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Holo Clock

This is a simple clock based on a single geared stepper motor, found in surplus 10 for a dollar. The motor is a 1:30 geared motor working at 12v with a 3mm shaft. The single motor moves a gear train which in turn moves the minute ring and hour ring. The attiny pulses the motor every minute to move the minute wheel and the hour wheel.

This content is available for immediate download to owners of the magazine. is a free library of 3D printable, beautiful and useful objects. The first version of MyMiniFactory was launched on the 18th June 2013. It is the result of many months of hard work by a professional team of experienced 3D designers.

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