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Most of the GPS modules keep on sending the data in the NMEA format whether they have a GPS fix or not, however, you can parse the GPS data to find whether the data is the latest data received from the GPS or not. If you look at the definition of the NMEA data here, there are a few variables in the data that you can use to find whether the data is the latest ...


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It seems that the problem with the GPS was caused by my usage of the arduino delay(...) method in my loop. I'm assuming that by using delay, the connection to the GPS module was being severed, and in effect, every loop was forcing a reconnect and a new download of satellite details. In summary, when needing high sample frequency interaction with the GPS, ...


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