Re: [Emc-users] Minimum hardware?

[Jon Elson]

On 10/21/2015 08:20 PM, rayj wrote:
> What's the minimum hardware that the current version will run on?  I
> looked at the wiki and the .org pages and the information I could find
> is for Ubuntu 8 requirements.
>
> I'm just playing and exploring, I'm not actually running a machine, so
> speed and latency aren't issues for me right now.
>
>
Well, a 1 GHz Pentium-4 class machine is probably one of the 
minimum types.  Also, there are a bunch of
systems with Atom CPUs that work pretty well.  Select ho-hum 
graphics boards, some of the high-end 3D gaming graphics 
cards cause latency problems.  1 GB of memory should be 
fine, and a 40 GB hard drive should be plenty.  In other 
words, many cast-off desktop computers will do very well.

There is a list of systems that have been tried, and their 
latency performance.  This is in the wiki.

Jon

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Re: [Emc-users] 2.7.0, new trajectory planner, lost it's perfect pitch

[Tom Easterday]

Rob,
My file was a bit modified from the default.  But I think the reason for the 
change in speed in 2.7 is that G64 is selected (by default?) and so rather than 
play out to the ends of the timing values it blends to the next move and a) 
runs faster, and b) sounds different as it swoops into the next move rather 
than moving cleanly at a point.  I set G61 and now it slows down in 2.7 and 
sounds better as well.  I think G61 was in effect in the original video.  I 
also had originally set the scale on all three axes to be identical, whereas 
Jeff’s has the third (or fourth) axis in a different scale for harmony.  I 
played with that as well, so now my third axis is playing harmony.  I will send 
you my code and try to post a video tomorrow.  

I did learn about ARC_BLENDs though, thanks!  By the way there appears to be no 
documentation anywhere on that config parameter.  I finally found it buried in 
the source code in a directory with some tests.

I think I need to apply for a grant to get a roomful of cnc machines playing a 
symphony ;-)

-Tom



> On Oct 21, 2015, at 9:41 PM, Robert Ellenberg  wrote:
> 
> Thanks Jeff, I loaded it up in a 4-axis sim config. I think my initial idea
> is wrong about ARC_BLEND_RAMP_FREQ, since all of the blending happens
> between 4 axes (parabolic blends only).
> 
> Just for fun, here's both clips together:
> 
> http://www.youtubedoubler.com/?video1=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DJKNieuI6Hmo&start1=0&video2=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DS0re79zEX5A&start2=11&authorName=rellenberg
> 
> It seems like it's running faster in your 2.7 video. Has the configuration
> / scale changed between those videos? It might sound better if it runs at
> the same speed. For reference, on my test config, the program takes about
> 36 seconds on both 2.6 and 2.7.
> 
> Rob
> 
> On Mon, Oct 19, 2015 at 9:39 PM, Jeff Epler  wrote:
> 
>> On Mon, Oct 19, 2015 at 11:30:14PM +, Robert Ellenberg wrote:
>>> would you mind sharing the g-code so I can
>>> take a look at the slow spots?
>> 
>> A version of this program is in the sample nc_files as "daisy.ngc".
>> 
>> It needs to be modified to run on a 3-axis machine, and only "sounds
>> good" on a high-accel stepper machine with properly configured scales in
>> the gcode.
>> 
>>(set XYZA axis scales)
>>O100 call [6400] [6400] [8000] [80]
>> 
>> Jeff
>> 
>> 
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Re: [Emc-users] 2.7.0, new trajectory planner, lost it's perfect pitch

[Robert Ellenberg]

Thanks Jeff, I loaded it up in a 4-axis sim config. I think my initial idea
is wrong about ARC_BLEND_RAMP_FREQ, since all of the blending happens
between 4 axes (parabolic blends only).

Just for fun, here's both clips together:

http://www.youtubedoubler.com/?video1=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DJKNieuI6Hmo&start1=0&video2=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DS0re79zEX5A&start2=11&authorName=rellenberg

It seems like it's running faster in your 2.7 video. Has the configuration
/ scale changed between those videos? It might sound better if it runs at
the same speed. For reference, on my test config, the program takes about
36 seconds on both 2.6 and 2.7.

Rob

On Mon, Oct 19, 2015 at 9:39 PM, Jeff Epler  wrote:

> On Mon, Oct 19, 2015 at 11:30:14PM +, Robert Ellenberg wrote:
> > would you mind sharing the g-code so I can
> > take a look at the slow spots?
>
> A version of this program is in the sample nc_files as "daisy.ngc".
>
> It needs to be modified to run on a 3-axis machine, and only "sounds
> good" on a high-accel stepper machine with properly configured scales in
> the gcode.
>
> (set XYZA axis scales)
> O100 call [6400] [6400] [8000] [80]
>
> Jeff
>
>
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[Emc-users] Minimum hardware?

[rayj]

What's the minimum hardware that the current version will run on?  I 
looked at the wiki and the .org pages and the information I could find 
is for Ubuntu 8 requirements.

I'm just playing and exploring, I'm not actually running a machine, so 
speed and latency aren't issues for me right now.

TIA

-- 
Raymond Julian
Kettle River, MN

The things we admire in men, kindness and generosity, openness, honesty, 
understanding and feeling are the concomitants of failure in our system. 
And those traits we detest, sharpness, greed, acquisitiveness, meanness, 
egotism and self-interest are the traits of success. And while men 
admire the quality of the first they love the produce of the second. 
-John Steinbeck, novelist, Nobel laureate (1902-1968)

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Re: [Emc-users] 7i90HD + 7i48

[Peter C. Wallace]

On Wed, 21 Oct 2015, Bengt Sj?lund wrote:

> Date: Wed, 21 Oct 2015 22:39:00 +0200
> From: "[UTF-8] Bengt Sj?lund" 
> Reply-To: "Enhanced Machine Controller (EMC)"
> 
> To: Emc-users@lists.sourceforge.net
> Subject: [Emc-users] 7i90HD + 7i48
> 
> Next questions,
>
> How do I setup my Mesa Boards
>
> 7i90HD + 7i48
>
> Cannot find these in pulldown menus
>
>
> /Bengt
>

I suspect you will have to edit your own hal file for that combination

(the hm2-servo config for a 7I43 should work as long as you change all 7I43 
names to 7I90)

>
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Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


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[Emc-users] 7i90HD + 7i48

[Bengt Sjölund]

Next questions,

How do I setup my Mesa Boards

7i90HD + 7i48

Cannot find these in pulldown menus


/Bengt


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Re: [Emc-users] Password issues

[Bengt Sjölund]

Tuché

This how it works in W7 = only PW ( hard to learn old dogs to sit ;) )

And I have been barking like hell all evening, burning several DVD's etc

Cheers
Bengt


Den 2015-10-21 kl. 22:20, skrev andy pugh:
> On 21 October 2015 at 20:58, Bengt Sjölund  wrote:
>> So can somebody tell me what I am doing wrong with this straight forward
>> install of 2.7
> Often the problem is typing the password at the username prompt. (I do
> this myself about 50% of the time)
>
>


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Re: [Emc-users] Password issues

[andy pugh]

On 21 October 2015 at 20:58, Bengt Sjölund  wrote:
> So can somebody tell me what I am doing wrong with this straight forward
> install of 2.7

Often the problem is typing the password at the username prompt. (I do
this myself about 50% of the time)


-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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[Emc-users] Password issues

[Bengt Sjölund]

Hi,

I am new to this with LinuxCNC and just dowloaded latest ISO, do install 
OK but cannot login = get message = wrong password.

Tried install in Swedish and US = same problems.


Have since long time ago Ubuntu 10.04 /2.5.0 with dual boot W7 + Mach3 
and it works in this PC so I decided to install directly to SSD.
Comes to login windows and then = wrong password. Believe me I have 
tried several different PW's and still no dice.

So can somebody tell me what I am doing wrong with this straight forward 
install of 2.7


By the way I can not upgrade my old Ubuntu 10.04, update manager fails. 
Any hints on what to do?
The dualboot is a must as I need Mach3 to function until I get LinuxCNC 
working. 7i90HD + 7i48 are the boards I have for lathe Z/X+Spindle all 
servos.


Cheers from Sweden
Bengt

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Re: [Emc-users] Mesa Ethernet products

[sam sokolik]

setup has gotten exponentially easier since then

On 10/21/2015 2:42 PM, andy pugh wrote:
> On 21 October 2015 at 20:29, Marius Liebenberg  wrote:
>>Obviously it was not you busy looking at the new stuff that has been
>> around for a while :).
> I have a Youtube video on my channel of a 7i80 in action posted
> December 2013. :-)
>


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Re: [Emc-users] Mesa Ethernet products

[andy pugh]

On 21 October 2015 at 20:29, Marius Liebenberg  wrote:
>   Obviously it was not you busy looking at the new stuff that has been
> around for a while :).

I have a Youtube video on my channel of a 7i80 in action posted
December 2013. :-)

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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Re: [Emc-users] Mesa Ethernet products

[Marius Liebenberg]

  Obviously it was not you busy looking at the new stuff that has been 
around for a while :). All very exciting. I will be making a switch to 
Ethernet based controls soon and I dont think I will be doing LPT stuff 
after that.

I have don some configs with the 7i80 and it is really great.

-- Original Message --
From: "Belli Button" 
To: "'Enhanced Machine Controller (EMC)'" 

Sent: 2015-10-21 21:14:32
Subject: Re: [Emc-users] Mesa Ethernet products

>So
>
>I've been having a look at the Mesa website and see a few products that 
>I
>don't think existed until recently.  All Ethernet based:
>
>1. 7i92Ethernet to dual 'LPT' ports, easy retrofit for all 
>existing
>LPT based systems
>2. 7i80DB   Ethernet to four 'LPT' ports, easy retrofit for all 
>existing LPT
>based systems
>3. 7i80HD   Ethernet to 3# 50way IDC, replaces 5i23 (5i20) based 
>systems
>4. 7i76E   Ethernet to with 7i76, 5 axis stepper breakout board
>
>Has someone been busy?
>
>
>
>
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Re: [Emc-users] Mesa Ethernet products

[Belli Button]

So

I've been having a look at the Mesa website and see a few products that I
don't think existed until recently.  All Ethernet based:

1. 7i92Ethernet to dual 'LPT' ports, easy retrofit for all existing
LPT based systems
2. 7i80DB   Ethernet to four 'LPT' ports, easy retrofit for all existing LPT
based systems
3. 7i80HD   Ethernet to 3# 50way IDC, replaces 5i23 (5i20) based systems
4. 7i76E   Ethernet to with 7i76, 5 axis stepper breakout board

Has someone been busy? 




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Re: [Emc-users] 2.7.0 is out!

[jrmitchellj .]

After some more testing, I am beginning to believe that.
I added "idle=poll" to the boot parameters, and that seemed to help a bit.
I am still trying to figure out why the latency is larger with the new
install of Debian & LCNC 2.7.0.

Are there any other tests or utilities I can use to try and catch what may
be causing the occasional long latency?

Ray

--J. Ray Mitchell Jr.
jrmitche...@gmail.com
(818)324-7573


The dogmas of the quiet past, are inadequate to the stormy present. The
occasion is piled high with difficulty, and we must rise with the occasion.
As our case is new, so we must think anew and act anew. We must disenthrall
ourselves, and then we shall save our country.*Abraham Lincoln
*, *Annual message
to Congress, December 1, 1862*
*16th president of US (1809 - 1865)*

On Mon, Oct 19, 2015 at 1:51 AM, andy pugh  wrote:

> On 19 October 2015 at 06:39, jrmitchellj .  wrote:
> > Looking at the system monitor, it looks like all tasks are running on the
> > first core.
>
> Can you see RTAI in the system monitor? (I don't know the process name).
> I seem to recall hearing that isolcpus does lead to RTAI running in a
> separate core, and that core becomes hidden from the system monitor.
>
> --
> atp
> If you can't fix it, you don't own it.
> http://www.ifixit.com/Manifesto
>
>
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