Magnets are amazing devices, and as demonstrated by Instructables community manager Troy Hawkins (AKA “tomatoskins”), they can even be used to mysteriously tell time. His project features magnets hidden behind a classic walnut veneer to rotate a pair of ball bearings around the unique clock face.
While externally minimal, there’s a lot going on inside its wood surface. The clock is controlled by an Arduino Nano along with an RTC module for accurate timekeeping. A 28BYJ-48 stepper motor-driven, 3D-printed gear system guides magnet positions and Hall effect sensors are used for both the hour and minute hands.
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