How does this magnetic levitation kit work?

[wonderfulaudio]

1) YouTube
2) 100-240v 500-650g magnetic levitation system module core display stand led light Sale - Banggood.com | Shopping India

Its active, seems to have hall sensors in the center.
Can anyone please explain how it works?

 

[Enzo]

Magnetic levitation - Wikipedia

 

[Flyingwigs]

It's a repulsive levitation, and i believe it measures the magnet in 2 directions so it can determine how much to power the coils to keep it stable.

 

[JonSnell Electronic]

It is a linear motor with constricted poles.

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