The bottleneck with CNC machines is not Linuxcnc, it's the mechanical
hardware and materials. All modern CNC machines may easily be controlled
by LinuxCNC on older hardware. What we really need is new tech and
materials that are cost effective to use to make end products and be
machine faster and easier.
An armchair project manager like yourself could easily spend some time
learning about physics, mechanical engineering and materials science to
provide us with your "insight" to accomplish this.
On 4/19/20 7:25 PM, Rafael Skodlar wrote:
I see this tread circling around the same issue as the one after I
posted my comments on this subject matter when I was exploring
possible options for new CNC machine.
On 2020-04-19 10:12, René Hopf via Emc-users wrote:
Hi,
For reasons I dont understand, many people prefer to use extremely
legacy
hardware to run linuxcnc.
the hardware list in the wiki is extremely outdated, and there is no
real
recommendation on what to buy currently.
Tell me about it. Threads in the past few months will tell you how
much beating I was taking for bringing up related annoying issue with
need for testing motherboards for suitability with RT kernel, etc.
just for fun I tried to run it on modern hardware, and it worked really
well.
I used a Pentium Gold G5400 on a rog strix h370 mainboard(dual
ethernet),
booting from nvme.
64 bit, and efi boot, you cant legacy boot from nvme.
I tried the 4.19 and 5.4.19 rt preempt kernel from the debian repo.
both get extremely good latency of 1500-10000 ns, depending on bios
settings and kernel args.
but even the defaults are fine.
I tried on a few other non-legacy PCs, and could not find a single
one that
doesnt work well with rt preempt.
That's great. Trouble is not everybody can afford or have means to
test different platforms these days when you need to buy most of this
stuff from the Internet.
HW architecture needs to be taken into consideration in any case. What
good is it to run LinuxCNC on multi-CPU and multi-core boards when
only a fraction of it is actually used for CNC functionality?
Mix of GUI and RT on the same SBC is just not a good idea. Yet, some
will argue about it again and again.
Those who want to use old junk just use old junk. I'm sure that this
kind of messages or threads turn potential manufacturers, small or
large (?), away from LinuxCNC.
imho rt preempt is the future, as it is maintained, and you can get
modern
kernels with it.
just trying to kill the rumor that linuxcnc doesnt work on new PCs.
Rene
Thanks,
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