Hi!
I've finally finished the speedometer and builded an enclosure for it. However now it appears that the speed display freezes after a while and requires the entire system to reboot, it happens every reboot after some minutes. I've changed the microcontroller Uno for the Nano, for space purposes, wich may have less memory and cause the issue but i'm not sure.
Could it be that the GPS is losing the satellite signals?
Hi,
In the NEMA strings there should be a value that tells you how many satellites it can see, also a "goodness" or "quality" value that indicates the accuracy/validity of the data.
Is there a reason you didn't use the TinyGPS+++ library to do most of the work for you?
Check out the library examples.
Tom... 
I chose neogps because I read that compared to other libraries it is faster and more accurate, but now I will also test with tinygps ++.
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