SMRTR TechAug 25, 2026TechEBlog

Custom-Built Electromechanical GPS Clock Has Six Spinning Wheels, One Satellite Signal

SMRTR summary

James Clough built a GPS-synchronized clock with six spinning numbered wheels, each driven by its own stepper motor, as a gift for a fellow machinist. A Raspberry Pi Pico reads signals from a GPS module and precisely controls the wheels, creating a self-contained, automatically accurate timekeeping device.

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