I'm still sat here pondering how the heck he can make a switch or a button press do something like brighten or darken a page?!.
For someone with zero knowledge of making anything like this, he sure has some guts, and aptitude. I wouldn't know where to even begin on something like this.
Digital smoke in mirrors. On a laptop we can do that with a key combination. This is basically a keyboard (it hooks in via USB interfaces). It sends keystrokes to the PC.
Nice looking but I see it as a lightup arcade control panel. I've built one arcade from scratch and the other redid an existing unit. Didn't have a need for added lights except for the marque.