I'm trying to use the arduino to send MIDI CCs via USB, it's a DIY controller i made that i was using via MIDI cable, i'll have to do some research and see if i'm capable of making it work just via usb, that way i can use only one cable for the controller instead of USB + MIDI cables.
Thanks for the info!
Let us know how you get on.
Be great if the Kemper recognised an Arduino as a midi device (a bit like a PC/Mac can) without the need to reflash the arduino-firmware