I built the red, blue, and green versions. I think white and yellow versions exist. They have dedicated clock chips inside, which is nice. They have a 24 hr clock, an alarm, an hourly chime, a temperature sensor, a date, and a 1-7 day of the week indicator. Tricky to set up, but they work fine.
LED Clock Kits
David Butleradded January 22, 2018