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A comment on Mechanical-Digital Steel Ball Clock. Parent comment

Re:Mechanical-Digital Steel Ball Clock by iguy on Monday October 12, 2020 @03:25AM (#24752188)
I was surprised by this, as I assumed from the first pictures that it was going to be electromagnets. Seems like a lot of moving parts to do it this way.
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Re:Mechanical-Digital Steel Ball Clock by andreareina on Monday October 12, 2020 @06:34AM (#24753064)
Permanent magnets on servos won't lose their grip on the balls when power goes away.
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