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By Tawjaw
I want an advice on how can I detect when the watch is inside the watch winder.

This is an example of the watch winder:
Heiden Monaco Single Watch Winder - Dual Powered - Black Leather - Japanese Mabuchi Motor ... sAb9844AM7

I want to use a sensor that can detect when there is a watch inside for the winder to switch on. And switch off when the box does not have a watch.

Any suggestions are helpful. I am making a watch wonder for myself. Thanks.