Hi all,
I have an application that needs (eventually) 4 axes.
Two are X and Y and the other pair need to track (rotationally) with
in a few degrees or better.
Rotational speeds are from zero to 1800 rpm for one axis and either
1:1 or 2:1 for the other.
The speed of rotation and the vectorized
Kirk Wallace wrote:
> The turret rotates at about one revolution per second, giving 125ms per
> tool position. My guess is that if I can process four or five position
> samples in that time, it should work. The problem is that, I think it is
> taking around 200ms to do it. If I were using a precom
Kirk Wallace wrote:
>On Thu, 2007-08-23 at 17:24 +, ben lipkowitz wrote:
>
>
>>This really sounds like a perfect job for classicladder. If you arent
>>interested in learning ladder logic, then writing a custom hal component
>>might be easier, since you seem comfortable with C. I think the
On Thu, 2007-08-23 at 17:24 +, ben lipkowitz wrote:
> This really sounds like a perfect job for classicladder. If you arent
> interested in learning ladder logic, then writing a custom hal component
> might be easier, since you seem comfortable with C. I think the issue here
> is that your s
On Thursday 23 August 2007, Jim Register wrote:
>Jon Elson wrote:
>> Gene Heskett wrote:
>>> On Tuesday 21 August 2007, Jon Elson wrote:
>>
>>I think with a hollow electrode with a drip feed
>>
scheme through the electrode it would go a lot faster.
>>>
>>> Theres always that 'yabut' Jon, i
Chris Mason wrote:
>How about switching out the video card?
>
>
That's a good option. Some old Matrox card (G400 or G450 are good, G200
is passable) would be excellent.
- Steve
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This SF.net email is sponsored by: Splun
How about switching out the video card?
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stephen Wille
Padnos
Sent: Thursday, August 23, 2007 3:55 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] loading emc-unbuntu
Chris Mason wrote:
>I'
Chris Mason wrote:
>I'm fairly sure the video card is an oxygen. The system was built for
>cad/cam several years ago but is still very fast for what I use it for.
>
>
It should work in the VESA/BIOS mode the boot CD uses, but it may not.
I don't think 3DLabs was ever very good with Linux driv
I'm fairly sure the video card is an oxygen. The system was built for
cad/cam several years ago but is still very fast for what I use it for.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stephen Wille
Padnos
Sent: Thursday, August 23, 2007 3:33 PM
To:
Cecil Thomas wrote:
>Thanks for the help.
>I set my base period to 15,000, servo period to 60,000 and traj
>period to 600,000.
>
>
Ack!
Unless you're running a servo machine at 1000m/min (yes, 1 kilometer per
minute), you don't need a 60 microsecond servo rate. For most "normal"
machines -
OK.
It now sounds to me like the video card is some extremely strange beast
(at least relative to the Linux world :) ), or something like the
multiprocessor thing is causing issues.
I'll be interested in seeing the hardware specs wheen you get them
later. I think you may need to install from
Thanks for the help.
I set my base period to 15,000, servo period to 60,000 and traj
period to 600,000.
I lowered my max vel to .75 (45 inches per minute, plenty fast
enough). Everything seems happy except the realtime error which I
have not run to ground yet.
The RT error was there at the lar
When the pc first starts to boot (black screen/white letters), it
acknowledges that the cd is in and seems to be reading it (some verbage that
I don't remember but it seems to know linux is in there). Right after this
is when the ubuntu screen appears on the working pc.this is when the
screen g
Chris Mason wrote:
>Can you recommend a low level (downloadable) program for cleaning the disk.
>I'd rather not swap disks around and all that if I can avoid it. I have a
>feeling that you are right and windows somehow left some crap on the system
>that I can't seem to shake.
>
>
I'm sure that'
Can you recommend a low level (downloadable) program for cleaning the disk.
I'd rather not swap disks around and all that if I can avoid it. I have a
feeling that you are right and windows somehow left some crap on the system
that I can't seem to shake.
-Original Message-
From: [EMAIL PRO
Chris,
How about putting the hard drive from the bad machine into the good
machine and trying to install onto it there? The other thing would be to
get hold of a low level disk repair program and run it on the disk from
the suspect machine. If you install the Linux as the only OS on the
machin
On Thu, Aug 23, 2007 at 10:40:02AM -0600, Sebastian Kuzminsky wrote:
> About the circuit, what is the purpose of resistors R1-R4? They look like
> pull-up resistors for the encoder outputs.
The encoder I had used OC drivers, so the resistors were the recommended
circuit. If your encoder has push
This really sounds like a perfect job for classicladder. If you arent
interested in learning ladder logic, then writing a custom hal component
might be easier, since you seem comfortable with C. I think the issue here
is that your script is not running realtime, and so the timing is off.
As you
Hi,
Thanks everybody the answers. I made a picture about pid.0.error (X-axis),
pid.1.error (Y-axis), axis.0.motor-pos-cmd and axis.0.motor-pos-cmd. You can
see it in: http://www.upload-images.net/imagen/c6ebc76f47.png , an other
after the acceleration changed smaller value:
http://www.upload-imag
Chris Mason wrote:
>I'll have to get back to you w/that info. What's smp?
>
>
Symmetrical Multi-Processing - more than one CPU
- Steve
-
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to
I'll have to get back to you w/that info. What's smp?
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stephen Wille
Padnos
Sent: Thursday, August 23, 2007 12:59 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] loading emc-unbuntu
Chris
Chris Mason wrote:
>The ubuntu logo does not show up. The pc has over 600mb of RAM and is
>running two 500mhz intels. It boots windows xp disk w/no problems. I think
>bill gates doesn't want me to switch.
>
>
Heh - that reminds me. I don't think anyone has asked what your
hardware is :)
I see
I didn't get any e-mail yesterday so I don't have the options from kirk. I
will try what you said here tonight.
cm
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Stephen Wille
Padnos
Sent: Thursday, August 23, 2007 12:46 PM
To: Enhanced Machine Controlle
The ubuntu logo does not show up. The pc has over 600mb of RAM and is
running two 500mhz intels. It boots windows xp disk w/no problems. I think
bill gates doesn't want me to switch.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Sebastian
Kuzminsky
Sent:
Chris Mason wrote:
>Kirk,
>
>I now have a cd that works. It boots on one pc but not the one I want to use
>it on. The problematic pc just goes to a blank screen as soon as the boot
>sequence starts. I have formatted the hard drive on this pc and it was
>having registry problems before...windows xp
"Chris Mason" <[EMAIL PROTECTED]> wrote:
> I now have a cd that works. It boots on one pc but not the one I want to use
> it on. The problematic pc just goes to a blank screen as soon as the boot
> sequence starts. I have formatted the hard drive on this pc and it was
> having registry problems bef
Hi folks, I'm new here. My name is Sebastian Kuzminsky, I live
in Boulder, Colorado. I'm a software guy with a little electronics
experience. For my day job I do mostly kernel and network programming
in Linux.
I'm just starting to play around with machine tools and CAD software.
I've cut some m
Kirk,
I now have a cd that works. It boots on one pc but not the one I want to use
it on. The problematic pc just goes to a blank screen as soon as the boot
sequence starts. I have formatted the hard drive on this pc and it was
having registry problems before...windows xp. So my problem is specifi
My first pass on getting my lathe turret working went okay. It turns out
that shell scripts are way too slow for what I was trying to do.
The plan was to, using an M101 script, energize the rotator solenoid,
which raises the turret table and starts it rotating. I then monitor the
four bit binary
Gentlemen,
That is the fix.
thank you very much! :) :)
Stuart
-
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files us
On Thu, Aug 23, 2007 at 08:51:09AM -0500, Sam Sokolik wrote:
> The lower you have your acceleration set - the more you will see emc2
> 'blending'
> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl
>
> If you want it to be exact path you need to use G61. This will
> stop at every end
The lower you have your acceleration set - the more you will see emc2 'blending'
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TrajectoryControl
If you want it to be exact path you need to use G61. This will stop at every
endpoint and follow the path exactly. You could do a G64 Px.xxx where x.xxx
I have also noticed a slightly similar thing but in a different context.
I have a script in which a cut is made by the Y axis then this returns
by means of a G0 and the work is turned by the A axis. The A axis always
starts to move just before the Y axis stops. This is on a basic stepper
machin
> Date: Wed, 22 Aug 2007 16:28:19 -0400
> From: "Chris Mason" <[EMAIL PROTECTED]>
> Subject: [Emc-users] help
> To:
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset="us-ascii"
>
> To all,
>
> I have downloaded the live cd successfully..according to the mdsum
> check and
> ev
Jon Elson wrote:
> Gene Heskett wrote:
>> On Tuesday 21 August 2007, Jon Elson wrote:
>I think with a hollow electrode with a drip feed
>>> scheme through the electrode it would go a lot faster.
>>
>> Theres always that 'yabut' Jon, in this case yabut where can I find one of
>> those? :)
How
Hi all,
I use the EMC 2.1.6 with a Bridgeport style, three axis BLDC servo system.
The servos are digital types with own position loops. Two parports, software
PID loops and freqgen used, see that picture
http://www.upload-images.net/imagen/390bf13788.jpg for more.
I use this G code to test:
G92
Well, it is hard to say, I think there is a limit to the base period (at
least I saw that in my machines) and it is about 1 to 15000 ns. If I
decrease it, everything froze. Said that, an approximated formula that gives
you an idea of the needed base period is:
BASE_PERIOD = 1 / ( INPUT_SCA
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