cheerlink heart shape magnetic levitation rotating photo frame with led red

Magnetic levitation photo frame using current magnetic effect makes the photo frame float in midair.At the top of photo frame there is a magneta coil of wire inside the top of circular plastic boxmetal coil by current will become electromagnet.The suction between electromagnet and the photo frame top magnet can be offset by the gravity of the photo frame so the photo frame can float in midair.Touch photo frame gently to deviate from the equilibrium positionthe photo frame will return to the balance position and will not drop without hand.This is the use of negative feedback mechanism.Can put the two photos(12cm x 8cm) before and after or advertising and free rotation;Built-in 6 LED lights.

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