Moon watch

A set of watch faces for the open-source E-Ink smartwatch Watchy.

Features

• 12-hour watch with analog hands
• 24-hour watch with analog hands, useful for solar navigation
• Date, day, month and current zodiac sign
• Accurate moon phase, using NASA moon images. (2 per day)
• Calendar for current month and next month, including moon phase days
• step counter, alarms & timers from Watchy_GSR

Based on Watchy_GSR, some free fonts, and NASA moon images.

Clock hands are drawn using polar coordinates, a reasonably simple way of rotating them.

Text (day & month names) are in Norwegian, which needs characters outside of ascii. So I made a library for printing UTF-8 strings to make this possible. Any unicode characters in the basic multiligual plane are now printable on arduino, if backed by a suitable font and a bitmap display supported by Adafruit GFX. See GFX-utf8

The up and down menu keys are used to switch between watch displays (watch, calendar).

Development was done with platformio on linux.

Future plans, if time permits:

• showing the next alarm in the watch display
• fetching events (calendar sync), creating alarms & more calendar displays
• step count display, buzz when reching the daily step goal

The other watch displays: