30, 2008 10:05 PM
Subject: Re: [Emc-users] Parallel port in the future - query
John Kasunich wrote:
This subject seems to come up every month or two. The answer is and
will probably always be the same.
Yes, it is possible to make a box that lives outside the PC and can
queue up enough
Jon Elson wrote:
Dave Caroline wrote:
The amount of data one could put in a USB microframe, may allow for
more loops per frame so make it easier
I can see some ways that one could export the software step generation
to a USB parallel port.
Umm, I obviously didn't say what I
I have a feeling if we learn enough about USB2 a fixed bi directional
micro frame protocol could be deterministic for EMC
I need a second and third read of the spec
Dave Caroline
-
This SF.Net email is sponsored by the Moblin
tomp wrote:
maybe this is of interest
RT-Firewire on Linux, using Xenomai (RTAI )
used for robotics, for realtime control of positioning systems
it also enables RTnet over firewire
several nice papers at http://www.rtfirewire.org
Practically all PCs have USB and Ethernet. The hardware
I think some of us need to pick up and even help or fork those dead
projects and see where we can go
Dave Caroline
-
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based
I was just reading SERVO, and a guy is using one of the PicoITX boards.
Low power consumption, small, and could do well, but I would like a board
with 3 or 4 parallel ports available, even using a 'plug in board'.
That would give
all the expansion I could ever think of. But building a parallel
On Fri, 2008-10-31 at 17:57 +, Dave Caroline wrote:
I have a feeling if we learn enough about USB2 a fixed bi directional
micro frame protocol could be deterministic for EMC
I need a second and third read of the spec
Dave Caroline
Wasn't there some talk, last year, about real-time
Jon Elson wrote:
tomp wrote:
maybe this is of interest
RT-Firewire on Linux, using Xenomai (RTAI )
used for robotics, for realtime control of positioning systems
it also enables RTnet over firewire
several nice papers at http://www.rtfirewire.org
Practically all PCs have USB
On Thu, 2008-10-30 at 20:30 -0500, Jim Coleman wrote:
alan, have you considered replacing the fan? this seems like the cheapest
solution to me :-D and you could probably find a complete heatsink with fan
for your laptop on ebay, people part out laptops alot on there.
I took it to a local
On Thu, 2008-10-30 at 08:00 -0500, Jeff Epler wrote:
It can go to pci and post-pci internal busses using intelligent cards
like the mesa 5i20. (this is the path I personally favor)
I'm kind of hoping for pci express over cable:
http://www.onestopsystems.com/pcie_over_cable.html
On Fri, 31 Oct 2008, Matt Shaver wrote:
Date: Fri, 31 Oct 2008 14:39:47 -0400
From: Matt Shaver [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Parallel port in the future - query
On Thu, 2008-10-30 at 08:00 -0500, Jeff Epler
Kirk Wallace wrote:
On Fri, 2008-10-31 at 17:57 +, Dave Caroline wrote:
I have a feeling if we learn enough about USB2 a fixed bi directional
micro frame protocol could be deterministic for EMC
I need a second and third read of the spec
Dave Caroline
Wasn't there some talk,
Kirk Wallace wrote:
Wasn't there some talk, last year, about real-time Ethernet? Ethernet,
to my uneducated brain, seems much more appealing than USB.
Jan Kiszka did this for RT Linux (its called rtnet), and it is
apparently a complete project, and is being maintained.
BUT, the slave side
tomp wrote:
i dont think firewire card is rare or expensive
siig syba other mfctrs
tiger direct 20$
mirco center 20$
newegg 12.99$
so not rare
and not expensive
more important, it already works realtime linux rtai for motion control
OK, they have REALLY come down, I haven't looked
alan wrote:
On Thu, 2008-10-30 at 20:30 -0500, Jim Coleman wrote:
alan, have you considered replacing the fan? this seems like the cheapest
solution to me :-D and you could probably find a complete heatsink with fan
for your laptop on ebay, people part out laptops alot on there.
I
The fan on my laptop quit the other day so I started looking around for
a replacement computer. Looking on the Ebuyer website here in the UK it
seems that most new laptops (especially the smaller ones) now only have
usb outputs. There is a wonderful little acer computer just released
very small,
On Thu, Oct 30, 2008 at 12:34:36PM +, alan wrote:
So really my query is also about the future. Where will emc go if
parallel ports become a thing of the past?
It can go to systems that still have parallel ports, even after they
become unusual in new consumer PCs.
It can go to systems where
On Thu, Oct 30, 2008 at 08:00, Jeff Epler [EMAIL PROTECTED] wrote:
On Thu, Oct 30, 2008 at 12:34:36PM +, alan wrote:
So really my query is also about the future. Where will emc go if
parallel ports become a thing of the past?
It can go to systems that still have parallel ports, even after
As others have said, laptops have issues. Dumpster diving and using
discards from offices is
probably the cheapest way to support this habit :)
Eventually, I see EMC2 going to a 'client server' model, taking the real
time portion and putting
it in an external controller, like a pc/104 or even
On Thu, Oct 30, 2008 at 02:10:59PM +, alan wrote:
I have built an ornamental turning lathe with stepper control, on a
moveable stand and I am really looking for something that sits on a
narrow shelf under the lathe next to my stepper controller box. So I am
looking for a eorocard or
If you get a little brave, design a smaller case that is more
appropriate. Wood is good!
Put a good fan or two in it with filters, and keep a 'positive pressure'
in the case. This will
keep much of the dust/dirt/chips out.
Story warning
In the OLD days before the IBM PC was a dream in Boca
Jack Coats wrote:
If you get a little brave, design a smaller case that is more
appropriate. Wood is good!
Put a good fan or two in it with filters, and keep a 'positive pressure'
in the case. This will
keep much of the dust/dirt/chips out.
Personally I wouldn't go for wood - metal
fan alan wrote:
The fan on my laptop quit the other day so I started looking around for
a replacement computer. Looking on the Ebuyer website here in the UK it
seems that most new laptops (especially the smaller ones) now only have
usb outputs. There is a wonderful little acer computer just
Jeff Epler wrote:
On Thu, Oct 30, 2008 at 12:34:36PM +, alan wrote:
So really my query is also about the future. Where will emc go if
parallel ports become a thing of the past?
snip
It can go into embedded systems that are as powerful as today's desktop
PCs, but with appropriate I/O
alan wrote:
So any suggestions for a cheap replacement computer. What is the
smallest, cheapest desktop or laptop with a parallel port? I thought
about using a pc/104 card but again here in the UK they seem to be quite
expensive? Has anyone got experience using pc/104 ?
Stuart Stevenson
BUT, USB is a shared resource. Up to 127 devices can be on the bus and
there is no guarantee of timed delivery.
You could identify the device a as a video interface and the USB bus would
allocate specific bandwidth to an interface.
Making a USB based IO EMC2 hardware controller would be the way
Guess it would do well for me to sign my message!
BUT, USB is a shared resource. Up to 127 devices can be on the bus and
there is no guarantee of timed delivery.
You could identify the device a as a video interface and the USB bus would
allocate specific bandwidth to an interface.
Making a USB
Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Thursday, October 30, 2008 11:04 AM
Subject: Re: [Emc-users] Parallel port in the future - query
Guess it would do well for me to sign my message!
BUT, USB is a shared resource. Up to 127 devices can be on the bus
John Harris wrote:
Hi Jim,
I'm very interested in your proposed project, of moving the
'Real Time' out of the box and into a USB replacement for the parallel port
breakout board.
I design motorized microscope XY stages and focus knob drives for Z, with a
3-axis controller
Jim Combs wrote:
BUT, USB is a shared resource. Up to 127 devices can be on the bus and
there is no guarantee of timed delivery.
You could identify the device a as a video interface and the USB bus would
allocate specific bandwidth to an interface.
Making a USB based IO EMC2 hardware
Dave Caroline wrote:
The amount of data one could put in a USB microframe, may allow for
more loops per frame so make it easier
I can see some ways that one could export the software step generation
to a USB parallel port. Both the FTDI2232 and the Cypress 7C68013
(EZ-USB FX2 chip) can
John Kasunich wrote:
This subject seems to come up every month or two. The answer is and
will probably always be the same.
Yes, it is possible to make a box that lives outside the PC and can
queue up enough motion in advance that it doesn't require realtime
performance from the PC.
Jon,
Jon Elson wrote:
John Kasunich wrote:
This subject seems to come up every month or two. The answer is and
will probably always be the same.
Yes, it is possible to make a box that lives outside the PC and can
queue up enough motion in advance that it doesn't require realtime
33 matches
Mail list logo
