> Don't forget that energy harvesting from the lower pendulum will slow
> it down and change its behavior. Perhaps some sort of wireless energy
> transfer can be used instead.

I had the idea to put LEDs at the end of clock hands and toyed with
acrylic rod, a laser pointer and transfer coils or slip rings to power the
pointer

A simple experiment with coils worked but not nearly as efficient as
slip rings

https://www.youtube.com/watch?v=3Dd7InRZokfzY

Joe

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