Re: [Emc-users] Homing and f-error

2007-06-16 Thread Jon Elson
Ray Henry wrote:
> It could also be me reading it wrong.  I had an issue trying to home
> using a shared limit pin.  The one axis I was homing was fine but all
> the others would fault.  No way around it after the ignore limit code
> was made single axis.
If the limit switches are shared, then the first axis must be 
moved off the limit switch before the 2nd axis can search for 
home, then again for the 3rd axis.  Just setting the home 
position to a large enough non-zero value should accomplish that.

> Long ago we found that motion stuttered during homing.  Some sort of
> pause in the motion while EMC looked at the home pin.  If this is still
> the case, it might cause the increased following error that was
> observed.
No pause anymore.  There is a bit of a glitch, at least on some 
encoder counter schemes, when the encoder count is suddenly set 
to zero by the index pulse.  It is pretty small, as the driver 
masks most of the discontinuity.

Missed you at the CNC Workshop!

Jon

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Re: [Emc-users] gcode output for xfig

2007-06-16 Thread Till Harbaum / Lists
Hi,

get a alpha test version without layer/depth support here:
http://www.harbaum.org/till/cnc/

I am not sure if i'll do much more on this version until i get my own mill ...

Till

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Re: [Emc-users] gcode output for xfig

2007-06-16 Thread Andrea Montefusco
Till Harbaum / Lists wrote:
> Hi,
> 
> since i couldn't find any simple gcode editor and since i wanted to do some
> simple tests i started to add some gcode output for xfig/fig2dev.
> 
> Up to now (after two hours work) only straight lines are supported (and thus 
> polygons and everything that's composed of lines), but adding more features 
> shouldn't be too difficult.
> 
> I wondering if i am doing a useless job since someone else already did this 
> or 
> there's some other editor i am missing. Do you know of something as simple as 
> xfig being able to write gcode? Do you think such an xfig patcg would be a 
> useful contribution?
> 
> For future versions i am e.g. thinking about using the "line width" of xfig 
> to 
> select tools and the layers of xfig for different z-values. Do you think this 
> makes sense? If there something the color or line style could be mapped to?

Great idea !
xfig allow to associate comment to single object or group of object
(COMPUND).
Its possible associate CNC info here.
If you need a tester I am here.
I have a working CNC machine (EMC2 driven of course) for real tests.

   *am*

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Andrea Montefusco   [EMAIL PROTECTED]
tel: +393356992791 fax: +390623318709
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Re: [Emc-users] gcode output for xfig

2007-06-16 Thread Till Harbaum / Lists
Hi,

Am Donnerstag 14 Juni 2007 schrieb Ben Dugan:
> I think this does make sense, particularly if you mean, for example,
> that endmill diameters would be shown with correctly matched linewidths.
> It would be neat if users could somehow set what the depth (in real
> units) is for each indexed depth.
Currently the line width is directly mapped to the tool index and the depth
isn't yet used at all. But i plan to make both somehow configurable, so you
can make both match your needs. Perhaps a simple translation table will
be fine in both cases. But i am not sure if i'll make this configurable inside
xfig as i am not sure if i want to dig that deep into xaw (the gui lib xfig is 
using) programming. Perhaps it'll just be configurable by an external config 
file.

Till

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Re: [Emc-users] gcode output for xfig

2007-06-16 Thread Till Harbaum / Lists
Hi,

Am Donnerstag 14 Juni 2007 schrieb Ben Dugan:
> I'd love to be tester for this if you need one!
I have just switched to a debian/ubuntu package with my
xfig tests and i'll soon prepare a package for you to test.

A dapper package is fine, isn't it?

Till


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