<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>Am 05.04.2013 um 12:18 schrieb Boudewijn:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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<div class="moz-cite-prefix">On 5-4-2013 10:56, Sven Dyroff wrote:<br>
</div>
<blockquote cite="mid:OF6B4A21C5.E0D6EF66-ONC1257B44.002EA384-C1257B44.003120C9@phytec.de" type="cite"><font face="sans-serif" size="2">Hmmm, slowly I get an
idea what the
secret behind its success could be. It's not the device itself.
It's not
to have the "eierlegende Wollmilchsau" (German term for an
all-in-one
device suitable for every purpose). No, the essential point is
the design
of the interfaces and their usability that the device has. As
far as I
can remember over all previous discussions within this list,
this point
never had been expressed when describing the benefits of the
GTA04.</font>
<br></blockquote></div></blockquote><div><br></div>something like this list: <a href="http://projects.goldelico.com/p/gta04-main/page/FactsAndReasons/">http://projects.goldelico.com/p/gta04-main/page/FactsAndReasons/</a></div><div><br><blockquote type="cite"><div text="#000000" bgcolor="#FFFFFF"><blockquote cite="mid:OF6B4A21C5.E0D6EF66-ONC1257B44.002EA384-C1257B44.003120C9@phytec.de" type="cite">
</blockquote>
Sounds as "the unix way": one thing, do it well, with clearly
defined and accessible interfaces. Only, it _would_ be nice if it
laid eggs. <br>
<blockquote cite="mid:OF6B4A21C5.E0D6EF66-ONC1257B44.002EA384-C1257B44.003120C9@phytec.de" type="cite">
<font face="sans-serif" size="2">So if in addition GD spends an
easy
to use I2C-port to the GTA04A5 - IIRC already announced at least
for use
with external keyboards - and perhaps some other nicely to use
interfaces,
that could be *the* killing marketing argument. Especially if
they are
also available when using an recycled Freerunner case with only
one or
two more hand-drilled holes within it... ;-))</font>
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We can _at least_ design some Lego-compatible knobs on the backplate
or sides.<br></div></blockquote><div><br></div>:)</div><div><br><blockquote type="cite"><div text="#000000" bgcolor="#FFFFFF">
<br>
AA-batteries have been mentioned more often. I'd also like that;
three of them supply 3.6V and are easily sourced up to (to my
knowledge) 2900 mAh for NiMH. Never saw li-ion AA batteries at 1.2V
though but didn't spend much time searching for them. Alibaba goes
over 3000mAh for AA batteries, but I imagine them "incorrectly
labeled" or having a larger diameter than usually.<br>
<br>
Are we bound to 3.7V for input, by the way? Most telephones I know
use it, but not all our components use 3.7V so we have to step up or
down anyway.<br></div></blockquote><div><br></div>There are built-in step-down converters in the TPS65950 anyways. The 3.7V battery interface is optimized for LiIon batteries and accepts up to 4.2 V but there is no problem connecting 3 x 1.2V NiMh Cells. Except mechanics (AA cells are much bigger) and charging...</div><div><br></div><div>A minor issue is that GSM/UMTS needs a power supply capable of providing high pulse currents (up to 2 Amperes). But that can be addressed by buffer capacitors.</div></body></html>