"It is by riding a bicycle that you learn the contours of a country best." -Ernest Hemingway
A Garmin eTrex Vista global positioning satellite receiver was used to keep track of my position throughout the journey. It features an integrated altimeter, barometer, and compass as well as the typical GPS functions
The GPS was attached to the bicycle handlebar with a RAM mounting system designed specifically for the eTrex GPS series. This is a very high quality mounting system that provides a very strong mounting point while allowing the GPS to be placed in many positions.
I came up with some custom power and computer connectivity solutions for the GPS. The power and serial cables that are commercially available are very expensive and did not meet my needs so I built a custom cable that interfaces with a USB-Serial converter.
Powering this unit from AA alkaline cells woud have been very tedious and expensive. There are two other 3 volt solutions that I have come up with:
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Lawrence J. Flint