[ATM] Grit dispenser

[Don Clement]

I was thinking of something with less mechanical parts with a simple loud
speaker using low frequency acoustics to set up modal patterns than holds or
distributes the grit. One modal acoustic pattern would hold the grit in
place on say a metal plate; another acoustic pattern would distribute grit.
Circuitry would be quite simple and inexpensive.



Don Clement

Running Springs, California