Kyrre Aalerud wrote:

>But I don't see how you can get the GPS system cheap enough though...
>


Philips is producing GPS chip sets. Main processor sells in
$16USD range. It's a place to start, but it uses an 8051-type
processor [stowaway - get it to manage the bilge], rather than
PIC:

http://www-us.semiconductors.com/publications/content/file_450.html
http://www-us.semiconductors.com/pip/SAA1575HL

Also,

http://www-us.semiconductors.com/pip/UAA1570HL_1

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