On 05/21/2012 09:15 AM, Jon Elson wrote:
Rafael Skodlar wrote:
On 05/20/2012 12:12 PM, Dave wrote:
On 5/20/2012 12:40 PM, Rafael Skodlar wrote:
I wonder what kind of power and data cables would you recommend for use
in X-Y-Z CNC about 1.2mx1m size? Besides power, it's not clear to me how
On Mon, 21 May 2012 18:04:53 -0700 (PDT), you wrote:
I never use the H-number, it is only useful for applying the offset of
It may be not useful in LinuxCNC but I guarentee you 90% + of the mill
programs in the world use it (Fanuc has to have it) also the Dxx
If you omit the D on Fanuc no offset
On 22 May 2012 02:04, Terry Christophersen tcninj...@yahoo.com wrote:
I never use the H-number, it is only useful for applying the offset of
It may be not useful in LinuxCNC but I guarentee you 90% + of the mill
programs in the world use it
Well, yes, but we are using LinuxCNC.
--
atp
If you
On 22 May 2012 07:53, Rafael Skodlar ra...@linwin.com wrote:
Using Cat-5 was a surprise to me as it's a bit stiff unless each wire is
made of even smaller wires, not common in general use.
There is solid stranded for fixed installation and stranded for patch cables.
On 05/21/2012 04:40 PM, dave wrote:
On Mon, 21 May 2012 14:27:06 -0400
N. Christopher Perryn_christopher_pe...@me.com wrote:
When money is no object I love the toolchanger!
N. Christopher Perry
On May 21, 2012, at 13:24, Roland Jollivet
roland.jolli...@gmail.com wrote:
On Tuesday, May 22, 2012 05:25:01 AM Rafael Skodlar did opine:
On 05/21/2012 09:15 AM, Jon Elson wrote:
Rafael Skodlar wrote:
On 05/20/2012 12:12 PM, Dave wrote:
On 5/20/2012 12:40 PM, Rafael Skodlar wrote:
I wonder what kind of power and data cables would you recommend for
use in
On Tuesday, May 22, 2012 05:38:32 AM andy pugh did opine:
On 22 May 2012 02:04, Terry Christophersen tcninj...@yahoo.com wrote:
I never use the H-number, it is only useful for applying the offset of
It may be not useful in LinuxCNC but I guarentee you 90% + of the mill
programs in the
On Tue, May 22, 2012 at 10:36 AM, Mark Wendt mark.we...@nrl.navy.mil wrote:
On 05/21/2012 04:40 PM, dave wrote:
On Mon, 21 May 2012 14:27:06 -0400
N. Christopher Perryn_christopher_pe...@me.com wrote:
When money is no object I love the toolchanger!
N. Christopher Perry
On May 21,
On 05/22/2012 06:23 AM, Dave Caroline wrote:
On Tue, May 22, 2012 at 10:36 AM, Mark Wendtmark.we...@nrl.navy.mil wrote:
On 05/21/2012 04:40 PM, dave wrote:
On Mon, 21 May 2012 14:27:06 -0400
N. Christopher Perryn_christopher_pe...@me.comwrote:
When money is no
Why does it matter how other controls work?
John
On 5/21/2012 8:04 PM, Terry Christophersen wrote:
I never use the H-number, it is only useful for applying the offset of
It may be not useful in LinuxCNC but I guarentee you 90% + of the mill
programs in the world use it (Fanuc has to have it)
On Tuesday, May 22, 2012 07:31:28 AM Mark Wendt did opine:
On 05/22/2012 06:23 AM, Dave Caroline wrote:
On Tue, May 22, 2012 at 10:36 AM, Mark Wendtmark.we...@nrl.navy.mil
wrote:
On 05/21/2012 04:40 PM, dave wrote:
On Mon, 21 May 2012 14:27:06 -0400
N. Christopher
the h number is also useful for code that is explicit. implicit and default
treatments are the typical haunts of misbehavior and error.
application of ambiguity to machine control command articles may be some kind
of requirement for thinking machines. automating a defined, standardized
On Tuesday, May 22, 2012 07:39:37 AM John Thornton did opine:
Why does it matter how other controls work?
John
So you don't have to totally retrain a new hire?
Cheers, Gene
--
There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order.
On 05/22/2012 07:38 AM, gene heskett wrote:
I'd give my left you-know-what for a shop that size.
Left? Heck, I'd offer both, I've been disarmed for 40 years, and diabetes
has fixed the other so they aren't doing me any good.
I'd hang a name on my shed, but there's not enough flat
2012/5/22 John Thornton bjt...@gmail.com:
Why does it matter how other controls work?
Not to reinvent the wheel and learn from existing examples of good
solutions to some problems.
--
Viesturs
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
On 22 May 2012 11:30, Mark Wendt mark.we...@nrl.navy.mil wrote:
I'd give my left you-know-what for a shop that size.
It would be difficult to keep warm enough to work in.
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
reducing the rtfm overhead would be a nice break also.
--- On Tue, 5/22/12, gene heskett ghesk...@wdtv.com wrote:
From: gene heskett ghesk...@wdtv.com
Subject: Re: [Emc-users] Tool Offsets
To: emc-users@lists.sourceforge.net
Date: Tuesday, May 22, 2012, 4:40 AM
On Tuesday, May 22, 2012
On Tuesday, May 22, 2012 07:55:32 AM Mark Wendt did opine:
On 05/22/2012 07:38 AM, gene heskett wrote:
I'd give my left you-know-what for a shop that size.
Left? Heck, I'd offer both, I've been disarmed for 40 years, and
diabetes has fixed the other so they aren't doing me any good.
On 05/22/2012 07:52 AM, andy pugh wrote:
On 22 May 2012 11:30, Mark Wendtmark.we...@nrl.navy.mil wrote:
I'd give my left you-know-what for a shop that size.
It would be difficult to keep warm enough to work in.
I think I might manage to find a way. ;-)
Mark
On 05/22/2012 07:56 AM, gene heskett wrote:
Cheers, Gene
Gene,
The left was just the starting point for negotiations. You never
wanna give away to much at the start.
Mark
Chuckle. A momentary lapse of memory is all I can plead though. :)
Cheers, Gene
You're
On Tuesday, May 22, 2012 07:57:20 AM andy pugh did opine:
On 22 May 2012 11:30, Mark Wendt mark.we...@nrl.navy.mil wrote:
I'd give my left you-know-what for a shop that size.
It would be difficult to keep warm enough to work in.
Which is why I do woodwork in the garage, its better
Terry,
I am strongly suspecting that it has something to do with named external
subroutines. I have used coordinate systems (G54-59, G10 L2, etc.)
extensively in the past without any problems. This is the first time I have
used the tool table for X, Y, etc. offsets, but the problems I am
a whole robot to swap tools: the prelude to an opera of the waking maintenace
nightmare.
--- On Tue, 5/22/12, gene heskett ghesk...@wdtv.com wrote:
From: gene heskett ghesk...@wdtv.com
Subject: Re: [Emc-users] OT : large cnc
To: emc-users@lists.sourceforge.net
Date: Tuesday, May 22, 2012,
On 21 May 2012 20:51, Eric H. Johnson ejohn...@camalytics.com wrote:
Per the Setting Coordinate Systems thread, I converted from using
coordinate systems (G54-G59.3) and setting the offsets with G10 L2, to using
the offsets specified in the tool table. Mostly it worked without a problem.
The
I agree it is good to learn from other control systems but the wheel is
reinvented every day with a better wheel. If not we would still be
driving Model A's in any color you like as long as it is black. I did a
brake job on my van yesterday and the rear calipers were strange and
different than
It can be (and has been) done. You probably will need to keep the
encoders on the motors, unless your ballscrews and the rest of the
drivetrain is very tight and backlash free. The trick is to use the
motor encoders for the P and D parts of the PID loop, for stability,
and use the linear scales
Glass scale is THE solution for really high precision. (this remove ball
screws geometric error, as well as mostly all flexure error).
Unfortunately, it is usually not possible to get a good servo loop with
the linear glass directly, thus an encoder on the motor is still needed
(mostly to have
PID control loops are math function implementations
that assume no discontinuities or delays in the
feedback path, which includes the mechanical parts.
Backlash causes discontinuity and will cause the
PID to over-respond during the backlash interval.
This can be tamed somewhat by reducing gain,
On Tue, 22 May 2012 13:43:33 +
erik.555.gr...@gmail.com wrote:
Are there any major dis-advantages to using glass scales as position
feedback for a servo system versus using encoders directly attached
to the motors. I could see where backlash might be an issue but if
using precision
Rafael Skodlar wrote:
Thank you very much for detailed advice to all of you that responded to
my question. I received enough material to spend a few evenings doing my
homework. It's much easier to start knowing what others have tried and
what works in different circumstances.
Using
On 5/22/2012 12:07 PM, Jon Elson wrote:
Rafael Skodlar wrote:
Thank you very much for detailed advice to all of you that responded to
my question. I received enough material to spend a few evenings doing my
homework. It's much easier to start knowing what others have tried and
what
On 22 May 2012 15:51, John Kasunich jmkasun...@fastmail.fm wrote:
It can be (and has been) done. You probably will need to keep the
encoders on the motors, unless your ballscrews and the rest of the
drivetrain is very tight and backlash free. The trick is to use the
motor encoders for the P
Dear Linuxcnc Users,
I've been talking with a gentleman from NASA who worked on the last
version of APT (APT 4 SSX 8) developed with public funding, about
releasing the code for everyone's use and education. After some
searching, a copy of this has been found. This program is written in
Fortran
Hi everyone,
I just ran into Intel DN2800MT mini-ITX motherboard.
http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-board-dn2800mt.html
It has HDMI, LVDS (can be useful for LCD panels), LPT header, two miniPCIe
slots (SSD and wifi if necessary) and built-in PSU!
2012/5/22 Andrew parallel.kinemat...@gmail.com:
Hi everyone,
I just ran into Intel DN2800MT mini-ITX motherboard.
http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-board-dn2800mt.html
It has HDMI, LVDS (can be useful for LCD panels), LPT header, two miniPCIe
On 22 May 2012 15:01, Claude Froidevaux men...@bluewin.ch wrote:
Basically, the concept is to use the motor encoder for high frequency
information (Derivative term of the PID), and the glass scale for the
Integrator term. Things start to get complex for the P term.. it may be
a mix of both,
On Tue, 22 May 2012 18:39:05 +0200
Roland Jollivet roland.jolli...@gmail.com wrote:
On 22 May 2012 15:51, John Kasunich jmkasun...@fastmail.fm wrote:
It can be (and has been) done. You probably will need to keep the
encoders on the motors, unless your ballscrews and the rest of the
On Tue, May 22, 2012 at 07:22:37PM +0100, andy pugh wrote:
It has just occurred to me that it might be possible to combine tacho
and command voltages completely in the analogue domain for these
machines?
Isn't this exactly what velocity mode servo amps do?
On 22 May 2012 19:28, Chris Radek ch...@timeguy.com wrote:
It has just occurred to me that it might be possible to combine tacho
and command voltages completely in the analogue domain for these
machines?
Isn't this exactly what velocity mode servo amps do?
Almost certainly. But I just
On 5/22/2012 1:10 PM, Andrew wrote:
Hi everyone,
I just ran into Intel DN2800MT mini-ITX motherboard.
http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-board-dn2800mt.html
It has HDMI, LVDS (can be useful for LCD panels), LPT header, two miniPCIe
slots (SSD and
With all those big motors and hot chips flying off, keeping it cool might be a
bigger issue!
On 22 May 2012, at 12:52, andy pugh bodge...@gmail.com wrote:
On 22 May 2012 11:30, Mark Wendt mark.we...@nrl.navy.mil wrote:
I'd give my left you-know-what for a shop that size.
It would be
On Tue, May 22, 2012 at 7:07 AM, charles green xxzzb...@yahoo.com wrote:
a whole robot to swap tools: the prelude to an opera of the waking
maintenace nightmare.
Yep, that's right. ... Welcome to the wonderful world of high-$$
machines, where waiting
for the maintenance guy costs more than
On Tuesday, May 22, 2012 04:36:53 PM Jon Elson did opine:
Rafael Skodlar wrote:
Thank you very much for detailed advice to all of you that responded
to my question. I received enough material to spend a few evenings
doing my homework. It's much easier to start knowing what others have
On 22 May 2012 21:33, Jack Coats j...@coats.org wrote:
On Tue, May 22, 2012 at 7:07 AM, charles green xxzzb...@yahoo.com wrote:
a whole robot to swap tools: the prelude to an opera of the waking
maintenace nightmare.
In the video it gets perilously close to smacking an expensive bit of
live
On 5/22/2012 2:43 PM, Dave wrote:
On 5/22/2012 1:10 PM, Andrew wrote:
Hi everyone,
I just ran into Intel DN2800MT mini-ITX motherboard.
http://www.intel.com/content/www/us/en/motherboards/desktop-motherboards/desktop-board-dn2800mt.html
It has HDMI, LVDS (can be useful for LCD panels), LPT
On 22 May 2012 22:17, Kent A. Reed kentallanr...@gmail.com wrote:
While Ubuntu Linux 10.04 can be installed, functionality is limited and
hardware graphics acceleration does not work. Because there are no
drivers for the PowerVR graphics chip, the OS uses the generic VESA
driver for X.org,
On Tue, May 22, 2012 at 5:19 PM, andy pugh bodge...@gmail.com wrote:
Software-OpenGL and Vesa graphics are both common suggestions for
reducing latency problems, so that might actually be a plus for us,
especially if the problems make them very cheap :-)
That's what I was thinking, although
On 5/22/2012 5:19 PM, andy pugh wrote:
On 22 May 2012 22:17, Kent A. Reedkentallanr...@gmail.com wrote:
While Ubuntu Linux 10.04 can be installed, functionality is limited and
hardware graphics acceleration does not work. Because there are no
drivers for the PowerVR graphics chip, the OS
I have a lathe and mill that I bought with Anilam controls, they get
position from the Anilam DRO scales. The servos use tachometer feedback to
the drive and the scales are connected to the control. These are stable
even with backlash, I'm not saying backlash is good, just that the backlash
On 5/22/2012 5:51 PM, Kent A. Reed wrote:
On 5/22/2012 5:19 PM, andy pugh wrote:
On 22 May 2012 22:17, Kent A. Reedkentallanr...@gmail.com wrote:
While Ubuntu Linux 10.04 can be installed, functionality is limited and
hardware graphics acceleration does not work. Because there
On Wed, May 23, 2012 at 1:46 AM, Viesturs Lācis viesturs.la...@gmail.comwrote:
PCIe slot is suitable for 6i25, which is probably very new, it's even not
in MESA's price list, I guess the price is compatible to 5i25's.
Is there a PCIe-to-PCI adapter available?
Anyone tested the latency?
Matt Shaver wrote:
I would also be interested in hearing from any people with experience
in Fortran who would be interested in helping port this code to the
Linux platform. If you could indicate your level of Fortran experience
and any reasons for your interest in this code, that would be
Roland Jollivet wrote:
Does this mean you can use lower resolution encoders on the motor, or
should they be similar?
If you had 1um resolution on the fixed linear scale, what linear resolution
should the rotary encoder yield?
It would probably be best if the rotary encoders had quite a
On Tue, 22 May 2012 21:44:23 -0500
Jon Elson el...@pico-systems.com wrote:
Matt Shaver wrote:
I would also be interested in hearing from any people with
experience in Fortran who would be interested in helping port this
code to the Linux platform. If you could indicate your level of
Yishin-
Do you actually have the Beaglebone running LinuxCNC? I know Jon Elson has been
waiting for a very long time for someone to write an RTAI kernel for that
platform.
+++
We are like tenant farmers chopping down
On Wed, May 23, 2012 at 11:30 AM, Greg Bernard yankeelena2...@yahoo.comwrote:
Yishin-
Do you actually have the Beaglebone running LinuxCNC? I know Jon Elson has
been waiting for a very long time for someone to write an RTAI kernel for
that platform.
Greg,
Yes, we have LinuxCNC running with
On Wed, May 23, 2012 at 3:44 AM, Jon Elson el...@pico-systems.com wrote:
Matt Shaver wrote:
I would also be interested in hearing from any people with experience
in Fortran who would be interested in helping port this code to the
Linux platform. If you could indicate your level of Fortran
Hello,
Just wondering if someone might know why LinuxCNC interprets the G04
dwell command parameter as seconds instead of milliseconds?
I'm fairly certain most other machines (ie Fanuc and others) interpret
the P value as milliseconds.
For example, the command:
G04 P3000
is interpreted by most
On Tue, May 22, 2012 at 8:50 PM, Yishin Li y...@araisrobo.com wrote:
Yes, we have LinuxCNC running with UbuntuLinux 12.04 armhf (hard-floating)
on BeagleBone.
...
Yishin,
That is fantastic! Any chance you will release a public distribution
of your port of LinuxCNC to the BeagleBone (with some
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