I am pretty much stuck at this point. I am trying to build a USB host to midi converter to send midi signals from a foot control through my arduino uno and USB host shield and into a Zoom MS-60b to change patches. I have seen several people accomplish this but i seem to have lost something in translation. I started this project because the ready made USB hosts cost more than what i paid for the pedal and midi controller. I have a picture of what i have so far but i am a programming and electronics rookie but like to tinker. I hope i am close but want to seek out some help so i didn't create a fancy paper weight.