I am trying to work out somebodies problems with kinematics, which is
tricky because it is all a bit of a mystery to me too.
As far as I can see the kinematicsHome function of the active kins is
never called, so am I missing something, or is it irrelevant?
--
atp
The idea that there is no such t
Hello everyone,
I have an 6 dof anthropomorphic robot like Puma but without spherical wirst. I
have written my new kinematic editing pumakins.c and using the standard
equations for a anthropomorphic manipulator (3 DOF) plus direct expressions
like a trivial kinematics for the lastest 3 DOF. I w
>I am trying to work out somebodies problems with kinematics, which is
> tricky because it is all a bit of a mystery to me too.
>
> As far as I can see the kinematicsHome function of the active kins is
> never called, so am I missing something, or is it irrelevant?
Right, it might have been used s
On 20 January 2012 11:29, Francesca Sca wrote:
> Which could be the problem? I think that it may be a conflict between home
> and inverse kinematics.
That was a red-herring. Apparently the kinematicsHome subroutine is
never used, so it can't be that.
--
atp
The idea that there is no such thing
My guess is that you don't have matching kins. Try calculating world position
from joints 0,0,0,0,0,0 (manually)
Then calculate it the other way around and see if you get the initial value.
Regards,
Alez
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andy pugh wrote:
On
Hi,
I suggest you to post here also your .ini file, to see your HOME and
HOME_OFFSET values (as per the PM i sent you.).
My idea (correct me if i'm wrong) is that the home position of one or
more of the joints, conflicts with the real position that the arm can
have.
It happened to me with the inve
On 20 January 2012 16:01, Alex Joni wrote:
> My guess is that you don't have matching kins. Try calculating world
> position from joints 0,0,0,0,0,0 (manually)
That's a little easier said than done, though, as it all feeds through
the pmHomogeneous rotation matrices.
However, I do wonder how the
It probably takes 10 minutes to convert the kinematics file into an userspace
program with a couple printf's.
--
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andy pugh wrote:
On 20 January 2012 16:01, Alex Joni wrote:
> My guess is that you don't have matching kins. Try
On 20 January 2012 16:51, Alex Joni wrote:
> It probably takes 10 minutes to convert the kinematics file into an
> userspace program with a couple printf's.
Probably true, though I would have no idea where to start, and even
less idea how to invoke such a program..
Creating some HAL pins and fol
Just keep it simple.
Add a main function, call kinematicsInverse with the params you want, and print
the results. Then compile and run from a terminal. No LinuxCNC involved.
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
andy pugh wrote:
On 20 January 2012 16:51, Alex Jo
I had a similar problem with a hexapod type machine, and the problem was
precisely what Alex is suggesting.
Good luck,
Javier
On Fri, Jan 20, 2012 at 5:01 PM, Alex Joni wrote:
> My guess is that you don't have matching kins. Try calculating world
> position from joints 0,0,0,0,0,0 (manually)
>
I don't remember pretty well. But may be world 0,0,0,0,... must be
coincident too with joint 0,0,0,0,...
Must be some message from me in the emc-users list.
I found at least this (may be there are some more)
http://www.mail-archive.com/emc-users@lists.sourceforge.net/msg03496.html
Read at
"
Ne
On Thu, Jan 19, 2012 at 12:28:23PM -0500, Kent A. Reed wrote:
> Gentle persons:
>
> Before I disappear for a while, I thought I'd throw out this question
> because there are areas of the Wiki I'd be uncomfortable editing in
> spare moments until I know the answer.
>
> Can I safely assume the ne
On 20 January 2012 18:49, Javier Ros wrote:
> Another possible way to overcome this would be to use kinematics
> module to initialise joint positions from world coordinates, or the
> inverse, and let the ini file to initialize world or joint.
I suspect that this is what the unused kinematicsHome
On Jan 20, 2012, at 11:54 , Jeff Epler wrote:
>
> Right now in the v2.5_branch of development, we have
>linuxcnc[the main program]
>xlinuxcnc [the Xaw-based GUI]
>linuxcncrsh [the program we're talking about now]
>tklinuxcnc [the Tk-based GUI]
>
> unix command names are gen
lcnc?
On Fri, 20 Jan 2012 12:19:38 -0700, Sebastian Kuzminsky wrote:
> On Jan 20, 2012, at 11:54 , Jeff Epler wrote:
>>
>> Right now in the v2.5_branch of development, we have
>>linuxcnc[the main program]
>>xlinuxcnc [the Xaw-based GUI]
>>linuxcncrsh [the program we're talking ab
On 20 January 2012 18:54, Jeff Epler wrote:
> "lcnc" and "lnc" are both used as marketing names by other cnc control
> manufacturers; I'd be pretty reluctant to use these as command names in
> LinuxCNC.
lxcnc?
--
atp
The idea that there is no such thing as objective truth is, quite simply, wro
2012/1/20 EBo :
> lcnc?
Jeff Epler: "lcnc" and "lnc" are both used as marketing names by other
cnc control
Viesturs
--
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On Fri, 20 Jan 2012 21:40:09 +0200, Viesturs Lācis wrote:
> 2012/1/20 EBo :
>> lcnc?
>
> Jeff Epler: "lcnc" and "lnc" are both used as marketing names by
> other
> cnc control
sorry for not doing the market research before hand. With all this
name-branding problem we should use a unique glyph l
I like "cnc" it is generic and short. putting the full name linuxcnc is
needlessly long.
Frank Bufton
From: Sebastian Kuzminsky
To: EMC developers ,
Date: 01/20/2012 01:20 PM
Subject:Re: [Emc-developers] What are the new names of executables and
scripts?
On Jan
On 1/20/2012 2:19 PM, Sebastian Kuzminsky wrote:
> On Jan 20, 2012, at 11:54 , Jeff Epler wrote:
>> Right now in the v2.5_branch of development, we have
>> linuxcnc[the main program]
>> xlinuxcnc [the Xaw-based GUI]
>> linuxcncrsh [the program we're talking about now]
>> tklin
So the problem isn't home value but something about my kinematics? How I can
check this? Alex has suggested a way but it isn'y easy for me...
Francesca
Da: Alex Joni
A: EMC developers
Inviato: Venerdì 20 Gennaio 2012 17:01
Oggetto: Re: [Emc-developers] new
On 20 January 2012 23:35, Francesca Sca wrote:
>
> So the problem isn't home value but something about my kinematics? How I can
> check this? Alex has suggested a way but it isn'y easy for me...
You are not the only one with this problem (as a similar question was
just posted)
I am trying to com
Andy pugh wrote:
>You are not the only one with this problem (as a similar question was
>just posted)
>I am trying to compile your kins to have a fiddle.
>(I have just added it to the makefile)
Ok thank you for the help!! I have found an error in my file kinematics... you
should delete 245.0
Jeff Epler wrote:
> linuxcncrsh [the program we're talking about now]
> tklinuxcnc [the Tk-based GUI]
>
>
>
> If we were to shorten them up, maybe it should be "cnc" in command names
> (xcnc, cncrsh, tkcnc).
>
Those look good to me, the ones above ARE getting a bit long.
Jon
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