Re: [Emc-users] encoders

2008-11-02 Thread Ian W. Wright
Hi Dave,

The motors are Minertia brand by Yaskawa Electric of Japan and are model 
mos FA5S-CA11 and FA5X-CA31. I can't find any info about these on the 
web. The encoders are 1000 line with no index pulse. I have put some 
pictures up on my website - *http://tinyurl.com/6nf3sz   
**http://tinyurl.com/5w9942   **http://tinyurl.com/6c3btx   *and *  
**http://tinyurl.com/5z82df

*As you can see, the board has a 2903 dual comparator chip which appears 
to take in A+ and B+ to one comparator and A- and B- to the other and 
send the resulting two outputs to the existing wiring. At the bottom of 
the board there are also the A+, A-, B+ and B- connections - presently 
unused and these are connected directly to the four connections to the 
lower part of the optics. This is an entirely separate piece to the LED 
and is apparently glued directly to the board. On the existing wiring, 
all the blacks appear to be grounds and all the reds are +5v. I am 
assuming that the motors are probably 12 volts but I'm not sure as I 
didn't remove them from the plotter.*
*

-- 
Best wishes,

Ian

Ian W. Wright
Sheffield  UK

The difference between theory and practice is much smaller in theory than in 
practice...


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Re: [Emc-users] Engrave-11 Z test at 50 percent

2008-11-02 Thread Ray Henry
On Sun, 2008-11-02 at 07:46 -0500, John Domville wrote:
 Heinz Reimer,
Thanks for the input. I will check into the information you provided.
 Seems a shame thought to have to use a counter weight on Z axis as the
 system should have been designed to move it own weight. If you have any
 pictures on the counter weight you used please send them to me.
 
 John Domville
 
 -Original Message-
 From: Heinz Reimer [mailto:[EMAIL PROTECTED] 
 Sent: Saturday, November 01, 2008 10:57 PM
 To: Enhanced Machine Controller (EMC)
 Subject: Re: [Emc-users] Engrave-11 Z test at 50 percent
 
 [EMAIL PROTECTED] wrote:

  and on each one of axis pages there is the following settings
 
  Motor Steps per rev 200
  Driver Micro Stepping 4.0
  Max Velocity 1.0 in/sec
  Max Acceleration 30.0 in/sec.
 
  John

I used a much lower accel.  You might try 5 rather than 30.  

Rayh




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Re: [Emc-users] EMC2 Graphical Interface

2008-11-02 Thread Dave Houghton


-Original Message-
From: Chris Radek [mailto:[EMAIL PROTECTED] 
Sent: 01 November 2008 11:57 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] EMC2 Graphical Interface

On Sat, Nov 01, 2008 at 11:17:57PM +0200, Dave Houghton wrote:
 Hello everyone
 
 I see there are several interfaces available, I've decided upon AXIS.
 
 However Editing or Tool Table/Editing is only available if I configured an
 editor in my ini file.
 
 Editing is available in tkemc and mini so I was wondering why was the
 editing; Tool table/editing was left out of AXIS?

This was not an accident; it was a design decision that the user
should be able to use any editor he likes.

In the upcoming EMC2.3, AXIS will have a powerful tool table touch
off that will free you from the tedium of manually editing the tool
table for most operations.

Hi Chris
Sorry for the delay in responding, we had a thunder storm, so I switch the
computer off until it's past.

Just wanted to make sure there wasn't some really obscure reason in not
having a text editor. I will probably be back soon asking how do I load an
editor, but first let me read the manuals/instructions.


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Re: [Emc-users] EMC2 Graphical Interface

2008-11-02 Thread Dave Houghton


-Original Message-
From: John Thornton [mailto:[EMAIL PROTECTED] 
Sent: 02 November 2008 03:16 PM
To: Enhanced Machine Controller EEMC
Subject: Re: [Emc-users] EMC2 Graphical Interface

On 2 Nov 2008 at 13:27, Dave Houghton wrote:

 
 Just wanted to make sure there wasn't some really obscure reason in
 not having a text editor. I will probably be back soon asking how do I
 load an editor, but first let me read the manuals/instructions.

Here is a good place to start

http://www.linuxcnc.org/docview/html//gui_axis.html#r1_11_5

then here

http://www.linuxcnc.org/docview/html//config_ini_config.html#r1_2_3

John

Hello John

Thank you, I have downloaded quite a few manuals, - even The Integrators
Manual. (A more advanced document ...) gee whiz I don't really need a
more advanced document I need a more basic simple document written for
idiots like me. When it comes to computers I'm an idiot. So I need simple
step by step, and one step at a time instructions, preferably in English
using little words. (come on laugh it's meant to be funny). 
Can someone see if I'm on the right track.
The following is where I'm at:

Opened 'gedit'
Opened emc2
Opened configs 
Opened smill.ini  (I named my mill smill -Sherline mill)
(so far so good)
Now I have found
[DISPLAY]

Under [DISPLAY] there is no 'EDIT = ' in there so I assume I have to type in

'EDIT = gedit' (without the quotes)

Question 1) Is the above correct?
Question 2) where do I type it in? - at the top of the list - bottom of the
list, or doesn't it matter.

Thanks to everyone for you're patience.

Dave  




  


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Re: [Emc-users] Engrave-11 Z test at 50 percent

2008-11-02 Thread John Domville
Heinz Reimer,
   Thanks for the input. I will check into the information you provided.
Seems a shame thought to have to use a counter weight on Z axis as the
system should have been designed to move it own weight. If you have any
pictures on the counter weight you used please send them to me.

John Domville

-Original Message-
From: Heinz Reimer [mailto:[EMAIL PROTECTED] 
Sent: Saturday, November 01, 2008 10:57 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Engrave-11 Z test at 50 percent

[EMAIL PROTECTED] wrote:
 Ok...
Test one , with the delay/pause ran flauless. ( at 50 % feed over ride)
  
 Part two ( with out the delay/pause) had problems. It made a couple of
cycles then started the binding noise again, on both the up and down
movement of the Z axis. The tool did not stay .500 from the table but moved
closer and closer until I terminated the program manually .  Both tests were
run with the AXIS slide bar for FEED OVERIDE at 50%. So where in the config
do I cjhange what?

 On the main  Driver page I have the following settings:

 Step Time 5000
 Step Space 5000
 Direction Hold 2
 Direction Step 2

 and on each one of axis pages there is the following settings

 Motor Steps per rev 200
 Driver Micro Stepping 4.0
 Max Velocity 1.0 in/sec
 Max Acceleration 30.0 in/sec.

 John

 


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Re: [Emc-users] two questions

2008-11-02 Thread John Thornton
Take a look here
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TroubleShooting

John



On 2 Nov 2008 at 17:04, ygdan1001 wrote:

  hello!
 
 i did the latency test, the max jitter(base thread 25us) is 113511ns,
 it is over 100us, what should i do to improve them? 
 
 then, i  configurated the stepconf wizard , when i open my mill, there
 is a error: unexpected realtime delay: check dmesg for details. and
 when i open other files, there is also the error.
 
 could anybody give me some suggestions?
 thanks!
 
 yang
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[Emc-users] two questions

2008-11-02 Thread ygdan1001
 hello!
 
i did the latency test, the max jitter(base thread 25us) is 113511ns, it is 
over 100us, what should i do to improve them? 
 
then, i  configurated the stepconf wizard , when i open my mill, there is a 
error: unexpected realtime delay: check dmesg for details. and when i open 
other files, there is also the error.
 
could anybody give me some suggestions?
thanks!
 
yang
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Re: [Emc-users] EMC2 Graphical Interface

2008-11-02 Thread Stephen Wille Padnos
Dave Houghton wrote:

[snip]
  

Thank you, I have downloaded quite a few manuals, - even The Integrators
Manual. (A more advanced document ...) gee whiz I don't really need a
more advanced document I need a more basic simple document written for
idiots like me. When it comes to computers I'm an idiot. So I need simple
step by step, and one step at a time instructions, preferably in English
using little words. (come on laugh it's meant to be funny). 
  

Heh, it is funny :)

Can someone see if I'm on the right track.
The following is where I'm at:

Opened 'gedit'
Opened emc2
Opened configs 
Opened smill.ini  (I named my mill smill -Sherline mill)
  

And here is where you see why simple, step by step instructions fail.  
You named your configuration smill, someone else names theirs 
my-mill, someone else has a lathe, someone else names the config 
Bridgeport1.  Things get confusing when the instructions have to like 
this:
[...]
Open the configuration named the same as you used in step 3
Open the file with the extension .ini, with the same name as the 
configuration you're modifying.
[...]
At some point, the user must think about what they're doing, and 
step-by-step instructions with placeholders like those above will make 
less sense than open the ini file in the editor of your choice, and 
make the following changes.

(so far so good)
Now I have found
[DISPLAY]

Under [DISPLAY] there is no 'EDIT = ' in there so I assume I have to type in

'EDIT = gedit' (without the quotes)

Question 1) Is the above correct?
  

I believe the option is EDITOR, not EDIT

Question 2) where do I type it in? - at the top of the list - bottom of the
list, or doesn't it matter.
  

Doesn't matter.

- Steve


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Re: [Emc-users] EMC2 Graphical Interface

2008-11-02 Thread John Thornton
On 2 Nov 2008 at 13:27, Dave Houghton wrote:

 
 Just wanted to make sure there wasn't some really obscure reason in
 not having a text editor. I will probably be back soon asking how do I
 load an editor, but first let me read the manuals/instructions.

Here is a good place to start

http://www.linuxcnc.org/docview/html//gui_axis.html#r1_11_5

then here

http://www.linuxcnc.org/docview/html//config_ini_config.html#r1_2_3

John

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Re: [Emc-users] EMC2 Graphical Interface

2008-11-02 Thread Dave Houghton

Heh, it is funny :)

Can someone see if I'm on the right track.
The following is where I'm at:

Opened 'gedit'
Opened emc2
Opened configs 
Opened smill.ini  (I named my mill smill -Sherline mill)
And here is where you see why simple, step by step instructions fail.  
You named your configuration smill, someone else names theirs 
my-mill, someone else has a lathe, someone else names the config 
Bridgeport1.  Things get confusing when the instructions have to like 
this:
[...]
Open the configuration named the same as you used in step 3
Open the file with the extension .ini, with the same name as the 
configuration you're modifying.
[...]
At some point, the user must think about what they're doing, and 
step-by-step instructions with placeholders like those above will make 
less sense than open the ini file in the editor of your choice, and 
make the following changes.

(so far so good)
Now I have found
[DISPLAY]

Under [DISPLAY] there is no 'EDIT = ' in there so I assume I have to type
in

'EDIT = gedit' (without the quotes)

Question 1) Is the above correct?
  

I believe the option is EDITOR, not EDIT

Question 2) where do I type it in? - at the top of the list - bottom of the
list, or doesn't it matter.
  

Doesn't matter.

- Steve


Hi Steve

Thanks a million for you're quick response.
Got it EDITOR not EDIT. Can't even get that right!
Yes course it's EDITOR . 

Done it, and it works.

Thank you Steve,and all
Best regards 
Dave
 


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Re: [Emc-users] EMC2 Graphical Interface

2008-11-02 Thread John Thornton
On 2 Nov 2008 at 15:37, Dave Houghton wrote:

 Hello John
 
 Thank you, I have downloaded quite a few manuals, - even The
 Integrators Manual. (A more advanced document ...) gee whiz I
 don't really need a more advanced document I need a more basic simple
 document written for idiots like me. When it comes to computers I'm
 an idiot. So I need simple step by step, and one step at a time
 instructions, preferably in English using little words. (come on laugh
 it's meant to be funny). Can someone see if I'm on the right track.

This is the driving force behind the Getting Started Guide. Also the latest 
version of 
the Stepper Config Wizard automagically adds the editor...

 Now I have found
 [DISPLAY]
 
 Under [DISPLAY] there is no 'EDIT = ' in there so I assume I have to
 type in
 
 'EDIT = gedit' (without the quotes)

What Steve said...

 
 Question 1) Is the above correct?

No 

 Question 2) where do I type it in? - at the top of the list - bottom
 of the list, or doesn't it matter.

I like to add to the bottom of the list but it don't matter where you put it as 
long as 
your after the [DISPLAY] and before the next section.

 
 Thanks to everyone for you're patience.
 
 Dave  
 
 
 
 
 
 
 
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Re: [Emc-users] encoders

2008-11-02 Thread Jeff Epler
You are likely to see two kinds of encoders: TTL and differential
(rs422).

TTL means there's a single wire for the each signal (e.g. A), and it
roughly follows TTL voltage level for high and low signals.

differential means there are two wires for each signal (e.g., A+ and
A-).  The logic-level value is determined by looking at the difference
in voltage between A+ and A-, and this gives increased immunity to
certain kinds of noise.
http://en.wikipedia.org/wiki/Differential_signaling

Differential signals are intended to be decoded into a logic-level
signal with a chip called a differential receiver such as the ones in
this family: http://www.national.com/mpf/DS/DS26LS33M.html

If you scope one phase and it looks like a clean, logic-level signal
then it is sure possible to use it and ignore the complimentary signal.

Jeff

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Re: [Emc-users] [OT] Plasma noise resistant box

2008-11-02 Thread Dennis Deyen
Hal Eckhart wrote:

 Thanks for responding, Jon.

 I don't really know what a commercial-grade noise filter is,
 but I do have a fancy surge supressor. It never helped with
 the old system much. 
   
Hal,

Sola is a company that manufactures higher end isolation transformers, 
surge suppressors and constant voltage transformers.  I have acquired 
some of these from older equipment that was getting scrapped.  A 
constant voltage transformer takes in a wide voltage range like 
95-150VAC and outputs a constant 118VAC output.  This is good for power 
line fluctuation where there are brownouts and overages from motors that 
brake and dump the kinetic energy back into the power lines.  Just do a 
search on ebay.  Sola's surge suppressors are going to be in the $100 
range on ebay as opposed to a $20 fancy plastic one.  Protecting from a 
one-time event ($20 unit) is different than a constant environment of 
transient abuse.  It has been a while but I used to frequent the 3M 
surplus store in Minneapolis and they had all kinds of industrial 
surplus.  I'm sure they had some Sola products.

I am using a rotary phase converter on my Bridgeport VMC.  I had a 
problem when the spindle quickly ramped down to zero during a stop 
spindle or a tool change.  The kinetic energy in the spindle dumped back 
through the spindle driver and back into the power lines.  Since the 
rotary phase converter was not as rigid as the power lines my voltage at 
the rotary phase converter would jump more than 15% or so.  When the 
Bridgeport saw the voltage kick up too high it would fault and require a 
reset.  It was a hard fault and the Z axis would fall about 0.050.  A 
constant voltage transformer would have been a band-aid and probably 
would have worked in my case.  Instead I decided to put a 1.5 second RC 
filter in the analog spindle command (0-10Vdc) line.  This accomplished 
a couple of things for me.  Spindle ramp up and down became smoother 
providing less wear on the spindle and drive and power fluctuations went 
away.
 Once upon a time, I fired the plasma is the air 5 feet away
 from a short piece of zip cord with a digital VOM on it. It
 registered 1000 volts, which is the limit. 
Like you said, the energy from a plasma spark alone can radiate as 
electromagnetic noise and be picked up in a loop of wire some distance 
away.  If this were my setup I would put the PC in a Faraday cage (a 
metal box with adequate cooling but shielded much the same way a 
microwave oven is).  I think the Dell GX270s are mostly plastic so they 
are inviting EMI directly into the motherboard and I/O cards.  The 
problem with replacing a PC whenever it dies is that the PC may issue a 
rapid servo command before it gives out.

You can monitor EMI noise and transients by connecting a neon bulb and 
an LED in series.  If the voltage is high enough to get the neon to 
ionize the neon will blip but the LED will have a brighter flash.  I 
would connect 2 LEDs back to back and in opposite directions to detect 
any positive and negative transients.  You can take an old PC and 
connect the neon bulb  LED setup from any input or output you want to 
monitor and ground of the PC.  If enough voltage is induced in an 
encoder line, etc. the neon bulb and one of the LEDs should blip.  The 
transients may also be too fast or too low in energy to see anything but 
just enough to cause damage.

If transients are getting into the PC through I/O lines, the Faraday 
cage won't help much.  In a super noisy environment I would personally 
run fiber optic transceivers between the PC in a Faraday cage and the 
machine.  Now that optical S/PDIF cables are a couple of bucks on ebay 
you can run 15' of plastic fiber between your PC and the rest of the 
world.  The trick is to find a S/PDIF transceiver board with enough I/O 
to completely pass all the I/O back and forth to the PC.  You might have 
to make a pair of custom isolation PC boards.


Dennis J. Deyen
Product Design Mgr.
Pedersen Power Products
3900 Dahlman Ave.
Omaha  NE  68107







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[Emc-users] Tool File

2008-11-02 Thread Dave Houghton
Hello To All

 

You knew this was coming.

I have opened the Tool file and in the Diameter column it lists the
following:

0.0625

0.125

1.25

etc 

Obviously put in as inch diameters (numbers), I'm set up as mm, am I correct
in thinking that the tool diameter 1.25 will be read automatically by my set
up as 1.25 mm diameter.

 

Once my tool table is done I just put T(with it's unsigned integer) in the
Gcode , and hey presto I'm off and running. Am I correct? It will be a first
if I am.

 

And one more thing is an unsigned integer the same as an unassigned
integer -  personally I think number sounds good.

 

Getting close to milling!

Regards 

Dave 

 

 

 

 

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Re: [Emc-users] Engrave-11 Z test at 50 percent

2008-11-02 Thread Gene Heskett
On Sunday 02 November 2008, John Domville wrote:
Heinz Reimer,
   Thanks for the input. I will check into the information you provided.
Seems a shame thought to have to use a counter weight on Z axis as the
system should have been designed to move it own weight. If you have any
pictures on the counter weight you used please send them to me.

John Domville

-Original Message-
From: Heinz Reimer [mailto:[EMAIL PROTECTED]
Sent: Saturday, November 01, 2008 10:57 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Engrave-11 Z test at 50 percent

[EMAIL PROTECTED] wrote:
 Ok...
Test one , with the delay/pause ran flauless. ( at 50 % feed over ride)

 Part two ( with out the delay/pause) had problems. It made a couple of

cycles then started the binding noise again, on both the up and down
movement of the Z axis. The tool did not stay .500 from the table but moved
closer and closer until I terminated the program manually .  Both tests were
run with the AXIS slide bar for FEED OVERIDE at 50%. So where in the config
do I cjhange what?

 On the main  Driver page I have the following settings:

 Step Time 5000
 Step Space 5000
 Direction Hold 2
 Direction Step 2

 and on each one of axis pages there is the following settings

 Motor Steps per rev 200
 Driver Micro Stepping 4.0
 Max Velocity 1.0 in/sec
 Max Acceleration 30.0 in/sec.

Both MAXVEL and MAXACCELERATION are likely too fast, that vel corresponds to 
60 ipm, and my machine, with 20 tpi screws, direct coupled, is about tapped 
out at 20 ipm.  Reduce that to say 0.25 for starters, it can always be raised 
later.

MAXACCEL here is in the 3 range  So you are trying to adjust a motors speed 10 
times quicker than I can without problems.  Try 2.5, it can always be raised.

My machine (Harbor Freight Micromill) may have slightly bigger motors.  And 
you can see my (West Virginia engineered) solution for a head counter 
springing method at http://gene.homelinux.net:85/gene/emc, also the rest of 
the mess and mods to it, including a whole new z drive method.  The micromill 
has what I'd call a design flaw in that the z drive screw is behind the post, 
like the Sherline, which puts all the binding forces directly into the gibs.  
My setup originally would bind up a 425 oz motor at 5 pounds of downforce.  
What you see now can put 155 pounds on a drill bit.

 John

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-- 
Cheers, Gene
There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order.
-Ed Howdershelt (Author)
The trouble with heart disease is that the first symptom is often hard to
deal with: death.
-- Michael Phelps

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Re: [Emc-users] Tool File

2008-11-02 Thread Dave Houghton


-Original Message-
From: Jeff Epler [mailto:[EMAIL PROTECTED] 
Sent: 02 November 2008 06:19 PM


Select a tool with T#.  Load it with M6.  Turn on tool length
compensation with G43, or off with G49.  Turn on tool radius
compensation with G41 or G42, and off with G40.  When in tool radius
compensation mode, there are various (sometimes onerous) restrictions on
movement.  Relevant sections of the documentaiton include:

http://linuxcnc.org/docs/html/gcode_main.html#sub:T:-Select-Tool
http://linuxcnc.org/docs/html/gcode_main.html#M6%20Tool%20Change
http://linuxcnc.org/docs/html/gcode_main.html#sub:G43,-G49:-Tool
http://linuxcnc.org/docs/html/gcode_main.html#G40,%20G41,%20G41.1,%20G42,%20
G42.1%20Cutter%20Radius%20Compensation
http://linuxcnc.org/docs/html/gcode_main.html#sec:Cutter-Radius-Compensation

 And one more thing is an unsigned integer the same as an unassigned
 integer -  personally I think number sounds good.

That is a bit of programmer talk, just as nonnegative integer would be
mathematician talk.

An unsigned integer is a number without a decimal point or a minus
sign: 0, 1, 2, and so on.

Jeff

Hi Jeff 
Thanks - seems I'm on a roll - uh should not have said that.

Thanks Jeff
Regards 
Dave


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[Emc-users] Plasma noise

2008-11-02 Thread Javid Butler
One thought on the plasma noise. Controlled Power in MI makes some very good 
products for eliminating noise and harmonics.

Full disclosure-I work for the company that represents CP in Las Vegas. We have 
used their products to resolves noise and harmonic issues in a variety of 
industrial environments.

On the other hand they may be more than is needed in this case. They are not 
cheap, but it sounds like you have already tried some of the low cost options.

Here is the link-look at the power purifiers.

http://www.controlledpwr.com/Power_Quality_Applications.html

I hope this helps.

Javid
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Re: [Emc-users] Engrave-11 Z test at 50 percent

2008-11-02 Thread Jon Elson
Ray Henry wrote:

 [EMAIL PROTECTED] wrote:

 and on each one of axis pages there is the following settings

 Motor Steps per rev 200
 Driver Micro Stepping 4.0
 Max Velocity 1.0 in/sec
 Max Acceleration 30.0 in/sec.

 John
   

 I used a much lower accel.  You might try 5 rather than 30.  
   
Holy COW!  No wonder he is having problems, that is VERY fast 
acceleration for a small machine.
(Just to clarify John's post,  that 30 is actually 30 in/sec^2.)
Jon

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Re: [Emc-users] [OT] Plasma noise resistant box

2008-11-02 Thread Karl Schmidt
A metal box only provides a Farday cage to prevent inducing noise into signals. 
 What is much more 
important is to understand and design your ground current paths so they are not 
going to induce any 
common mode or differential mode currents where they will cause problems. You 
will also want to 
understand the concept of a ground pavilion.

An inductive filter of incoming power can be important, as is proper shielding 
isolation of drive 
and sensor signals. Beyond that, most people get lost buying expensive gadgets 
that won't correct 
the underlying design flaws. The ever repeated flaw is failing to use home-run 
grounding and 
thinking that connecting every thing to ground at every point is a good idea. 
Isolating grounds can 
often solve puzzling problems. Failing to consider both common and differential 
mode noise sources 
produces strange explanation from even electrical engineers. Failing to realize 
that a wire 
connected to ground at one end is not at ground on the other end, if it is 
carrying current is endemic.

See -
http://wiki.xtronics.com/index.php/Lightning_Failures_in_Transducers


Karl Schmidt  EMail [EMAIL PROTECTED]
Transtronics, Inc.  WEB http://xtronics.com
3209 West 9th Street Ph (785) 841-3089
Lawrence, KS 66049  FAX (785) 841-0434

Education consists mainly of what we have unlearned. -- Mark Twain



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Re: [Emc-users] Engrave-11 Z test at 50 percent

2008-11-02 Thread John Domville
I ended up setting the acceleration to 10 and the velocity to .5 and
engrave-11 is
Working like a charm. I also selected 50% feed rate over ride in AXIS.

  Now I need to do some research on engraving (routing) PCB foil paths.

John - Elmira N

-Original Message-
From: Jon Elson [mailto:[EMAIL PROTECTED] 
Sent: Sunday, November 02, 2008 12:31 PM
To: [EMAIL PROTECTED]; Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Engrave-11 Z test at 50 percent

Ray Henry wrote:

 [EMAIL PROTECTED] wrote:

 and on each one of axis pages there is the following settings

 Motor Steps per rev 200
 Driver Micro Stepping 4.0
 Max Velocity 1.0 in/sec
 Max Acceleration 30.0 in/sec.

 John
   

 I used a much lower accel.  You might try 5 rather than 30.  
   
Holy COW!  No wonder he is having problems, that is VERY fast 
acceleration for a small machine.
(Just to clarify John's post,  that 30 is actually 30 in/sec^2.)
Jon

https://lists.sourceforge.net/lists/listinfo/emc-users
 


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[Emc-users] Thank you

2008-11-02 Thread Dave Houghton
Hi all

Just a quick thank you to all of you that have helped me over the last
couple of weeks.

 

I haven't connected my Sherline mill up yet, but I will in the next few
days. Going to play with EMC2, Gcodes, tool tables and tool changes first.

 

You have not got rid of me I will be back.

 

Best wishes to all

Dave

 

 

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[Emc-users] LINUX OS question

2008-11-02 Thread John Domville
Being new to LINUX I have only begun to understand my way around this
operating system. Most of what I know about LINUX was forced on me when I
bought a SHERLINE mill and installed Ubuntu for the first time. Anyway, The
question I have is how can I print out the contents of a sub-directory to a
printer.

In the pre-windows, DOS days it was possible to type:

DIR/W  LPT1 Which would send a directory listing to the
printer on LPT1

Or

DIR/W  filename.txt   Which would send a directory listing to a file which
could then be opened
In a text editor and then printed.

Even under today's Windows you can do basically the same thing at the
command prompt (cmd)

So is there any way to do this under LINUX?


John (NGDQ)

(New GUY Dumb Question)


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Re: [Emc-users] LINUX OS question

2008-11-02 Thread John Kasunich
John Domville wrote:
 Being new to LINUX I have only begun to understand my way around this
 operating system. Most of what I know about LINUX was forced on me when I
 bought a SHERLINE mill and installed Ubuntu for the first time. Anyway, The
 question I have is how can I print out the contents of a sub-directory to a
 printer.
 
 In the pre-windows, DOS days it was possible to type:
 
 DIR/W  LPT1 Which would send a directory listing to the
 printer on LPT1
 
 Or
 
 DIR/W  filename.txt   Which would send a directory listing to a file which
 could then be opened
 In a text editor and then printed.
 
 Even under today's Windows you can do basically the same thing at the
 command prompt (cmd)
 
 So is there any way to do this under LINUX?
 
 
 John (NGDQ)
 
 (New GUY Dumb Question)

The equivalent of DIR is ls.  The /W in DIR/W is an option that
tells DIR how to format it's output.  ls has similar options.  I don't
recall what /W does - it's been a long time since I used DOS.  But maybe
ls -l is something like what you want?

You can read the documentation for ls by typing man ls.  man means
show me the manual page, so man followed by a command name means show
the manual for that command.  You can experiment with various ls options
without printing till you see what you like.  Try ls by itself first,
then maybe ls -l, etc.

Once you have output you like, you can save it to a file with by
redirecting it.  ls -l somefile will store the output of the ls -l
command in a file in the current directory called somefile.  From there
you can edit it, print it, etc.

Regards,

John Kasunich

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Re: [Emc-users] LINUX OS question

2008-11-02 Thread Karl Schmidt
John Domville wrote:
 Being new to LINUX I have only begun to understand my way around this
 operating system. Most of what I know about LINUX was forced on me when I
 bought a SHERLINE mill and installed Ubuntu for the first time. Anyway, The
 question I have is how can I print out the contents of a sub-directory to a
 printer.
 
 In the pre-windows, DOS days it was possible to type:
 
 DIR/W  LPT1 Which would send a directory listing to the
 printer on LPT1
 
 Or
 
 DIR/W  filename.txt   Which would send a directory listing to a file which
 could then be opened
 In a text editor and then printed.

ls  filename.txt

This is probably not the appropriate mailing list for general Linux questions - 
there are many other 
lists and books that cover this. If you just want enough info to cover most 
command line operations 
- there is 'Unix for Dummies' that will get you a fast start on these topics.

The 'shell' (usually bash) will do everything that DOS copied from Unix, plus 
much much more. If you 
want to learn more than is covered in the 'Dummies books' I would recommend 
looking at the O'Riely 
'Learning the bash Shell' book.



Karl Schmidt  EMail [EMAIL PROTECTED]
Transtronics, Inc.  WEB http://xtronics.com
3209 West 9th Street Ph (785) 841-3089
Lawrence, KS 66049  FAX (785) 841-0434

Ask any politician in private, It's a blast
spending other peoples money.



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Re: [Emc-users] LINUX OS question

2008-11-02 Thread John Kasunich
Karl Schmidt wrote:

 This is probably not the appropriate mailing list for general Linux questions 
 - there are many other 
 lists and books that cover this. If you just want enough info to cover most 
 command line operations 
 - there is 'Unix for Dummies' that will get you a fast start on these topics.

Agreed.  Don't necessarily need a dead-tree book either, Google can find
lots of stuff.  Try this one:

http://freeengineer.org/learnUNIXin10minutes.html

Regards,

John Kasunich

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[Emc-users] Ground currents (was [OT] Plasma noise resistant box)

2008-11-02 Thread Kent A. Reed
Karl Schmidt wrote Failing to realize that a wire connected to ground 
at one end is not at ground on the other end, if it is carrying current 
is endemic.

Some years ago, while I was still at NIST, we held an international 
conference to address the building design/construction requirements 
necessary to create world class research facilities (which is a warm 
and fuzzy phrase, but never mind!).

Every participant told stories about the problems they had experienced 
with ground-current induced noise. To the shock (so to speak) of the 
NIST staff who were present, an engineer from our own plant division 
confessed that until recently we had an extreme case in a laboratory 
building where the emf measured between neutral (the white wire in U.S. 
120vac circuits, what we are accustomed to think of as ground) and 
earth was as much as 30 volts depending on the time of day and the 
particular pieces of electrical equipment in operation. Yikes! I had 
often heard stories of problems in industrial settings; I never 
suspected a clean lab environment could be just as bad. So can a shop.

Regards,
Kent


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Re: [Emc-users] LINUX OS question

2008-11-02 Thread Jeff Epler
On Sun, Nov 02, 2008 at 06:34:01PM -0500, John Domville wrote:
 In the pre-windows, DOS days it was possible to type:
 
 DIR/W  LPT1

By default, installing emc takes away all parallel-port devices from
regular linux programs.  This reduces the kinds of problems where a
program tries to probe an attached printer and unintentionally causes
the steppers or other attached hardware to do something.  Unfortunately,
it makes it difficult to use a true parallel-port printer once you've
installed linux.

If you have a USB printer (either native USB or using a USB adapter),
then it will work normally on ubunutu even after you install emc2.  Use
the program System  Administration  Printing to set up these printers.

The normal way to send something to the printer is using the lpr
program, and a | (pipe) to send to a program instead of a device.  The
rough linux equivalent would then be 
ls -C | lpr

Jeff

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Re: [Emc-users] Free 3D CADs on Linux WAS: BRL-CAD

2008-11-02 Thread BRIAN GLACKIN
In following a link from another post, I came across a reference to
LignumCAD.  It is a cad system for furniture design.  I have just started
reading the site but it looks like it could be promising.

http://lignumcad.sourceforge.net/doc/en/HTML/index.html

Brian

On Thu, Oct 30, 2008 at 6:37 AM, Mark Wendt (Contractor) 
[EMAIL PROTECTED] wrote:

 Ah, I figured it out.  Your first link was to caelinux.org, which
 brings you to the wiki page.  caelinux.com brings up the page that
 talks about SALOME.

 Mark

 At 07:18 AM 10/30/2008, you wrote:
 Strange you didn't see a link. It's right there on first page at
 
 http://www.caelinux.com/CMS/
 
 You have two options. Get full set of CAE software on a LiveDVD or
 download Salome only as separate package which would run on any Linux
 distro from this page -
 
 
 http://www.caelinux.com/CMS/index.php?option=com_contenttask=viewid=44Itemid=40
 
 CAELinux LiveDVD contains bunch of other software for CAE. I think it's
 worth exploring.
 
 On Thu, 2008-10-30 at 05:49 -0400, Mark Wendt (Contractor) wrote:
   With a little more digging, I found this on the caelinux site:
  
  
 http://www.caelinux.com/CMS/index.php?option=com_contenttask=viewid=44Itemid=40
 
 
   There weren't any direct links to it, but I ended up finding it using
   the search box.
  
   Mark
  
   Mark
  
   At 05:46 AM 10/30/2008, you wrote:
   is it this ?
 http://www.salome-platform.org/home/presentation/overview/
   
   Dave Caroline


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[Emc-users] RTAI version (was: Realtime system did not load)

2008-11-02 Thread Kent A. Reed
Alex recently wrote, in response to discussion about a system with more 
than 1G of ram not loading RTAI
 
   
  This was a known bug on the older system, like last year.  I thought
  they got that fixed!
  Not so, or is Mario using an old version of Ubuntu?
 

 We fixed that on 6.06 dapper by not allowing the system to see more than 
 1G of ram.
 By the time haryd came up, the rtai people were aware of a solution, yet it 
 wasn't part of rtai-3.6 which I used initially for the LiveCD. They fixed 
 the issue for 3.6.1 which is now part of the linuxcnc repository. So if you 
 have your updates installed, then it's definately fixed.
 I can't remember if I rebuilt the LiveCD to include rtai-3.6.1, but probably 
 I didn't.

 Regards,
 Alex
   
I ran into this issue with the 8.04 LiveCD back in May and had a brief 
email exchange about it with Jeff Epler (because I wanted to speak of 
other things with him).

Armed with Jeff's response about the memory constraint that was imposed 
in the 6.06 LiveCD and the rtai fix y'all had been anticipating would be 
released in time for the 8.04-LiveCD build, I went looking for an easy 
way to determine what version of RTAI was actually running on my 
machine. To save others the time it took me to do this (of course I may 
just be the slow kid in the class and the rest of you already know the 
answer), there is a utility called rtai-config that can provide the 
answer when invoked with the --version option.

Unfortunately, the location of this utility seems to be dependent on the 
kernel version because of the way the rtai extensions are built. On my 
machine, it's in the /usr/realtime-2.6.24-16-rtai/bin directory and 
currently it returns the answer 3.6.1, confirming Alex's comment that 
...if you have your updates installed, then it's definitely fixed.

I'll see if I can find an appropriate place to add this tidbit to the wiki.

Regards,
Kent

PS - mentioning the wiki reminds me to take a moment to rant that we all 
should be explicitly date/time stamping our contributions and specifying 
their effectivity (e.g., the software versions to which they apply) so 
subsequent readers have a clue whether the information they are looking 
at is relevant to their problem. As EMC/EMC2 and the wiki both evolve 
over time it gets harder and harder to know what's hot and what's merely 
historically interesting.


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Re: [Emc-users] Free 3D CADs on Linux WAS: BRL-CAD

2008-11-02 Thread BRIAN GLACKIN
Hmmm,


Looks like an interesting concept but its development appears stagnant.
Last copyright appears to be 2002.

Still worth a browse at a minimum.

Brian
On Sun, Nov 2, 2008 at 9:57 PM, BRIAN GLACKIN [EMAIL PROTECTED]wrote:

 In following a link from another post, I came across a reference to
 LignumCAD.  It is a cad system for furniture design.  I have just started
 reading the site but it looks like it could be promising.

 http://lignumcad.sourceforge.net/doc/en/HTML/index.html

 Brian

   On Thu, Oct 30, 2008 at 6:37 AM, Mark Wendt (Contractor) 
 [EMAIL PROTECTED] wrote:

 Ah, I figured it out.  Your first link was to caelinux.org, which
 brings you to the wiki page.  caelinux.com brings up the page that
 talks about SALOME.

 Mark

 At 07:18 AM 10/30/2008, you wrote:
 Strange you didn't see a link. It's right there on first page at
 
 http://www.caelinux.com/CMS/
 
 You have two options. Get full set of CAE software on a LiveDVD or
 download Salome only as separate package which would run on any Linux
 distro from this page -
 
 
 http://www.caelinux.com/CMS/index.php?option=com_contenttask=viewid=44Itemid=40
 
 CAELinux LiveDVD contains bunch of other software for CAE. I think it's
 worth exploring.
 
 On Thu, 2008-10-30 at 05:49 -0400, Mark Wendt (Contractor) wrote:
   With a little more digging, I found this on the caelinux site:
  
  
 http://www.caelinux.com/CMS/index.php?option=com_contenttask=viewid=44Itemid=40
 
 
   There weren't any direct links to it, but I ended up finding it using
   the search box.
  
   Mark
  
   Mark
  
   At 05:46 AM 10/30/2008, you wrote:
   is it this ?
 http://www.salome-platform.org/home/presentation/overview/
   
   Dave Caroline


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Re: [Emc-users] RTAI version

2008-11-02 Thread Stephen Wille Padnos
Kent A. Reed wrote:

[snip]

Armed with Jeff's response about the memory constraint that was imposed 
in the 6.06 LiveCD and the rtai fix y'all had been anticipating would be 
released in time for the 8.04-LiveCD build, I went looking for an easy 
way to determine what version of RTAI was actually running on my 
machine. To save others the time it took me to do this (of course I may 
just be the slow kid in the class and the rest of you already know the 
answer), there is a utility called rtai-config that can provide the 
answer when invoked with the --version option.

Unfortunately, the location of this utility seems to be dependent on the 
kernel version because of the way the rtai extensions are built. On my 
machine, it's in the /usr/realtime-2.6.24-16-rtai/bin directory and 
currently it returns the answer 3.6.1, confirming Alex's comment that 
...if you have your updates installed, then it's definitely fixed.
  

It's possible that running the following command will work regardless of 
what version you have:
/usr/realtime-`uname -r`/bin/rtai-config
the backquotes (`) tell bash to execute the command inside he quotes, 
then stick the result in the command line before executing the command.  
uname -r gives the revision of the kernel (the 2.6.24-15-rtai part), 
so this command would change depending on the kernel version running 
when you issue the command.
The other interesting thing you can do is 
/usr/realtime*/bin/rtai-config (without the quotes).  I'm not sure if 
that will run all matching commands or just the first one, but that will 
go to a directory that begins with realtime, and execute the 
bin/rtai-config found within it.

I'll see if I can find an appropriate place to add this tidbit to the wiki.

Regards,
Kent

PS - mentioning the wiki reminds me to take a moment to rant that we all 
should be explicitly date/time stamping our contributions and specifying 
their effectivity (e.g., the software versions to which they apply) so 
subsequent readers have a clue whether the information they are looking 
at is relevant to their problem. As EMC/EMC2 and the wiki both evolve 
over time it gets harder and harder to know what's hot and what's merely 
historically interesting.
  

The very bottom of every wiki page has a last modified by line, which 
includes the time it was modified as well as who did it.  There's also a 
link for View Other Revisions, where you can see every change that has 
been made to that page, along with the notes (if any) the editor put in 
when making the change.  It's not quite CVS, but it's reasonably easy to 
go back to some date for a particular page (not the whole site though)

- Steve


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Re: [Emc-users] Free 3D CADs on Linux WAS: BRL-CAD

2008-11-02 Thread Gene Heskett
On Sunday 02 November 2008, BRIAN GLACKIN wrote:
In following a link from another post, I came across a reference to
LignumCAD.  It is a cad system for furniture design.  I have just started
reading the site but it looks like it could be promising.

http://lignumcad.sourceforge.net/doc/en/HTML/index.html

I see by the site that it is still at version .2.  I checked it 2, maybe 3 
years ago and it wasn't really ready then at that same version.  I don't have 
it anymore, it was a casualty of upgrading from FC2 to FC6 IIRC.

Brian

On Thu, Oct 30, 2008 at 6:37 AM, Mark Wendt (Contractor) 

[EMAIL PROTECTED] wrote:
 Ah, I figured it out.  Your first link was to caelinux.org, which
 brings you to the wiki page.  caelinux.com brings up the page that
 talks about SALOME.

 Mark

 At 07:18 AM 10/30/2008, you wrote:
 Strange you didn't see a link. It's right there on first page at
 
 http://www.caelinux.com/CMS/
 
 You have two options. Get full set of CAE software on a LiveDVD or
 download Salome only as separate package which would run on any Linux
 distro from this page -

 http://www.caelinux.com/CMS/index.php?option=com_contenttask=viewid=44I
temid=40

 CAELinux LiveDVD contains bunch of other software for CAE. I think it's
 worth exploring.
 
 On Thu, 2008-10-30 at 05:49 -0400, Mark Wendt (Contractor) wrote:
   With a little more digging, I found this on the caelinux site:
 
  

 http://www.caelinux.com/CMS/index.php?option=com_contenttask=viewid=44I
temid=40

   There weren't any direct links to it, but I ended up finding it using
   the search box.
  
   Mark
  
   Mark
  
   At 05:46 AM 10/30/2008, you wrote:
   is it this ?

 http://www.salome-platform.org/home/presentation/overview/

   Dave Caroline

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-- 
Cheers, Gene
There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order.
-Ed Howdershelt (Author)
Yeah, there are more important things in life than money, but they won't go
out with you if you don't have any.

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Re: [Emc-users] Free 3D CADs on Linux WAS: BRL-CAD

2008-11-02 Thread Kent A. Reed
Gentle persons:

I quite understand the desire to find CAD software that (1) is free as 
in beer and (2) runs directly in Linux. I yield to no one in my ardor 
for open source in general and GNU/Linux in particular. As I grow older, 
however, I find that pragmatism is overtaking idealism. With respect to 
CAD, two other characteristics are becoming paramount: (1) how easy is 
it for me to use a particular program without fuss and bother to design 
precise mechanical parts and (2) how easy is it for me to extract the 
design in a usable format. With respect to these characteristics, and 
especially the latter, I have blown hot and cold over various 
open-source CAD applications.

Let me discuss a alternative that is not open source but can be free to 
the user.

In the MS Windows domain, there is a very competent commercial 3D solid 
modeller called Alibre Design, for which there is a free lite version 
called Alibre Design Express (see http://www.alibre.com for details). In 
the years before I retired, I was an early adopter of Alibre Design to 
create some mechanical parts and assemblies in an underfunded project 
because the package was much less expensive than its competitors like 
SolidWorks, SolidEdge, ProEngineer, or Autodesk Inventor for similar 
features. The free Alibre Design Express has some restrictions, of 
course, but it retains the good user interface and the ability to export 
3D models in well-known formats like IGES, SAT, and STEP that can be 
post-processed easily. (For that matter, if you've got the $$, Alibre 
has recently released a companion CAM package and also a woodworking 
package. They also have various offers for at home use of their 
non-free packages that I haven't explored.) 

I run Alibre Design Express on a Windows XP box to design parts. I 
haven't tried to run it over WINE on a Linux box, but then the el-cheapo 
boxes I have running Linux have neither the horsepower or the graphics 
capability needed anyway. Although my Windows XP box is reasonably well 
equipped and set up to dual boot into several different Linux 
distributions, it seems pointless to try running Alibre Design Express 
within a virtual Windows XP environment in Linux for the obvious reason 
that it's already running fine in Windows XP. Naturally, your situation 
may be entirely different but if you haven't tried this product I think 
you should.

Regards,
Kent


PS - Leaving aside its user interface, SALOME GEOM has very good data 
import/export capability because it was intended to support 
interoperability between CAD modeling and computation software, its 
internal geometry functions are excellent, and, wonder of wonders, it 
exposes all its functions via a Python API, so I'm thinking seriously 
about how I could use it for script-driven as opposed to gui-driven 
design. Alibre Design and its commercial competitors expose a good deal 
of their functionality using MS Windows technologies such as COM and 
.NET, so one could drive them via Python as well, but somehow that's not 
as alluring to me.

PPS - FreeCAD (no, not that one, the other one; see 
http://juergen-riegel.net/FreeCAD/Docu/index.php?title=Main_Page) might 
become the open-source 3D modeling application of choice, but it's still 
very early in its development and many claimed features appear to be 
planned rather than actual. The home page is peppered with phrases like 
will have... and will be

PPPS - I have no connection with Alibre or any other CAD-application 
provider.

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[Emc-users] Successful computers: HobbyCNC and EMC2

2008-11-02 Thread Peter Boyer
Hi there everyone,

I thought it would be useful to compile a list of computers that work well
with a HobbyCNC Pro Kit and EMC2.  I have had a lot of trouble with this but
I know some people out there have done it.  I have gone through. 4 computers
in 3 weeks, each with lost steps but in quite different ways.  Clearly, this
is a result of the computer hardware.  Can you provide specs such as:

Computer manufacturer  model (if applicable)
Processor speed  type
Memory
Version of Ubuntu
Video Card
Motherboard (If possible)

Thanks!
~Peter
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Re: [Emc-users] Free 3D CADs on Linux WAS: BRL-CAD

2008-11-02 Thread Alex Joni
snip
 features. The free Alibre Design Express has some restrictions, of
 course, but it retains the good user interface and the ability to export
 3D models in well-known formats like IGES, SAT, and STEP that can be
 post-processed easily. (For that matter, if you've got the $$, Alibre
 has recently released a companion CAM package and also a woodworking
 package. They also have various offers for at home use of their
 non-free packages that I haven't explored.)

There is recently a package called Alibre CAM Xpress, which is also free 
like Alibre Design Xpress.
It only does 2.5D though, but it should be enough for most users.
I think atm it's invite only, but if someone would like it, I can see if I 
can send out an invite.

snip
 PPPS - I have no connection with Alibre or any other CAD-application
 provider.

Ditto..

Regards,
Alex


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Re: [Emc-users] Successful computers: HobbyCNC and EMC2

2008-11-02 Thread Alex Joni
There is already a list started at:
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Latency-Test

Regards,
Alex


- Original Message - 
From: Peter Boyer [EMAIL PROTECTED]
To: emc-users@lists.sourceforge.net
Sent: Monday, November 03, 2008 8:22 AM
Subject: [Emc-users] Successful computers: HobbyCNC and EMC2


 Hi there everyone,

 I thought it would be useful to compile a list of computers that work well
 with a HobbyCNC Pro Kit and EMC2.  I have had a lot of trouble with this 
 but
 I know some people out there have done it.  I have gone through. 4 
 computers
 in 3 weeks, each with lost steps but in quite different ways.  Clearly, 
 this
 is a result of the computer hardware.  Can you provide specs such as:

 Computer manufacturer  model (if applicable)
 Processor speed  type
 Memory
 Version of Ubuntu
 Video Card
 Motherboard (If possible)

 Thanks!
 ~Peter


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