When it comes to just telling time, you can discern the individual “hands” by differences ... we can drool over a more digital take on the LED filament clock. Although, filaments are certainly ...

he put a couple of red and green clock hands onto a standard PC fan(I love Panaflo fans), then he built a circuit to strobe a RGB LED to create a set of virtual clock hands on the spinning fan.

There are no numbers, and no hands, at least until someone ... This happens because touching the clock face turns off all but three of the LED lights around the edge, thus casting the shadow ...