You don't really need an Arduino or anything complex in all of this; the watch just needs some rocking motion of some sort. A cheap gearmotor, and some handywork, maybe a wall-wart sized for the motor, and a switch.
You don't really need an Arduino or anything complex in all of this; the watch just needs some rocking motion of some sort. A cheap gearmotor, and some handywork, maybe a wall-wart sized for the motor, and a switch.