Not very often you see a (near) keyboard scratch-build.
What's with the name? aLUMINum PLEXi. And LUMINous.
I've actually had the idea for a while now. Just never thought to merge the two.
This should, actually, be a low-cost project.
So, first things first: Find an old keyboard.
Done.
Then, rip it apart, sketch it out, put it into software.
And that's where I'm at right now.
One last thing.