I built this out of a microsoft intellimouse and some tinkering with Max. Still needs some work, but I'm not going to be able to work on it for a while.
The idea was that you shouldn't need a dac, needle, special record, and special hardware to tell how fast a platter is spinning. You can build this for $5.
google tascam ttm1
skiplogic 2 months ago
It seems like I'm not the first person with this idea
skiplogic 2 months ago