Two similar DIY magnetic levitation projects from designer Peter Neufeld are presented on the Elektor Labs pages, in both cases a Lego figure that floats in the air. Both work on the same principle: the strength of a magnetic field between an electromagnet and a neodymium magnet is measured with a Hall-sensor and the electromagnet is controlled depending on this measured value. The difference between the projects is in the control circuit: the first is “hardware only” and uses an analog comparator, while in the second a M5Stack Atom ESP32 Pico microcontroller module is used.