Arduino GPS Clock

This is an analog clock refreshed by GPS-signal on TFT display capable of:

• Calculation of sunrise & sunset / sun azimuth & sun elevation by own GPS-position

• Calculation of moon phases & moon azimuth

• Switching to day & night color by sun phases

• Showing the rotation of sun and moon on an imitation horizon at the display

• Tidal level calculation for your predefined location

The code is designed for the UNO board and serial connected (TX/RX) to a standard GPS module.

On the top side is a 240x320 TFT screen directly plugged into the main board. One board pin is used for a lamp, switched on at sunset. The code is free and can be used or changed by other people.