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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: Sun, 5 Mar 2017 15:21:36 +1030
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Subject: Re: [geda-user] Layout data for Raspberry Pi B 3.5" TFT Touch screen
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Precedence: bulk

And here's a last crack at it.

If you want to play with this in a default PCB build, you'll need to
strip out excess layers, of increase the maximum layer count (i.e. to
32) for PCB and rebuild, since it comes with 16 copper layers plus
edge cuts, silk and so forth.

All the elements have been converted, as well as the outline, but pad
rotation has not been done within elements or for footprints as a
whole. That's a job for another day.

http://users.on.net/~esh/geda/AdafruitTouchScreenExtractPrelim3.pcb

pcb-rnd doesn't export styles[] in a layout if there are non defined
for a layout. Mainline has a hardwired number of them.

The biggest problem with these workflows is that Eagle puts some quite
pathological stuff in text fields. The translate2geda utility also had
to work around some of these eagle oddities too.

On a positive note, the kicad import module in pcb-rnd is now more robust!

Cheers,

Erich.

On Sun, Mar 5, 2017 at 10:14 AM, Erich Heinzle <a1039181 AT gmail DOT com> wrote:
> I've refined the conversion code somewhat, and have now done a version
> of the Adafruit layout with embedded elements.
>
> Kicad exports the eagle layout in kicad format with quite a few rare
> fields, as well as oddities such as empty layer defs for some
> features, and embedded text fields in the file like:
>
> textThing""
>
> (!) that break naive conversion efforts.
>
> Having worked around these in my second go at it, I present a revised
>
> http://users.on.net/~esh/geda/AdafruitTouchScreenExtractPrelim2.pcb
>
> This should give you a better idea of component placement on the
> AdaFruit version, but in the absence of design files for the ebay
> one.... not much I can do there.
>
> Note that the SMD pads have not been 90 degree rotated in the 26 pin
> footprint - I am yet to implement per pad rotation during conversion
> when importing these rarer kicad features into pcb-rnd.
>
> The translate2geda utility will produce an essentially lossless
> footprint, and implement rotation of pads, however, so that is still
> worth trying.
>
> Cheers,
>
> Erich.
>
> On Sun, Mar 5, 2017 at 7:06 AM, Rob Butts (r DOT butts2 AT gmail DOT com) [via
> geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
>> No, I'm looking for the 26 pin header on the following display
>>
>> http://www.ebay.com/itm/For-Raspberry-Pi-3-2-TFT-LCD-Display-Kuman-3-5-Inch-480x320-TFT-Touch-Screen-Mo-/302171452717?
>>