Ok, the reason for this project is I wish to use the Yamaha PSREW400 for live gig work, without taking along a computer. I use the keyboard with two other midi devices that have the usual din plug midi protocol. These two pics are the two devices I have. Maybe the midi board is only to send midi to the arduino, not to take a USB midi and then send out via 5 pin din midi socket, but as the din sockets are labelled midi in, out and thru, I would have thought that the midi out socket would have to send midi information from the arduino, that is being processed from the USB input? Maybe I am right off the mark with my assumptions. The fact that the midi module plugs straight onto the arduino, one would think that they are meant to do the job as I require. There is very little information on this setup from the suppliers as I guess most musicians just drag along a computer to use as a host, but there must be some sort of market for them as they wouldn't be producing them in the first place.
