[Gta04-owner] Advance OpenStreetMap surveying with GTA04? / batteries

[NeilBrown]

On Mon, 19 Mar 2012 07:44:42 +0100 Gerhard Rieger
<freerunner at dest-unreach.org> wrote:

> I assembled a 4 AA based box from standard parts purchased at an
> electronic market (Conrad; battery holder with wires, box, USB
> connector). It just provides the voltage on the two USB power pins, the
> others are not connected. It works great with GTA02 however fails with
> commercial handys, probably because they required defined levels or even
> communication on the data pins.
> 
> How will GTA04 charging logic take this?

The current 3.2 kernel will try to draw 600mA from anything that presents
about 5V on the power line.

This might change - I don't know.

> 
> Does anybody know what best (and simple) to do with the data pins?

Shorting the data pins together is probably the most correct thing to do.

Unfortunately there are a wealth of standards and some of them conflict.

NeilBrown



> 
> - Gerhard
> 
> On 2012-03-19 04:53, Jonathan Wilson wrote:
> > One idea that might work (if there is one suitable for the GTA04)
> > would be to buy one of those things that takes normal AA or similar
> > batteries and is able to charge the phone up from that. I know they
> > exist, I just dont know if they exist in a form that would be
> > compatible with (or provide enough juice for) the GTA04
> > _______________________________________________
> > Gta04-owner mailing list
> > Gta04-owner at goldelico.com
> > http://lists.goldelico.com/mailman/listinfo/gta04-owner
> 
> _______________________________________________
> Gta04-owner mailing list
> Gta04-owner at goldelico.com
> http://lists.goldelico.com/mailman/listinfo/gta04-owner

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 828 bytes
Desc: not available
URL: <http://lists.goldelico.com/pipermail/gta04-owner/attachments/20120319/e1ae0fe4/attachment-0001.bin>