via The MagPi
My weekly sailing crew asked for a way to visualise where we had been, and for a live display of the true speed over ground to see whether we were fighting tides. This project delivers both, without relying on internet connections or cell phone data. Add a battery and it would also be useful for car rallies or cyclists. All you need is a Raspberry Pi Zero W with some additional hardware, Python, and Mathematica!
Raspberry Pi Zero W with case and GPIO header
40-pin stacking header for the Scroll pHAT
USB to micro USB cable for power
12 V USB power adapter suitable for a car
You’ll also probably need a boat.
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