[Geowanking] low cost gps location broadcasting hw / sw

Ragi Burhum ragi at burhum.com
Tue Feb 1 12:55:02 PST 2011


Just curious,

Since Instamapper is using Google Maps tiles, doesn't this violate 2g of
Google's TOS (just because it is using the GPS "sensor")?
http://www.google.com/intl/en_ALL/help/terms_maps.html




> Date: Tue, 1 Feb 2011 14:07:53 -0500
> From: "M. Adam Davis" <adavis at ubasics.com>
> To: Paul Faunik <paulfaunik at gmail.com>
> Cc: geowanking at geowanking.org
> Subject: Re: [Geowanking] low cost gps location broadcasting hw / sw
> Message-ID:
>        <AANLkTinvHC2qk3-E2K_YEcF7cT+5CDno3zthZ15XqDSe at mail.gmail.com<AANLkTinvHC2qk3-E2K_YEcF7cT%2B5CDno3zthZ15XqDSe at mail.gmail.com>
> >
> Content-Type: text/plain; charset="iso-8859-1"
>
> Go to http://www.instamapper.com/diy.html and follow the instructions.
>  $50
> prepaid phone from Target, $0.35/day for tracking ($50 phone includes $10
> credit, so you're good for about a month before having to buy more credit).
> 3-6 days standby time (significantly less depending on cellular conditions
> and your update rate - one minute update rate will drain the battery in
> 8-12
> hours).  For more time, strap a larger battery to it - the one it has is
> under 1AH, so you can easily double or triple that time with 3 AA NiMH
> 2000mAH cells, or some Li-Ion cells such as
> http://www.sparkfun.com/products/8483 and
> http://www.sparkfun.com/products/8484.  You'll need to charge them
> externally, of course.  Works on Nextel/Boost network (make sure you have
> coverage in the areas you're interested in).  Cellular accessories, such as
> car chargers, holders, etc may come in handy if you simply want the tracker
> to work whenever a vehicle is on.
>
> I have built other GPS tracking devices, and it's unlikely that you can
> beat
> the cost if you need cellular coverage.  For short range work a
> hacked-together FRS radio pair, microcontollers (such as arduino), and GPS
> is still more expensive to start up, but there are no ongoing costs so
> might
> be better savings in the long run.  Note that it may be illegal to use FRS
> radios this way.
>
> -Adam
>
>
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