I've inherited a nice automatic (self winding) watch and want to put together a winder for when I'm not wearing it.
Requirements:
Rotate the watch in one direction for roughly 5 minutes at roughly 10 rpm, stop for roughly 2 hours.
Rotate the Watch in the other direction for roughly 5 minutes at roughly 10 rpm, stop for roughly 2 hours.
and so on....
I don't need:
Any variable speed control - 10 or so rpm is fine.
Any feedback, servo control, etc.
Any holding torque during the idle period.
Any unnecessary complexity.
I like the idea of scavenging a stepper motor from an old floppy drive.
Can I put together a timing circuit from a 555 or two, with flip-flops, H-bridge controller?
Do I need a microcontroller? I know that it would be straight-forward, but maybe overkill? No background here (I can code, but have not done any PIC stuff).
I'm a novice who's interested in the project to learn the technology, but I could use a few pointers to get going.
Thanks for any input.
Scott.