[Stoppi] always has exciting projects and, as you can see in the video below, the latest one is a very simple magnetic levitator design. The design is classic and simple: a 5 V regulator IC, a Hall effect sensor, a 741 op amp, and a MOSFET to turn the electromagnet on and off.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/02/10/simple-magnetic-levitator/