Mailing list archives : pcb-rnd

ID:4250
From:Erich Heinzle <a1...@gmail.com>
Date:Tue, 7 Jul 2020 17:06:44 +0930
Subject:Re: [pcb-rnd] rf filter test data
in-reply-to:4246 from Evan Foss <ev...@gmail.com>
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I am pretty sure their drc does not cope with arcs.
 
All of the tools I have seen to date approximate them with line segments.
 
Regards,
 
Erich.
 
On Mon, 6 Jul 2020 14:54 Evan Foss, <evanfoss@gmail.com> wrote:
 
> On Sun, Jun 21, 2020 at 2:16 AM <gedau@igor2.repo.hu> wrote:
> >
> > Hi Evan,
> >
> > On Sun, 21 Jun 2020, Evan Foss wrote:
> >
> > >Hi Fellow Pcb-RNDrs
> > >
> > >I asked this person who is doing simulator testing if they could share
> > >their validation data and they did!
> > >https://twitter.com/ElectronicsbyJH/status/1273114195987488769
> > >They also have tests of connector insertion loss.
> > >https://twitter.com/ElectronicsbyJH/status/1271589349017243648
> >
> > Cool!
> >
> > >Also: is it just me or is kicad really behind UI wise?
> > >https://www.reddit.com/r/TheAmpHour/comments/hazb79/rf_tools_for_kicad/
> >
> >
> > I think that video shows an addon, probably something like what we would
> > have in an user script in pcb-rnd.
> >
> > To me, as I wrote in the other mail, this addon looks like a collection
> of
> > very much specialised tools, not a generic toolbox - for creating your RF
> > transmission line.
> >
> > (In theory we could write a similar script, if there's strong user demand
> > on that. It wouldn't be very hard to map a trace you click, then draw a
> > mask opening above it or draw two line-of-vias around it and set
> > attributes so we could pick them up later for editing. I guess it'd all
> > be some few 100 lines of script with all the GUI dialogs included. I am
> > just not sure we have active user demand for this already - I mean I
> > write a lot of scripts, even upon user request, and I am not sure users
> > then really use those scripts at all or revert back manually doing
> > everything!)
> >
> > So I think it's not about kicad UI in general, it's only about a specific
> > addon's offer. Then whether kicad supports real arcs on copper or it is
> > just line approximation, whether kicad has native UI for drawing them,
> > whether that is more efficient than opening a dialog box for each arc,
> are
> > the real UI questions, but we won't figure that from this video.
>
> Not that I care about kicad that much or that I suggest we follow them
> but this is what kicad's are support will look like soon.
>
> https://twitter.com/pdp7/status/1278828265994686464
>
> But like you said it could still be fake in that they could be storing
> the arcs as improperly as you suggest.
>
> > Regards,
> >
> > Igor2
> >
> >
>
>
> --
> https://github.com/evanfoss
>
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<div dir=3D"auto">I am pretty sure their drc does not cope with arcs.<div d=
ir=3D"auto"><br></div><div dir=3D"auto">All of the tools I have seen to dat=
e approximate them with line segments.</div><div dir=3D"auto"><br></div><di=
v dir=3D"auto">Regards,</div><div dir=3D"auto"><br></div><div dir=3D"auto">=
Erich.</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"=
gmail_attr">On Mon, 6 Jul 2020 14:54 Evan Foss, &lt;<a href=3D"mailto:evanf=
oss@gmail.com">evanfoss@gmail.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">On Sun, Jun 21, 2020 at 2:16 AM &lt;<a href=3D"mailto:gedau@i=
gor2.repo.hu" target=3D"_blank" rel=3D"noreferrer">gedau@igor2.repo.hu</a>&=
gt; wrote:<br>
&gt;<br>
&gt; Hi Evan,<br>
&gt;<br>
&gt; On Sun, 21 Jun 2020, Evan Foss wrote:<br>
&gt;<br>
&gt; &gt;Hi Fellow Pcb-RNDrs<br>
&gt; &gt;<br>
&gt; &gt;I asked this person who is doing simulator testing if they could s=
hare<br>
&gt; &gt;their validation data and they did!<br>
&gt; &gt;<a href=3D"https://twitter.com/ElectronicsbyJH/status/127311419598=
7488769" rel=3D"noreferrer noreferrer" target=3D"_blank">https://twitter.co=
m/ElectronicsbyJH/status/1273114195987488769</a><br>
&gt; &gt;They also have tests of connector insertion loss.<br>
&gt; &gt;<a href=3D"https://twitter.com/ElectronicsbyJH/status/127158934901=
7243648" rel=3D"noreferrer noreferrer" target=3D"_blank">https://twitter.co=
m/ElectronicsbyJH/status/1271589349017243648</a><br>
&gt;<br>
&gt; Cool!<br>
&gt;<br>
&gt; &gt;Also: is it just me or is kicad really behind UI wise?<br>
&gt; &gt;<a href=3D"https://www.reddit.com/r/TheAmpHour/comments/hazb79/rf_=
tools_for_kicad/" rel=3D"noreferrer noreferrer" target=3D"_blank">https://w=
ww.reddit.com/r/TheAmpHour/comments/hazb79/rf_tools_for_kicad/</a><br>
&gt;<br>
&gt;<br>
&gt; I think that video shows an addon, probably something like what we wou=
ld<br>
&gt; have in an user script in pcb-rnd.<br>
&gt;<br>
&gt; To me, as I wrote in the other mail, this addon looks like a collectio=
n of<br>
&gt; very much specialised tools, not a generic toolbox - for creating your=
 RF<br>
&gt; transmission line.<br>
&gt;<br>
&gt; (In theory we could write a similar script, if there&#39;s strong user=
 demand<br>
&gt; on that. It wouldn&#39;t be very hard to map a trace you click, then d=
raw a<br>
&gt; mask opening above it or draw two line-of-vias around it and set<br>
&gt; attributes so we could pick them up later for editing. I guess it&#39;=
d all<br>
&gt; be some few 100 lines of script with all the GUI dialogs included. I a=
m<br>
&gt; just not sure we have active user demand for this already - I mean I<b=
r>
&gt; write a lot of scripts, even upon user request, and I am not sure user=
s<br>
&gt; then really use those scripts at all or revert back manually doing<br>
&gt; everything!)<br>
&gt;<br>
&gt; So I think it&#39;s not about kicad UI in general, it&#39;s only about=
 a specific<br>
&gt; addon&#39;s offer. Then whether kicad supports real arcs on copper or =
it is<br>
&gt; just line approximation, whether kicad has native UI for drawing them,=
<br>
&gt; whether that is more efficient than opening a dialog box for each arc,=
 are<br>
&gt; the real UI questions, but we won&#39;t figure that from this video.<b=
r>
<br>
Not that I care about kicad that much or that I suggest we follow them<br>
but this is what kicad&#39;s are support will look like soon.<br>
<br>
<a href=3D"https://twitter.com/pdp7/status/1278828265994686464" rel=3D"nore=
ferrer noreferrer" target=3D"_blank">https://twitter.com/pdp7/status/127882=
8265994686464</a><br>
<br>
But like you said it could still be fake in that they could be storing<br>
the arcs as improperly as you suggest.<br>
<br>
&gt; Regards,<br>
&gt;<br>
&gt; Igor2<br>
&gt;<br>
&gt;<br>
<br>
<br>
-- <br>
<a href=3D"https://github.com/evanfoss" rel=3D"noreferrer noreferrer" targe=
t=3D"_blank">https://github.com/evanfoss</a><br>
<br>
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</blockquote></div>
 
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Reply subtree:
4250 Re: [pcb-rnd] rf filter test data from Erich Heinzle <a1...@gmail.com>