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Re: [Discuss-gnuradio] USRP / Laptop Road case?

From: davek
Subject: Re: [Discuss-gnuradio] USRP / Laptop Road case?
Date: Mon, 24 Sep 2012 13:43:27 -0400

cool! just what i am thinking about. I assume you used the pick and pluck foam?
what size battery did you use and is it attached directly to the USRP,
or did you need a regulator?

On Mon, Sep 24, 2012 at 1:22 PM, Ian Buckley <address@hidden> wrote:
> Dave, I've built a few systems like this using Pelican case's or cheaper 
> knock off's.
> Rather than go for a "side-by-side layout" which is hard to accommodate in 
> common Peli case sizes, I buried the gel cells and USRP deep in the foam 
> under the laptop. By making the USRP fit snuggly in the foam I was able to 
> build an effective plenum using the USRP's built in fan so that not only did 
> the USRP get sufficient air, but the gel cells and laptop underside received 
> forced airflow, with exhaust and intake air returned to the surface of the 
> open case via some carbon fiber pipe off cut's I had handy. Standard auto 
> shop stuff was best to build the high current wiring and source switches for 
> ON/OFF/CHARGE selection, and I recall sourcing a decent weather proof 
> connector for the charging from Western Marine which got silicone sealed into 
> the one hole I cut in the case. These were all used in applications that used 
> small antenna's, so I mounted an SMA on a foot or so of thin coax directly to 
> a custom bracket I fabricated and attached inside the lid so it was approx 
> vertical when the lid was open. In all case's the laptop was never charged by 
> the gel cell's, they only ran the USRP which I recall gave a fairly balanced 
> run time for the system as a whole.
> I'm afraid I didn't take pictures of any of these builds.
> -Ian
> On Sep 23, 2012, at 5:44 PM, davek <address@hidden> wrote:
>> im searching for a heavy duty road case to house my laptop and B100
>> for portable use.
>> Optionally would like to stick some gel cells in there while away from AC 
>> power.
>> I am thinking putting the laptop and  usrp side be side on the top
>> with batterys underneath, or laptop on top, usrp / battery under.
>> Laptop pulls 20V, USRP 6V. Probably need to create a custom power
>> supply / charging circuit?
>> I checked the pelican line. the 1600 series looks like it might work..
>> Has anyone ventured into a project like this? If so i would like to
>> see case / construction pics.
>> thanks
>> dave
>> _______________________________________________
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