kicad-developers team mailing list archive

[Pierre Parent <pierre.parent@xxxxxxxxxxxxx>]

Hi,

>before your patch,  you can measure the current length of tracks
My purpose is not to replace this feature but to allow to create easely zig-
zags in order to tune length even in restricted space.  I you try to match 
length by hand in 45 degree mode you loose an incredible amount of space, 
which in many cases cannot be afforded.

> it gives you the length of
> a segment rather than the entire track.  I have not mastered it, or there's
> a minor bug, wasn't sure.
I happens when you have multiple collinear segments in your track. This bug is 
kind of annoying...

Pierre.


Le mercredi 16 avril 2014, 13:59:07 Dick Hollenbeck a écrit :
> Pierre,
> 
> I can use this feature on about 1/2 of all the boards we are currently
> doing, so it is a useful feature.
> 
> I think now, before your patch, you can measure the current length of
> tracks, but it is not interactive, and sometimes it gives you the length of
> a segment rather than the entire track.  I have not mastered it, or there's
> a minor bug, wasn't sure.
> 
> 
> In any case yours will be a useful improvement.
> 
> 
> Dick
> 
> On 04/16/2014 01:33 PM, Pierre Parent wrote:
> > Hi,
> > 
> > I've sent to production my first length matched board, here is a picture!
> > I
> > hope it will work!
> > 
> > I've looked at the branch drawing tool. It seems pretty accessible. I'll
> > try to do it when I have time. There are also improvements I would like
> > to make to the length tuning tool.
> > 
> > Pierre.
> > 
> > Le samedi 12 avril 2014 21:03:51, vous avez écrit :
> >> On 04/11/2014 06:44 PM, Pierre Parent wrote:
> >>> Hi,
> >>> 
> >>> Im' new here. My name is Pierre. I've started to develop for kicad a
> >>> tool
> >>> for trace length tunning.
> >>> 
> >>> Trace length tunning is an important tool which is lacking when
> >>> designing
> >>> more complex boards in particular board with DDR/DDR2/DDR3 ram. For
> >>> example the board olinuxino imx 233 maxi, which is open hardware uses
> >>> length tunned traces in Eagle. It is currently completely impossible to
> >>> do similar thing with kicad even when spending lot of time on it.
> >>> 
> >>> A bug was filled by other users:
> >>> https://bugs.launchpad.net/kicad/+bug/594089
> >>> 
> >>> So my initial development was to stop the bleeding, and obviously it is
> >>> very early version which can largely be improved in usability. Though
> >>> for
> >>> my use it is already suitable for DDR ram routing. Here are first
> >>> results:
> >>> https://www.youtube.com/watch?v=yWJyGpkZ6k4
> >>> https://www.youtube.com/watch?v=UdQ-2EnWNkw
> >>> 
> >>> I would appreciate any feedback, and advice. Do you think I should do a
> >>> branch with my code (still buggy)? Also I think it would be nice to get
> >>> it working with new component view, I don't think it would be hard. Has
> >>> the microwave toolbox started to be ported? (it would give me an
> >>> example).
> >>> 
> >>> I think it would be good to make sure a length tunning tool (even
> >>> minimal)
> >>> is available in next kicad release, because it simply prevents to use
> >>> kicad to design certain kind of boards.
> >>> 
> >>> Pierre.
> >> 
> >> Hi Pierre,
> >> 
> >> I have seen your work presented in the bug report that you have created
> >> before. It looks quite impressive, it is great to have more people
> >> working on KiCad. I think the best way would be to integrate your code
> >> with the Push and Shove router.
> >> Currently, the microwave toolbox is not ported to the Tool Framework,
> >> but all the other tools are already there. If you would like to have a
> >> look on the code, the most interesting places are in the branch
> >> lp:~cern-kicad/kicad/drawing_tool:
> >> - the Tool Framework itself is located in common/tool
> >> - tools for pcbnew are in pcbnew/tools
> >> An example of initial steps to create a tool is available here:
> >> https://bazaar.launchpad.net/~cern-kicad/kicad/drawing_tool/revision/4667
> >> .
> >> If you need any help writing the tool using the framework, please do not
> >> hesitate to ask - we are glad to help.
> >> I have started writing a tutorial on creating new tools using the Tool
> >> Framework, but then I realized that there are still ongoing changes and
> >> it could become obsolete too early. Maybe now it is the right time to
> >> finish it.
> >> 
> >> Regards,
> >> Orson
> >> 
> >> 
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