DIY Yamaha MIDI-USB cable

[Mozart]

Hi,

This is my first post here. I was wondering if anyone had a schematic or a reference URL for Yamaha's UX256 USB-MIDI interface cable? I'd like to build my own but have been unsuccessful in locating any real information on it.

[electrodrummer]

Why build your own? It's not just a cable, it's a box of electronics... (as are all USB->MIDI cables).
You could use an Arduino
Or here's one project http://www.embedds.com/diy-midi-interface-for-usb/
Or Google is your friend
https://www.google.co.uk/search?q=diy+usb+to+midi