Re: [Gumstix-users] Need some pre-sales info/help

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Em Seg, 2010-02-22 às 21:46 -0500, Scott Wilhelm (HireAWebGeek.com)
escreveu:
> > > 2.      Regarding the programming of the board
> ....................
> > Both COMs(Overo and Verdex Pro) can boot through microSD cards, which
> > is
> > easier(and faster) IMO than serial port boot.
> 
Yes. You can remove packages from the console-image(the smallest image
available) and edit /etc/network/interfaces. I'm not sure about this,
though.
Boards that have Ethernet ports can also boot via TFTP over a network.
> 
> 
> > > b.      Do I need a cable to connect to it?
> > Yes, of course.
> 
> Yes, I guess that was a really dumb question...lol  I guess I was just hoping that I didn't need an LCD display for it.
> 
> > > 3.      Are there battery packs available that would be small &
> > > compact (not much larger than the board itself)?  I’m looking for
> > > something that would last at min a few hours…at best a day just
> > > replying to a ping every 1 second.
> > Overo COMs are powered by a supply voltage that can vary between 3.3
> > and
> > 4.2V, so most Li-Ion and LiPo batteries are suitable. Not sure about
> > the
> > Verdex Pro though, never used one. Overo expansion boards have built-in
> > power regulators, that lower the voltage going to the COM to 3.3V, so
> > they can be used with a 5V power supply, so you may have to build your
> > own expansion board.
> 
> Are there connectors on the board to attach a battery pack?  What type of connector?
No, there aren't. You can wire a battery to a barrel jack and plug it into the power connector(you need at least 4V I think for it to work). Alternatively, you may attach it to the V_BATT and GND pins on the board, but DON'T TRY to attach the AC adaptor while the battery is attached to that. I think the same limitations from the barrel jack apply, because the board uses voltage regulators, so it can be used with a standard 5V AC adaptor.
> > > 4.      Is there a power button/switch that comes with it?  Or is there an extra board/add-on?
> > Nope. You'll have to do this by yourself.
> 
> Any suggestions as to how to do this?  This is my first project working w/ an actual board (compared to me developing websites).  Are there any switches that could be purchased that would work between the battery pack & the board? Where could I buy these at?
Battery/AC adaptor red wire(positive) -> switch -> V_BATT/barrel inner
plug
Black wire(ground) -> GND/barrel sides.
The switch can be placed in either V_BATT or GND wires, you decide.
Someone will have to advise you on this though, never used a battery
with mine.
> Thanks!!!
You're welcome :)
> 
> 
> 
> 
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