Arduino GPS Clock

This a little personal project to assemble various components laying around into a very precise GPS clock, accurate up to 50 nanoseconds in theory.

I used an old Arduino Leonardo board with an even older Motoral UT+ Oncore GPS receiver to display the time on a 7-segments led display.

Install

$ git clone arduino-gps-clock
$ cd arduino-gps-clock
$ arduino-cli compile -b arduino:avr:leonardo
$ arduino-cli upload -p /dev/ttyACM0 -b arduino:avr:leonardo

External Libraries

• https://github.com/arduino-libraries/Arduino_DebugUtils
• https://github.com/RobTillaart/Arduino/tree/master/libraries/HT16K33

TODO

• Add a light sensor and lower brightness at night
• Set GMT offset
• Compute daylight saving time
• Compute height