Clock

Clock display and settings require an optional real-time clock (RTC) module. If one is not present, clock display and settings will not be available.

The SmartMatrix Display includes a RTC module and backup battery.

Aurora can use the Teensy RTC Library with a 32 kHz crystal and backup battery, or the DS1307RTC Library which supports DS1307, DS1337 and DS3231 real time clock chips that use the I2C interface.

Here are some compatible boards that are available:

• ChronoDot Ultra-precise Real Time Clock
• DS1307 Real Time Clock