Re: [Gumstix-users] Fw: Gumstix configuration (was Re: Routing GPRS data to ethernet port)

[<swc...@ti...>]

Yes, I'm using a CF GPRS modem (Hamlet for 180 Euros).
I did not want to work on new hardware (pcb drawings, board  
engineering, etc) so I decided to go with the CF.
It's working but I have not tryied it on a NetStix yet (just on a 
CFStix) so I don't know if power will be a problem as reported by other 
users.
If somebody has some advice it will be welcomed.

Alex


swc...@ti... escreveu:

>Derez,
>You are right. Just now I realized that using CFStix I can not use 
>regular
>ethernet board.
>I worked only on the GPRS "side" without looking at the ethernet 
>"side" and
>only now I realized the problem You pointed out.
>Did You get any confirmation by Gumsix guys that CFNet does not have 
>enough
>power for both?
>I dont' see any other way of doing what we are trying to do beside 
the
>solution You are working on.
>Alex
>  
>

You're using a cf gprs modem, right?
I'm not sure about these, but I use a siemens mc-35i via serial port, 
and altough this module doesn't drain more than a few ma most of the 
time, when transmitting it can burst up to 2A. I have a power supply 
able to sustain 2A on load, and both devices are connected to it, but 
I 
suspect that when using a netcf, if your cf card is hungry, then you 
may 
encounter power issues, not sure because I never used one myself.

The bad thing about such modules as mc35i is that while it's size is 
quite almost identical to some cf gprs cards i've seen out there, 
it's 
not user friendly at all: you need to do a child board for it, etc.

But it maybe a solution for your case, should netcf proves to be 
useless 
under this scenarip.

- Alexandre



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