Arduino Mega with 20 x 4 LCD taking data from a GPS. Here showing local and UTC time.
Blog post with documentation of hardware and some 17 different screens showing solar and lunar data and more: https://la3za.blogspot.com/2021/09/gps-clock.html
Blog posts detailing the development:
- Finally figured out the moon, 23.08.2021, https://la3za.blogspot.com/2021/08/finally-figured-out-moon.html
- GPS Clock with Binary Display, 27.04.2020, https://la3za.blogspot.com/2020/04/gps-clock-with-binary-display.html
- Yet another Arduino GPS clock, 6.11.2016, https://la3za.blogspot.com/2016/11/yet-another-arduino-clock.html
Hardware schematic:
