An Arduino and Real Time Clock are responsible for the time keeping and coordination of the LED’s. As you can see in the photo, 2 of the LED’s colors are used.

Check out this smart shelving system driven by an Arduino and using LEDs, which serves as a clock.

[Paulo’s] garden lights are probably a bit more accurately automated than anyone else’s on the block, because they use latitude and longitude clock to decide when to flip the switch. [E… ...