Check the time on a glow-in-the-dark plot clock
If you thought plot clocks that write on a tiny whiteboard were cool, this project takes things to the next level, jotting down the time not with a dry-erase marker, but with a UV LED on a glow-in-the-dark sticker. The device itself uses an Arduino Uno for control, along with a RTC module for timekeeping, […]
