Also- I bought a gps unit that simply has a six strand harness coming out. I was wondering the best way to connect this to the arduino. Do I cut off the harness, trim the wires, and run them through a breadboard? Do I need to just go ahead and get a gps shield? Is there some kind of adapter?
Mine looks like this minus the circuit board under the gps chip. Just the chip and the small wiring harness coming out of it:
http://www.ladyada.net/make/gpsshield/gpstest.html
I have no problem buying a gps logging shield if that would make this project easier, but I do need to record the transducer reading at the same time the gps records a position.