Question

Smallest possible spinning clock?

Answer 1

All the hands in your average clock actually spins together, all driven by the same spring/motor. however the cogs connecting each hand to this motor/spring would have a different radius. And each cog spins at a different speed depending on its radius (larger the radius, slower the cog).
So basically, the sizes of the cogs are arranged so that the minute hand cog turns 60 times slower than the second hand cog, and so on. So for each full circle the second hand turns (which would be arranged to take 60 seconds), the the minute hand would have turned 1/60th of that.

Answer 2

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✔️✔️Specifically the video first breaks apart a Quartz Clock mechanism, hooks up the solenoid that powers the clock to a H-Bridge driver and then hooks up the H-Bridge driver to an Arduino.

Then we proceed to program the Arduino so that the clock spins faster and faster until it can spin no faster without experiencing errors.

This is how I worked out how fast a Quartz Clock mechanism can spin and what I recommend you do too.

See the video for more details and get a gist for how you might do it yourself.


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