Hardware Reference
In-Depth Information
opposed to staring at little icons on a general-purpose GPS). It empowers you to not
have to do as much prep before setting out to go geocaching by letting you simply get
in your car, pick a direction, and drive.
Figure 4-5.
Cacheberry Pi (photo by Jeff Clement,
http://cacheberrypi.jclement.ca
)
This hack is also smart about how it presents geocaches to you. When still, it presents
the nearest cache in a 3 km radius. When the Cacheberry Pi detects that you are
traveling at highway speeds, it will instead focus its search in front of you and show
you only the nearest geocache in the direction that you are traveling. It has the ability
to maintain a database of 20,000+ geocaches and to track a log of which caches you
have visited (and allow you to transfer that log via USB storage device). It displays the
nearest geocache to you, the distance to that cache, and the compass bearing to the
geocache.
Gathering Hardware
To build the Cacheberry Pi, you will need some hardware in addition to the Raspberry
Pi unit.
GPS receiver
The Cacheberry Pi project assumes that you are using a USB-powered GPS receiver
(GPSr) and recommends the
Holux M-215
,
but any other standards-compliant GPS
should work properly.
