So last night when I was rolling around in bed trying to get to sleep, I started thinking about that whole magnet levitation of turntables idea that was posted a while back. Now, without pulling out some physics books and learning more about magnetics, my please-go-to-sleep thought was that if I have two magnets with opposite poles pointed at each other to achieve the "levitation" and desired separation/air gap of the the table/stand and the turntable, any vibrations should still get transferred over since the when the lower magnet gets (at least) up or down motion, the magnetic field is going to try to repel the magnet on top or allow it to drop, thus transferring the vibration, maybe with some dampening.
Anyway, this got me wondering (still no sleep) if an electromagnet coupled with an accelerometer would be fast and/or effective enough with a bit of electronics to change the magnetic field to reduce or increase the field as necessary to keep the system stable. When the accelerometer notices the bump, change the magnetic field strength to make sure the field repels harder or less depending on the direction and raise/lower the load above. Should also be able to better adjust the system for weights of different turntables (instead of trying to find/build a magnet with the exact required strength). This would also allow for auto-leveling when you use (at least) four different systems (on each corner as "feet").
Make the field wide enough and then you "only" need to solve the lateral movement issue (and possible shielding of magnetic interference caused to the TT/SQ). Maybe the car priced system just uses a mechanical system (pins with insulation to keep things in place sideways) and the house priced model can then use additional electromagnet systems for lateral balancing/stability.
Now that I think about it, I should probably file a patent for "Systems and methods for auto-leveling and vibration dampening via electromagnetic levitation" or some such. Anyway, this would probably work better for some industrial type use case and not be sensitive/quick enough for some/most vibrations for a turntable.
Who wants to build the first prototype?