Here’s an impressive example of a completely home built magnetic levitation setup… with wireless power transmission to boot!
[Samer] built this from scratch and it features two main sub-systems, a electromagnet with feedback electronics and a wireless power transfer setup.
The ring of LEDs has a stack of neodymium magnets which are levitated in place by a varying magnetic field. This levitation is achieved by using a Hall effect sensor and a PID controller using a KA7500 SMPS controller.
The wireless power transmission uses a Class E DC/AC inverter that operates at 800KHz. Two coils of wire pass the current between the stand and the LEDs.
It’s very similar to a build we featured last year, but it’s a great hack, so we had to share it! Check out the video after the break.