Japanese Circuit Engineer!
I made MIDI Switcher for ZOOM MultiStomp(MS 50g and MS70-CDR,MS60B)
myVine
https://vine.co/v/Od7Pnp0AaqV
using Arduino and USBHostShield
Schematic and SourceCode Here!!
this is my Blog in Japanese
SourceCode
http://garagestylemsc.blog.jp/archives/20654052.html
Schematic(Layout)
http://garagestylemsc.blog.jp/archives/20767328.html
this Switcher presetnumber10 is bypass
you can programchange 1~8!
enjoy!