Re: [Gumstix-users] Power consumption, gumstix + wifistix ?

[Jesse W. <jes...@gm...>]

Umm Dave did answer one of your questions 2 days ago:
>> 2. I need to access the I2C bus to talk to H Bridge power controller and
other
>> engine stuff, do I need another stix or can I pull the bus off from the
above
>> combination? (this is a lot like a robot guys but it knows where to go
all by
>> itself ;-)
>
>You'll need a card to plug into the 60 pin hirose connector. Probably
>the breakout-gs, or a waysmall daughtercard. Personally, I'd get the
>waysmall, since then you'll have easy access to the console.

As for the power consumption I don't believe it should draw more than 500
miliamps
because IIRC that's the max that any of the regulators  can supply.  Unless
of course
you are using a robostix and a wifistix, then you have to power both but I
don't
think you should need more than 500 miliamps for a
waysmall+gumstix+wifistix.



On 2/18/07, Jeff Tyler <je...@jt...> wrote:
>
> And they seemed like such simple questions ;-)  folks, a little help here
> please?  I really have combed the faqs for #1 and on #2 I guess I'm a
> little
> overwhelemed by the number of choices and combinations.
>
> TIA! ... JT
>
> Jeff Tyler wrote:
>
> > Newbe question alert!  (yes, I have looked at the FAQ/wiki, be gentle
> with me ;-)
> >
> > 1. Aprox power consumption of Gumstix + WiFistix combination?  Yes, I
> know it
> > will vary based on transmitter time/usage, looking for a design
> range.  Mostly
> > listening, talking just to ACK cmds and read registers (apart from
> normal
> > protocol overhead to AP, etc.).
> >
> > second question;
> >
> > 2. I need to access the I2C bus to talk to H Bridge power controller and
> other
> > engine stuff, do I need another stix or can I pull the bus off from the
> above
> > combination? (this is a lot like a robot guys but it knows where to go
> all by
> > itself ;-)
> >
> > Project is for control of G Gauge (outdoor) model railroad engines.  I
> have an
> > existing 16 cell NiMH stack I can draw from [motor power] (as well as
> float
> > power from the rails) but am most likely going to install a separate
> battery
> > stack (4 or 6 cell NiMH) to support Gumstix and comms/control stuff to
> reduce
> > motor noise and avoid regulator wastage.
> >
> > Thanks! ... JT
> >
> >
> >
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-- 
    -Jesse W.