Re: [Emc-users] z axis drift / driver timing / Jitter

[Chris Epicier]

Dear Ian


> I had a similar problem which I traced to interference from 
> the spindle motor - this was in spite of having suppressor
How did you trace that? oszillosope?  The problem came out of the blue. I have 
a hard time to believe it is from this, I did not change the mill. 

> caps on the motor, proper grounding and ferrite rings
> around 
> both the spindle and Z-axis motor wires. 

I have neither of this, currently organising ferrite rings. 

> I had to change
> the 
> spindle motor type before the problem would go away...

I will let the mill dryrun the jobs without the spindle running.

I'll be back

greets chris

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[Emc-users] emc2 magnetic linear and maby rotery encoders and screw compensation I see this in the wiki but not documented in printed documentation.

[joshua wojnas]

emc2 magnetic linear and maby rotery encoders and screw compensation I
see this in the wiki but not documented in printed documentation.

Where would I find more verbose documentation on this? I am new to
emc2 but I am working twards assisting the contraptor.org project.

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[Emc-users] linear and maby rotery encoders and screw compensation in main documentation?

[joshua wojnas]

linear and maby rotery encoders and screw compensation in main
documentation? Hi I was wondering if these are in the regular
documentaion I looked but didn't find it.

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Re: [Emc-users] linear and maby rotery encoders and screw compensation in main documentation?

[Stuart Stevenson]

Joshua,
  I think this is what you are asking for.

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Combining_Two_Feedback_Devices_On_One_Axis

Stuart

On Thu, Dec 17, 2009 at 8:24 AM, joshua wojnas  wrote:

> linear and maby rotery encoders and screw compensation in main
> documentation? Hi I was wondering if these are in the regular
> documentaion I looked but didn't find it.
>
> --
> thanks for your time,
> Joshua
>
>
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Re: [Emc-users] EZ Turn Express CAM Software - Anyone using it ?? Is it any good?

[Dave]

Is anyone familiar with this Windows based CAM package?   Is it any good?

I think that Bridgeport started the software development but it doesn't 
look like it has been updated since 2006 or so.

Is this the same software that is used on the EZ Turn Bridgeport lathes? 

Dave

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[Emc-users] Help with Kinematics

[Dave Fansolato]

I am interested in using EMC2 to control a homemade SCARA type arm. 

 

My question is how do I configure the arm lengths and required info for the
kinematics to be correct.

 

Do I select the scara setup that is already in EMC2?

 

Is there a way to modify the existing scara kinematic file that is included
with EMC2?

 

Do I have to write my own kinematics?

 

I am a total newbie when it comes to Linux and EMC2.

You may have to hold my hand through this but all/any help would be greatly
appreciated.

 

Dave

 

Dave Fansolato

i-cubed

Industry Innovators Inc.

873 Highway 8

Stoney Creek, Ont.

Phone: 905 643 8685

Fax: 905 643 3949

Cell: 905 929 8882

Email: dfansol...@icubed.biz  

Website: icubed.biz  

iCubed

 

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Re: [Emc-users] z axis drift / driver timing / Jitter

[Ian W. Wright]

 >  I traced to interference from
 > > the spindle motor - this was in spite of having suppressor
How did you trace that? oszillosope?  The problem came out 
of the blue. I have a hard time to believe it is from this, 
I did not change the mill. >

Purely observation Chris,

At first everything worked OK for about a year, then I 
started to get a spate of broken cutters and realised that 
the z-axis was very slowly drifting downwards during a cut. 
I put a dial gauge on a magnetic base on the table with the 
plunger under the z-axis and watched it both with the 
spindle running and with it not running. When it ran, the 
z-axis moved down about 10 thous a minute - in my case, on 
very small work, this was enough to quickly break sub-1mm 
carbide end mills.

I only passed this on as a possibility - your case may be 
different but your situation is most probably caused by 
electrical interference either at a frequency within the 
normal operating frequency of your axis motor or at a 
multiple of it which is producing a beat frequency. I 
suppose that if you measure the speed at which the axis is 
moving when it should be stationary, you should be able to 
work out the frequency of the interference and maybe use 
that information to track down the cause

Best wishes,
Ian
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Sheffield  UK

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[Emc-users] network problems

[mike walker]

Just loaded EMC2 onto a new ASUS P5KPL-CM motherboard. The software disk has a 
linux network driver on it, of course no way to load it easly unless your in 
windows. I downloaded the correct driver onto a usb thumbdrive but am haveing 
no luck getting it it to load. the instructions i have been able to find are 
two types. inclomeplete and wrong. anyone had any luck with this board? my next 
step it so load an old d-link network card into the box and see if i can hook 
up with that.
Mike Walker


  
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Re: [Emc-users] network problems

[Stephen Wille Padnos]

mike walker wrote:

>Just loaded EMC2 onto a new ASUS P5KPL-CM motherboard. The software disk has a 
>linux network driver on it, of course no way to load it easly unless your in 
>windows. I downloaded the correct driver onto a usb thumbdrive but am haveing 
>no luck getting it it to load. the instructions i have been able to find are 
>two types. inclomeplete and wrong. anyone had any luck with this board? my 
>next step it so load an old d-link network card into the box and see if i can 
>hook up with that.
>  
>
A quick google turns up this thread:


- Steve

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Re: [Emc-users] Help with Kinematics

[Yi-Shin Li]

On Fri, Dec 18, 2009 at 5:14 AM, Dave Fansolato wrote:

> I am interested in using EMC2 to control a homemade SCARA type arm.
>
> My question is how do I configure the arm lengths and required info for the
> kinematics to be correct.
>
> Do I select the scara setup that is already in EMC2?
>
Yes, you may start from there.

>
> Is there a way to modify the existing scara kinematic file that is included
> with EMC2?
>
Yes, because people have successfully done this, and have SCARA controlled
by EMC2.

>
> Do I have to write my own kinematics?
>
It depends on how your SCARA geometry is.


Yishin Li
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Re: [Emc-users] Help with Kinematics

[Yi-Shin Li]

Hello Dave,

I've successfully helped 2 of my customers to control their SCARA with EMC2.
Here's one of the video:
http://www.youtube.com/watch?v=JF6dYXo2CeE

I'm willing to provide professional consulting service to help you
integrating SCARA with EMC2.

Sincerely yours,

Yishin Li
-- 
Arais Robot Technology

On Fri, Dec 18, 2009 at 5:14 AM, Dave Fansolato wrote:

> I am interested in using EMC2 to control a homemade SCARA type arm.
>
>
>
> My question is how do I configure the arm lengths and required info for the
> kinematics to be correct.
>
>
>
> Do I select the scara setup that is already in EMC2?
>
>
>
> Is there a way to modify the existing scara kinematic file that is included
> with EMC2?
>
>
>
> Do I have to write my own kinematics?
>
>
>
> I am a total newbie when it comes to Linux and EMC2.
>
> You may have to hold my hand through this but all/any help would be greatly
> appreciated.
>
>
>
> Dave
>
>
>
> Dave Fansolato
>
> i-cubed
>
> Industry Innovators Inc.
>
> 873 Highway 8
>
> Stoney Creek, Ont.
>
> Phone: 905 643 8685
>
> Fax: 905 643 3949
>
> Cell: 905 929 8882
>
> Email: dfansol...@icubed.biz 
>
> Website: icubed.biz 
>
> iCubed
>
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Re: [Emc-users] Help with Kinematics

[Yi-Shin Li]

Sorry to emc2-list-users, I should made previous mail off-list.
I apologize again for sending irreverent messages to this list.

Sincerely,
Yishin Li

On Fri, Dec 18, 2009 at 7:43 AM, Yi-Shin Li  wrote:

> Hello Dave,
>
> I've successfully helped 2 of my customers to control their SCARA with
> EMC2. Here's one of the video:
> http://www.youtube.com/watch?v=JF6dYXo2CeE
>
> I'm willing to provide professional consulting service to help you
> integrating SCARA with EMC2.
>
> Sincerely yours,
>
>
> Yishin Li
> --
> Arais Robot Technology
>
> On Fri, Dec 18, 2009 at 5:14 AM, Dave Fansolato wrote:
>
>> I am interested in using EMC2 to control a homemade SCARA type arm.
>>
>>
>>
>> My question is how do I configure the arm lengths and required info for
>> the
>> kinematics to be correct.
>>
>>
>>
>> Do I select the scara setup that is already in EMC2?
>>
>>
>>
>> Is there a way to modify the existing scara kinematic file that is
>> included
>> with EMC2?
>>
>>
>>
>> Do I have to write my own kinematics?
>>
>>
>>
>> I am a total newbie when it comes to Linux and EMC2.
>>
>> You may have to hold my hand through this but all/any help would be
>> greatly
>> appreciated.
>>
>>
>>
>> Dave
>>
>>
>>
>> Dave Fansolato
>>
>> i-cubed
>>
>> Industry Innovators Inc.
>>
>> 873 Highway 8
>>
>> Stoney Creek, Ont.
>>
>> Phone: 905 643 8685
>>
>> Fax: 905 643 3949
>>
>> Cell: 905 929 8882
>>
>> Email: dfansol...@icubed.biz 
>>
>> Website: icubed.biz 
>>
>> iCubed
>>
>
>
>
>


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Re: [Emc-users] Commercial Info

[Kenneth Lerman]

Li's posting brings to mind a question.

Should we provide an area on our Wiki for listings of a commercial 
nature? In particular should we provide a place where EMC consultants 
can post their contact information?

In the past, I believe we've seen people who would like to retrofit 
machines to EMC, but lack the hardware and/or software support to do so.

I believe that we should allow:
1 -- A listing page where contact information is provided. This would 
permit three or four lines per person.
2 -- User pages -- limited to text only that one could use for a brief 
(we could limit the number of lines) pitch describing the services provided.

This would be supported by a single link on the front page of the Wiki. 
Anyone who didn't want to look at sales pitches wouldn't have to look at it.

Ken

Yi-Shin Li wrote:
> Sorry to emc2-list-users, I should made previous mail off-list.
> I apologize again for sending irreverent messages to this list.
>
> Sincerely,
> Yishin Li
>
>   
--


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Re: [Emc-users] Commercial Info

[Dale Grover]

We provide links to commercial hardware, and it's helpful.  I think 
providing listings for consultants is a good idea.

"EMC is free and open-source software, and there are freely-available 
online sources of documentation, information, and help at .  As an additional resource, consultants who provide service 
related to EMC may list their contact information along with a brief 
(1-line) description.  (More detailed information may be placed on a 
separate wiki page--text only, one or two paragraphs.)"

--Dale


At 8:07 PM -0500 12/17/09, Kenneth Lerman wrote:
>Li's posting brings to mind a question.
>
>Should we provide an area on our Wiki for listings of a commercial
>nature? In particular should we provide a place where EMC consultants
>can post their contact information?
>
>In the past, I believe we've seen people who would like to retrofit
>machines to EMC, but lack the hardware and/or software support to do so.
>
>I believe that we should allow:
>1 -- A listing page where contact information is provided. This would
>permit three or four lines per person.
>2 -- User pages -- limited to text only that one could use for a brief
>(we could limit the number of lines) pitch describing the services provided.
>
>This would be supported by a single link on the front page of the Wiki.
>Anyone who didn't want to look at sales pitches wouldn't have to look at it.
>
>Ken
>
>Yi-Shin Li wrote:
>>  Sorry to emc2-list-users, I should made previous mail off-list.
>>  I apologize again for sending irreverent messages to this list.
>>
>>  Sincerely,
>>  Yishin Li
>>
>>  
>--
>
>
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[Emc-users] Is their better step by step instructions for calibrating the lead screws & using encoders with cheap lead screws? Not in the wiki it doen't show enough detail for me to do it.

[joshua wojnas]

Is their better step by step instructions for calibrating the lead
screws & using encoders with cheap lead screws? Not in the wiki it
doen't show enough detail for me to do it.

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Re: [Emc-users] network problems

[Chris Epicier]

Hi mike


> Just loaded EMC2 onto a new ASUS
> P5KPL-CM motherboard. The software disk has a linux network
> driver on it, of course no way to load it easly unless your
> in windows. I downloaded the correct driver onto a usb
> thumbdrive but am haveing no luck getting it it to load. the
> instructions i have been able to find are two types.
> inclomeplete and wrong. anyone had any luck with this board?
> my next step it so load an old d-link network card into the
> box and see if i can hook up with that.
> Mike Walker

Some boards allow to disable the ethernet in bios, kindly verify it is enabled 
first.

I do not have this board, but several other asus boards. They always worked. I 
just glanced at the asus page 
http://www.asus.com/product.aspx?P_ID=6nnVb6RBxd7PhGmt 
it is stated it has Intel G31 Intel ICH7 chipset. nothing said about the 
ethernet chip. So, I would suggest you do a lspci and probably paste the output 
here. it will look something like this:
...
00:10.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a2)
00:11.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a2)
...
then you may google  for the correct kernel module and load it manually like 
ths : insmod forcedeth

I always have a knoppix live cd available. booting this, will give you most 
liekly a working configuration for your hardware, look at lsmod output and 
compare it to lspci. I had a similar problem once (not emc2) and was able to 
convince the distro to load the correct kernel module based on the knoppix 
lspci / insmod output. In that case I had to tweak the modprobe.conf to get it 
permanently right.

hth
chris



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