We’ve seen coil winders before, but most of them are motorized and Arduino-fied affairs. Not that there’s anything wrong with that, but seeing an all-mechanical solution in action is pretty ...

An Arduino can measure time, a coil and a resistor will create a delay proportional to the circuit values, and metal around the coil will change the coil’s inductance.

If you are considering building your very own bicycle and would prefer not to buy an off-the-shelf frame, you may be interested in a new Arduino controlled carbon fibre filament winder ...