well.. I know a lot of us have strong feelings for linuxcnc. For me it is
seeing what it can actually do..
As (I think) Les had said. you can run the smallest desktop machine all
the way up to a machining center with pallets and tool changer.
This is what really sold me. We have the K with
On 2/17/20 5:18 PM, Ed wrote:
On 2/17/20 6:20 PM, John Dammeyer wrote:
From: Sam Sokolik [mailto:samco...@gmail.com]
Because your examples are not running a full operating system...
I don't buy that. That's like saying. Look. The ride is a tad
uncomfortable but that's to be expected.
> I'm sorry, this is degenerating into a useless argument and I'm gonna
> take a step back and leave you to it.
>
> Les
>
Thank you. Your insights have been invaluable.
John
>
>
> ___
> Emc-users mailing list
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>
I don't buy that. That's like saying. Look. The ride is a tad uncomfortable
but that's to be expected. After all this is a 10 Ton gravel truck. But look
at what it can carry. True it's only groceries today and most days but that
one time it will come in so handy... dear...
I'd much
> On 18 Feb 2020, at 6:51 pm, John Dammeyer wrote:
>
> I went to the Grizzly tools site. I think I counted 38 mills. None of them
> CNC.
> KBC tools here in Canada has, in the this month's flier, 5 milling machines
> of various sizes and only one CNC milling machine with Acu-Rite
of non-CNC machines out there is still really
high.
John
> -Original Message-
> From: Jon Elson [mailto:el...@pico-systems.com]
> Sent: February-17-20 8:51 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] RPI4 is pretty close to a decent machine con
On 02/17/2020 11:37 AM, John Dammeyer wrote:
I've been asking on other metal working groups about CNC
and it's really amazing how few CNC installations there
are out there. Many people are happy with a DRO and power
feed on one or two axis.
And, no, you are looking in the wrong places.
On 02/17/2020 11:37 AM, John Dammeyer wrote:
I think that supports my position that LinuxCNC is really
just a middle box between display and motion hardware and
if you want optimal performance you offload the real work
to something that isn't LinuxCNC.
But, that is NOT what my boards do. In
there are still printer port options available if that is what you want..
I have played with 3rd gen i5's (HP 8300 sff)
this is with rt_preempt... I still wouldn't expect much more than 40khz
stepping.. (in my experience)
On 2/17/20 7:51 PM, John Dammeyer wrote:
SNIP
Truthfully, all the Intel type NUC PCs don't have parallel ports and unless you
buy two 7i92H or whatever MESA board you buy there is no guarantee that they
will be there in 20 years either.
> -Original Message-
> From: Ed [mailto:ate...@mwt.net]
> Sent: February-17-20 5:18 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] RPI4 is pretty close to a decent machine control
>
> On 2/17/20 6:20 PM, John Dammeyer wrote:
> >> F
ng [mailto:marshl...@marshland.co.nz]
> > > Sent: February-17-20 2:51 PM
> > > To: emc-users@lists.sourceforge.net
> > > Subject: Re: [Emc-users] RPI4 is pretty close to a decent machine control
> > >
> > > My Rasperberry pi is acting as a database server and wo
On 2/17/20 5:38 PM, John Dammeyer wrote:
Having also controlled a very large XY Laser system with 8085 code you can
understand why I'm puzzled that 1GHz and up 32 ARM computers have so much
trouble.
Recent PC's don't have real time capable GPIO ports tied to pins on the
motherboard. Some
mc-users@lists.sourceforge.net
> > Subject: Re: [Emc-users] RPI4 is pretty close to a decent machine control
> >
> > My Rasperberry pi is acting as a database server and works well. I still
> > marvel at my Southwestern Industries CNC machine that runs on a 8085
> > (5M
> -Original Message-
> From: Marshland Engineering [mailto:marshl...@marshland.co.nz]
> Sent: February-17-20 2:51 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] RPI4 is pretty close to a decent machine control
>
> My Rasperberry pi is acting
My Rasperberry pi is acting as a database server and works well. I still
marvel at my Southwestern Industries CNC machine that runs on a 8085 (5Mhz)
that controls a 3 axis mill at 2m/min with 2000 line encoders and servo
drives. All programming is conversational and tool compensation is done by
> -Original Message-
> From: Les Newell [mailto:les.new...@fastmail.co.uk]
> Sent: February-17-20 11:23 AM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] RPI4 is pretty close to a decent machine control
> solution...
>
>
> > I've done
I've done something similar for a client with a PiZeroW that took 18 seconds to
boot but the logging of CAN messages was required on power up. I ended up
using a PIC32 since it had enough RAM and it also used a SPI interface to
transfer data once the Pi was awake and ready to talk. Even
This is the distinction between a motion controller and interface
hardware. linuxcnc is the motion controller. The external hardware that
interfaces with linuxcnc does what the computer doesn't do well
step generation
pwm
encoder counting
resolver interfacing
other stuff I can't think of
On Monday 17 February 2020 12:01:40 John Dammeyer wrote:
> > From: Les Newell [mailto:les.new...@fastmail.co.uk]
> >
> > > Since very slow PCs with limited memory could do this as well as
> > > the slower
> >
> > PRU processors on the BBB, I'd venture a guess that if a Pi4 can't
> > do at least
But I am perplexed that if LinuxCNC is so modular why MachineKit for
the Beagle was forked rather than maintained as part of LinuxCNC.
The Machinekit team wanted to replace and redesign some of the core
components of LinuxCNC including the framework that enable the modules
to talk to each
Hi Peter,
> >long strings of LinuxOS upgrade knowledge since the for LinuxCNC need a
> >precompiled (for BBB) hostmot2 driver?
> >
> >loadrt hostmot2
> >loadrt hm2_eth board_ip="192.168.1.121" config=" num_encoders=0
> num_pwmgens=0
> >num_stepgens=5"
> >setphm2_7i92.0.watchdog.timeout_ns
Hi Jon,
> On 02/16/2020 06:10 PM, John Dammeyer wrote:
> > Hi Sam,
> > Nice. But it does seem to support my premise on isolating LinuxCNC from
> the hardware control.
> >
> > For example, way back a Pentium 386-66 with WIN-95 and MACH2 CNC was
> able to do this at 25KHz stepping.
> >
> > A
On Mon, 17 Feb 2020, John Dammeyer wrote:
SNIP--
I think partly I don't understand the difference between the current LinuxCNC
and the MachineKit LinuxCNC. What does make them so different that a newer
version of LinuxCNC with bugs
> From: Les Newell [mailto:les.new...@fastmail.co.uk]
> > Since very slow PCs with limited memory could do this as well as the slower
> PRU processors on the BBB, I'd venture a guess that if a Pi4 can't do at least
> 50kHz stepping while also doing trajectory planning and screen updates there
>
On 02/16/2020 06:10 PM, John Dammeyer wrote:
Hi Sam,
Nice. But it does seem to support my premise on isolating LinuxCNC from the
hardware control.
For example, way back a Pentium 386-66 with WIN-95 and MACH2 CNC was able to do
this at 25KHz stepping.
A BeagleBone Black with Machine Kit has
Since very slow PCs with limited memory could do this as well as the slower PRU
processors on the BBB, I'd venture a guess that if a Pi4 can't do at least
50kHz stepping while also doing trajectory planning and screen updates there is
something really 'off' with LinuxCNC.
It depends on
On Sunday 16 February 2020 18:27:24 Sam Sokolik wrote:
> software stepping...
>
> https://www.youtube.com/watch?v=LKjNOVHhHio
>
> Ethernet
>
> https://www.youtube.com/watch?v=2SEB7TuCUR0
>
> I don't have an spi solution to try
>
Works great Sam. I started out with a pi3 driving a 7i90HD,
> On Sun, Feb 16, 2020 at 4:12 PM John Dammeyer
> wrote:
>
> >
> > If I do the math. The RISC processors generally run one instruction per
> > clock cycle and if that's really true there are 20,000 CPU cycles between
> > each step at 50kHz. Coming from the embedded world where I work
> that�s
mmeyer
>
>
> > -Original Message-
> > From: Sam Sokolik [mailto:samco...@gmail.com]
> > Sent: February-16-20 3:27 PM
> > To: Enhanced Machine Controller (EMC)
> > Subject: [Emc-users] RPI4 is pretty close to a decent machine control
> > solution...
> &
gt; > decel for all axis to be able to maintain a specific feed rate in 3 or 4
> > dimensions.
> >
> > I'd say being able to 10kHz stepping and being happy with that might be
> > setting the bar very very low.
> >
> > BTW, I really do enjoy your v
e to 10kHz stepping and being happy with that might be
> setting the bar very very low.
>
> BTW, I really do enjoy your videos.
>
> John Dammeyer
>
>
> > -Original Message-
> > From: Sam Sokolik [mailto:samco...@gmail.com]
> > Sent: Febr
> -Original Message-
> From: Sam Sokolik [mailto:samco...@gmail.com]
> Sent: February-16-20 3:27 PM
> To: Enhanced Machine Controller (EMC)
> Subject: [Emc-users] RPI4 is pretty close to a decent machine control
> solution...
>
> software stepping...
>
> h
software stepping...
https://www.youtube.com/watch?v=LKjNOVHhHio
Ethernet
https://www.youtube.com/watch?v=2SEB7TuCUR0
I don't have an spi solution to try
sam
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