GPS MT3329
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One of the new features of the new version of Android Remote Control for Digital camera is the ability to track stars in the night sky, we need to know the Right Ascension and Declination of the star we want to track.
In order to do this in algorithm behind this feature is based on Sidereal Time Calculator (so the inputs are Julian Dates), to ease the ATMega 328 i have made some math before and i came up with values for Greenwich Apparent Sidereal Time
Download GPS MT3329 Library for Arduino
Download GPS MT3329 Library for Touch Shield Slide