Reason for GPS problems found!

Joachim Steiger roh at
Wed Jul 16 05:24:13 CEST 2008

Yaroslav Halchenko wrote:
> Are the schematics / boarding scheme (not sure on english term) released
> 'open source' as well? or just CAD files?

currently not.

one can get the schems under nda as far i know (like all the
'external-internal' engineers and contractors of openmoko)
this has 3rd party rights, as well as company-political reasons, which i
as a techie cannot reasonably explain ;)
e.g. the gsm part will propably be a 3rd party rights thing and thus
stay a blackbox even when OM decides to publish the schems some day.

> I don't have an actual unit yet, so I am basing only from visual
> inspection and I am not sure how GPS antenna itself is positioned in
> respect to SD but can't be too far (unfortunately)

currently it looks like the sd_clk could be the source of some rf-noise.
the guys in EE and sw are working hard on a fix.

be assured that there will be some statement when we finally know how to
kill this bug for good ourselves.
as joerg wrote: please be patient
i count a weekend and 2-3 days (depending on your timezone) which it
took to come to this point. not much time.

kind regards.


Joachim Steiger
Openmoko Central Services

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