[Gta04-owner] GTA04-Custom: EAGLE schematics and board file blueprint for developing expansion/adapter boards

Dr. H. Nikolaus Schaller hns at goldelico.com
Fri Mar 2 10:47:09 CET 2012

Am 02.03.2012 um 10:29 schrieb Davide Scaini:

> this is funny...
> you can use the same argument for windows.
> So GTA04 is not totally free snd then we can all buy an huawey+android phone...

If you think huawey+android is free enough for you...
Get one and try to design an adapter board for a different display. Good luck :)

The GTA04 is not completely free hardware (and was never intended to become).
It's main feature is that it is well enough documented so that it can run completely
free software. And it does not even reach this goal completely (WiFi driver, SGX driver).


> Bye
> d
> On Fri, Mar 2, 2012 at 10:25 AM, Dr. H. Nikolaus Schaller <hns at goldelico.com> wrote:
> Am 02.03.2012 um 10:04 schrieb Timo Juhani Lindfors:
> > "Dr. H. Nikolaus Schaller" <hns at goldelico.com> writes:
> >> As far as I know, EAGLE 6 has a new XML format. So it should be possible
> >> to convert the file using the free (beer) version to XML. And from there to
> >> any tool of interest.
> >
> > Ok. The summary seems to be that if somebody wants to see the GTA04
> > schematics they have to use non-free software, at least for the initial
> > conversion step.
> No, I would not conclude that. One just needs to develop a file import
> converter for any free CAD software, if it does not yet exist. OpenOffice
> or LibreOffice e.g. has no problem reading Word/Excel/Powerpoint files.
> Or use the free(-beer) EAGLE once to do the conversion for the benfit of
> all. We can upload any converted files to the same server.
> Another question is why we use EAGLE for development. That
> has several reasons. One is that we have it, we know it, we know
> its bugs and limitations, it works, it is stable, we have a big component
> library.
> But the key argument is that it is challenging enough to develop
> a GTA04 so that we simply don't want to develop/change tools unless
> necessary because lack of functionality. We simply want to use
> them and keep away from potential problems that don't improve the
> result. The GTA04 would look exactly the same if it were developed by
> using different tools...
> Nikolaus
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