The clock features a series of 3d-printed gears, all driven by a single stepper motor that [ekaggrat] found in surplus. The clock’s controller is based around an ATtiny2313 programmed with the ...

This 3D printed Earth clock built by [Simon Rob] promises to do just that. The build consists of an Arduino Nano driving a stepper motor, which turns a 3D printed model of the Earth through 360 ...