Sargent & Greenleaf 6700 Opened!

https://lemmy.world/post/1205338

Sargent & Greenleaf 6700 Opened! - Lemmy.world

This one took me about 6 hours!

So are the graphs below sound feeback or something? Whats going on here?
Touch feedback from rotating the dial back and forth, to feel the contact points. When the dial is turned to a correct number those contact points move ever-so slightly. The graphs are a map of the differences in the contact points.