Unique 'Minimal Kinetic Clock' uses moving 3D-printed parts to tell time through light and shadow - Yanko Design
Briefly

Outwardly, the Minimal Kinetic Clock is just a flat piece of white plastic, but thanks to a few moving parts, it assumes a three-dimensional shape that tells the time.
The project required two power supplies to ensure all components received adequate energy, white Hatchbox filament for its optimal quality for 3D printing, an off-brand Arduino Mega (from Elegoo), a sensor shield for the electronics, and 30 budget-friendly servos to bring the kinetic aspect to life.
Read at Yanko Design - Modern Industrial Design News
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