Ya (or Mu suggestions)

David Reyes Samblas Martinez david at tuxbrain.com
Fri Jul 31 05:39:02 EDT 2009


+1 to standar A connector,
 or at least include a whatever-to-standard A conector in the box

2009/7/30 Bas Wijnen <wijnen at debian.org>:
>> > > which type of connector would you prefer for the USB host?  Most
>> > > devices I have seen use mini-B for USB host function.  The
>> > > standard female type A (like on a notebook) is also possible I
>> > > guess, but I'm not sure whether it would fit on such a small
>> > > device or how it would look like.
>> >
>> > I will be happy with mini-B, as in Freerunner.
>> >
>> +1 (due to the place and that weird extension pack idea (would be great to
>> have usb testpoints onboard, though ;) )
>
> I would be quite unhappy with mini-B, actually.  The standard says that
> standard A or micro-A should be used.  Obviously standard A is way too
> large.
>
> I don't care much about which connector is used, and using one that
> others use is a good idea in general.  But USB connectors have been
> cleverly designed.  It is impossible to blow up your device by
> connecting power sources together, because type A connectors are power
> sources, while type B connectors are power sinks (users).  The standard
> A to mini-B cables are used everywhere, for example to connect card
> readers.  It is a very good plug for the USB device function; it is
> really bad for the host function.
>
> According to wikipedia the recommendation to use micro-A as host-plug
> for small devices (actually for on-the-go devices) is supported by
> important parties, which means it will likely become a real standard.  I
> don't have enough experience (I haven't ever conciously seen a USB micro
> plug) with this type of devices to know if that claim is true, but I
> suppose others on the list do.
>
> Anyway, using a plug with which you can blow up your device without
> soldering is a very bad idea IMO; even if others do it, too.
>
> Plug issues aside, my wishlist is really only usb host support.  Some
> connectivity could be nice, but it can be delivered over USB as far as
> I'm concerned.
>
> Thanks,
> Bas
>
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-- 
David Reyes Samblas Martinez
http://www.tuxbrain.com
Open ultraportable & embedded solutions
Openmoko, Openpandora,  Arduino
Hey, watch out!!! There's a linux in your pocket!!!




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