I have no problem with fun. I've had fun with GPS receivers in the past: http://www.scss.com.au/family/andrew/gps/rojone/
Here's a 1A car charger: http://www.ebay.com.au/itm/12-24v-DC-1000mA-High-Power-Universal-USB-Mini-in-Car-Charger-Power-Adapter-Plug-/390524978880?pt=LH_DefaultDomain_3&var=&hash=item5aed1a46c0 I should point out that whatever power supply you find for the Pi, will be just as useful for the Nexus. Both need minimum 5V 1A. Of course, developing your own power supply could all be part of the fun. For surveying I use an HTC Desire Z with a USB car charger (similar to the above) connected to a 12V SLA in my bicycle pannier. As with any standalone GPS (which includes the Nexus), accuracy is poor straight away, but greatly improves after a couple of minutes. Don't use Google Maps as your reference, as it allows non-GPS positioning. I use Vespucci (disclosure - I'm part of the Vespucci team), which only allows "fine" (GPS) positioning. Regards, Andrew On 18 March 2013 14:00, Jeffrey Ollie <j...@ocjtech.us> wrote: > On Sun, Mar 17, 2013 at 10:09 PM, Andrew Gregory > <andrew.greg...@gmail.com> wrote: > > > > It's all down to your application. What do you want to do that you can't > do > > on a $50 smartphone? > > Well, the first thing that I'd be looking for is performance... The > GPS on the phones that I've used have not had great accuracy, or > battery life either. The Galaxy Nexus that I have right now draws > power faster than a standard 0.5A USB charger can deliver it when the > GPS is on, and I've had no luck finding a car charger that will > deliver more than that to the Nexus. > > Second, and actually probably more important, DIY is not always about > doing it _cheaper_, it's about doing it _fun_. > > -- > Jeff Ollie > -- Andrew
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