Getting rid of
kernel space code (RTAI) while keeping support for both userspace
realtime systems (rt preempt, xenomai/libevl) should allow massive
simplifications in code and avoid additional "split horizons" in new
developments like the new trajectory planner that will need parts to
think longer than is comfortable/possible in the rt domain.
--
Robert Schöftner <[email protected]>
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Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Don't poison our oceans, interdict drugs at the src.
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