Interesting if you have the time..
But for six bucks and free shipping...
http://www.dealextreme.com/details.dx/sku.6040
- Original Message -
From: Kirk Wallace [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Saturday, February 02, 2008
On Sun, 2008-02-03 at 03:06 -0500, Dean Hedin wrote:
Interesting if you have the time..
But for six bucks and free shipping...
http://www.dealextreme.com/details.dx/sku.6040
Obviously, I didn't look hard enough when went looking for these. Thanks
for the link Dean.
--
Kirk Wallace
HI,
I just rebuilt a PC which had died and I have put both windows XP and
Ububtu on it - its all working fine but I'd like to change the order of
the boot options in the initial startup screen. I installed WinXP first
and then auto installed Ubuntu and so the startup screen has Ubuntu as
the
On Sun, 2008-02-03 at 18:12 +1100, Peter Homann wrote:
Hi Kirk,
A couple of things.
The ModIO I sent you has a RS232-485 converter built in. With this you can
run
a serial cable from the ModIO to the PC, then run additional Modbus devices
from the RS485 terminals on the ModIO. It
On Sunday 03 February 2008, Ian Wright wrote:
HI,
I just rebuilt a PC which had died and I have put both windows XP and
Ububtu on it - its all working fine but I'd like to change the order of
the boot options in the initial startup screen. I installed WinXP first
and then auto installed Ubuntu
Jon,
I'm sorry I wasn't clear I meant why put such an expensive DRO on an old
machine
when a cheaper one will be just as good. I built two of the Shuma Tech DRO's
for
about $250 each including scales and they are accurate to .0005. I'm like you
and
can barely turn the screw just enough to
What I would like to try someday is to connect linear encoders while
still using rotary encoders. For example, if you have linear encoder
resolution of 0.0005, and rotary encoder resolution of perhaps 0.0001,
you could position from your rotary encoders just like normal but update
the
Kirk-
With half duplex EIA-485 timing is very important. Unlike Ethernet, EIA-485
does not support collision detection at the physical layer so collisions
between outgoing data and returning data cause data corruption, since the
trancievers do not back off and retransmit. After a query the
On Sun, 3 Feb 2008, Javid Butler wrote:
Date: Sun, 3 Feb 2008 08:27:42 -0600
From: Javid Butler [EMAIL PROTECTED]
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users]
Jason Cox [EMAIL PROTECTED] writes:
Hi all,
my i386 class emc pc just died :(
as luck would have it, I was given recently an old G4 Mac. is it possible
to run EMC on a ppc32?
any pointers ?
thanks
Jason
-
Since emc 2.2, it's been possible to build sim on a mac. I do this
on mine, but I think mine's a G3, not a G4.
I don't think RTAI works on mac (but I haven't looked hard) so even
aside from hardware driver issues, there's no way to control machinery
with emc/mac.
Maybe ...
https://mail.rtai.org/pipermail/rtai/2004-July/008098.html
G3 and G4's are both ppc's.
Unfortunately the mac mini ( duo or duo2 core) doesn't have
appropriate I/O for emc but it is a nice box
... a stack of CDROM's about 6 high. :-)
Dave
On Feb 3, 2008, at 9:22 AM, Chris Radek
I thought about suggesting full duplex as well, but it involves converting
every node of the network. For one or two nodes it's not bad, but it adds up
quickly. It's not a hard conversion, but would still take time to do more
than a couple of nodes.
Javid
- Original Message -
From:
Hi all,
Now that I have AXIS and EMC2 singing and dancing, I find that I use
three different ini files depending on what hardware I've got on my
minimill. For example, when I have the (horizontal) rotary 4th axis on
there, I have different x,y, and z limits that when it is absent. The
Jason Cox wrote:
Hi all,
my i386 class emc pc just died :(
as luck would have it, I was given recently an old G4 Mac. is it posible
to run EMC on a ppc32?
any pointers ?
Does it have a parallel port? If not, you are in pretty serious
trouble. Not to mention the problems of getting an
On Sunday 03 February 2008 20:31, Jon Elson wrote:
I was given recently an old G4 Mac. is it posible to run EMC on a ppc32?
Does it have a parallel port? If not, you are in pretty serious
trouble.
The right question should be: Does it have any expansion slots that would
allow an IO card to
Kirk
I thank you for the offer for the r485 converter. I think after reading some of
the posts I would rather go with full duplex. Paying you for, and shipping, it
would have been a pain too I think, as I am in Canada.
I came across a web site with a Modbus library that is GPL.
Good advice is never to buy non-isolated converters.
You will replace them regularly if you do.
This does not seem to be isolated.
Kirk Wallace wrote:
On Sun, 2008-02-03 at 03:06 -0500, Dean Hedin wrote:
Interesting if you have the time..
But for six bucks and free shipping...
At 6 bucks a pop, buy 2.
Seriously, I worked with 485 at a previous job and I never blew out a non
isolated converter.
Of course it might depend on what your doing I guess.
- Original Message -
From: [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC)
Sent: Sunday,
Isolation is commonly used to deal with large common mode differentials. While
that can blow a 485 tranciever it does not happen alot unless there are vey
long cable runs or the cable runs between buildings. When running 485 for
distances of a few hundred feet connecting equipment powered off
Chris Radek [EMAIL PROTECTED] writes:
Since emc 2.2, it's been possible to build sim on a mac. I do this
on mine, but I think mine's a G3, not a G4.
Chris,
You are talking about building sim on linux on the mac, not OS X right?
Alan
On Mon, Feb 04, 2008 at 04:18:49AM +, Alan Condit wrote:
Chris,
You are talking about building sim on linux on the mac, not OS X right?
Alan
Yes, my old mac is running ubuntu dapper. I don't know anything about
OS X or any other mac OS, but I hear they're unixy now, so you'd
surely
Hi Chris,
AFIK OSX is a BSD unix with Apple's GUI on top. However, one can add
X instead.
Dave
On Feb 3, 2008, at 8:26 PM, Chris Radek wrote:
On Mon, Feb 04, 2008 at 04:18:49AM +, Alan Condit wrote:
Chris,
You are talking about building sim on linux on the mac, not OS X
right?
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