Spintronics Community Forum

An ammeter with a real vinyl record

I know the idea is quite difficult to build but here it goes:
It could be great if the ammeter were running a real vinyl record on a full sized tile (I guess it would require external power to keep a low resistance).

The ammemeter looks quite beautiful but many people gets a bit dissapointed when they hear the sound.

after I have read the long thread with ideas I find the ideas with an integrated circuit and the switch on level 1 and 3 to be better (than the vinyl ammeter)