I have just built a polyphonic MIDI synth using a computer soundcard as the brain (more info on that project later, it's really fun).
In order to access most of the sounds in this thing, I need to send a sysex message. But the whole reason I built this unit was to have a physical keyboard that's not part of my computer, so I need a hardware box that can send this one measly sysex message when I hit a button.
I happen to have a bunch of PIC 16f684s laying around, so if it would be possible to use that chip, that would be great.
What would I need to do to write a program that just sends this one message? Are there any code examples similar to this that I could dig through and adapt?