Global Positioning System (GPS) and Global Navigation Satellite System (GNSS) devices are available at a wide range of prices and are fun to use in an Arduino based project. The hitch is that they spew out “NEMA Sentences” which are easy for people to read but tricky for software. I found a few programs online that convert the sentences to a collection of simple variables, but none would run on my Sparkfun Pro Micro. In the end, I found it necessary to code my own set of subroutines.
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