[PD] USB foot switch

[Gilberto Agostinho]

@Derek

 > I used a Logidy UMI 3 back when I was a OS X user,

@Jaime

 > It works fine as a midi device in both linux and os x. expression 
pedal works fine too. very sturdy, it’s a bit noisy, but I’m happy with it.

Thanks for all the info, guys. This UMI3 looks great, I will forward the 
tip to my friend.

Cheers!
Gilberto