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.
Interested in more magnetic levitation? How about designing your own system using an Arduino? Or you can’t forget Hack a Day’s very own Portal Gun!Filed under: misc hacks
