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From:	"Erich Heinzle (a1039181 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date:	Fri, 8 Nov 2019 15:50:30 +1030
Message-ID:	<CAHUm0tOEr-vp-Dpur+Q2uF2Ca1qvB59rSdk20=8sa8y3xeSv_w@mail.gmail.com>
Subject:	Re: [geda-user] PCB jpg to silkscreen
To:	geda-user <geda-user AT delorie DOT com>
Reply-To:	geda-user AT delorie DOT com

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Other ways to proceed include

1) https://github.com/erichVK5/image2footprint

Also discussed at

http://vk5hse.blogspot.com/2016/05/adding-images-to-silkscreen-in-geda-pcb.html

2) svg2mod, which will produce a kicad footprint that pcb-rnd can load.
Polygons in the footprint may not work with gEDA PCB though

3) just load the image directly into pcb-rnd, also discussed at

http://vk5hse.blogspot.com/2017/04/bitmap-import-now-supported-by-pcb-rnd.html?m=1

4) with respect to qr-codes, pcb-rnd supports parametric qr code and bar
code insertion too:

http://repo.hu/cgi-bin/pool.cgi?cmd=show&node=qr

Cheers,

Erich



On Fri, 8 Nov 2019 10:51 Larry Doolittle (ldoolitt AT recycle DOT lbl DOT gov) [via
geda-user AT delorie DOT com], <geda-user AT delorie DOT com> wrote:

> Rob -
>
> On Thu, Nov 07, 2019 at 05:07:40PM -0500, Rob Butts (
> r DOT butts DOT geda AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
> > I searched online for a way to convert a jpg (logo) to a PCB
> silkscreen.  I
> > found only one convoluted way using Inkscape and pstoedit.  I got
> inkscape
> > to work fine but pstoedit is failing.
> > Is there another way to convert a jpg to silkscreen?
>
> I've generated Gerber files with QR codes on them,
> and then had boards fabbed where the result (on a silkscreen layer)
> is easily readable with a phone app.
>
> The python-managed toolchain is:
>    qrtools.QR()  makes a .png
>    scipy.ndimage.imread() reads the .png
>    create a gEDA .pcb file header from a template
>    emit one polygon per pixel (or not, the .png is black&white)
>    close out the .pcb file
>    run pcb -x gerber on that .pcb file
> If anyone wants to see this, contact me by PM.
>
>   - Larry
>

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<div dir=3D"auto"><div>Other ways to proceed include<div dir=3D"auto"><br><=
/div><div dir=3D"auto">1)=C2=A0<a href=3D"https://github.com/erichVK5/image=
2footprint">https://github.com/erichVK5/image2footprint</a></div><div dir=
=3D"auto"><br></div><div dir=3D"auto">Also discussed at</div><div dir=3D"au=
to"><br></div><div dir=3D"auto"><a href=3D"http://vk5hse.blogspot.com/2016/=
05/adding-images-to-silkscreen-in-geda-pcb.html">http://vk5hse.blogspot.com=
/2016/05/adding-images-to-silkscreen-in-geda-pcb.html</a><br></div><div dir=
=3D"auto"><br></div><div dir=3D"auto">2) svg2mod, which will produce a kica=
d footprint that pcb-rnd can load. Polygons in the footprint may not work w=
ith gEDA PCB though</div><div dir=3D"auto"><br></div><div dir=3D"auto">3) j=
ust load the image directly into pcb-rnd, also discussed at</div><div dir=
=3D"auto"><br></div><div dir=3D"auto"><a href=3D"http://vk5hse.blogspot.com=
/2017/04/bitmap-import-now-supported-by-pcb-rnd.html?m=3D1">http://vk5hse.b=
logspot.com/2017/04/bitmap-import-now-supported-by-pcb-rnd.html?m=3D1</a><b=
r></div><div dir=3D"auto"><br></div><div dir=3D"auto">4) with respect to qr=
-codes, pcb-rnd supports parametric qr code and bar code insertion too:</di=
v><div dir=3D"auto"><br></div><div dir=3D"auto"><a href=3D"http://repo.hu/c=
gi-bin/pool.cgi?cmd=3Dshow&amp;node=3Dqr">http://repo.hu/cgi-bin/pool.cgi?c=
md=3Dshow&amp;node=3Dqr</a><br></div><div dir=3D"auto"><br></div><div dir=
=3D"auto">Cheers,</div><div dir=3D"auto"><br></div><div dir=3D"auto">Erich<=
/div><div dir=3D"auto"><br></div><br><br><div class=3D"gmail_quote"><div di=
r=3D"ltr" class=3D"gmail_attr">On Fri, 8 Nov 2019 10:51 Larry Doolittle (<a=
 href=3D"mailto:ldoolitt AT recycle DOT lbl DOT gov">ldoolitt AT recycle DOT lbl DOT gov</a>) [vi=
a <a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>], &lt;=
<a href=3D"mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>&gt; wrot=
e:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex">Rob -<br>
<br>
On Thu, Nov 07, 2019 at 05:07:40PM -0500, Rob Butts (<a href=3D"mailto:r.bu=
tts DOT geda AT gmail DOT com" target=3D"_blank" rel=3D"noreferrer">r DOT butts DOT geda AT gmail=
.com</a>) [via <a href=3D"mailto:geda-user AT delorie DOT com" target=3D"_blank" r=
el=3D"noreferrer">geda-user AT delorie DOT com</a>] wrote:<br>
&gt; I searched online for a way to convert a jpg (logo) to a PCB silkscree=
n.=C2=A0 I<br>
&gt; found only one convoluted way using Inkscape and pstoedit.=C2=A0 I got=
 inkscape<br>
&gt; to work fine but pstoedit is failing.<br>
&gt; Is there another way to convert a jpg to silkscreen?<br>
<br>
I&#39;ve generated Gerber files with QR codes on them,<br>
and then had boards fabbed where the result (on a silkscreen layer)<br>
is easily readable with a phone app.<br>
<br>
The python-managed toolchain is:<br>
=C2=A0 =C2=A0qrtools.QR()=C2=A0 makes a .png<br>
=C2=A0 =C2=A0scipy.ndimage.imread() reads the .png<br>
=C2=A0 =C2=A0create a gEDA .pcb file header from a template<br>
=C2=A0 =C2=A0emit one polygon per pixel (or not, the .png is black&amp;whit=
e)<br>
=C2=A0 =C2=A0close out the .pcb file<br>
=C2=A0 =C2=A0run pcb -x gerber on that .pcb file<br>
If anyone wants to see this, contact me by PM.<br>
<br>
=C2=A0 - Larry<br>
</blockquote></div></div></div>

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