I'm looking for a solution at home, but I think I'm looking for something a little more interactive, as in an open source style SmartBoard.
I did for a few years :) Was great!
When doing research on how to build one, I was having issues with the methodology I was using ( a very naive one), so I actually emailed Johnny asking him for pointers and he actually responded!
His very short email just said (and I quote): "it's called a planar homography"
After digging a lot and tracking some research I found an explanation of the algorithm and things kinds just clicked. It was amazing.
So... if someone reads this and is figuring out how to do something similar, search for that :)
Edit: I actually found the paper!
Very interesting read if you want to figure out how to warp coordinates from a camera to the screen
Mirror the video image (or learn to write backwards) and viola.
There are some other ones where the presenter isn't on screen but it's the same software (or looks identical in writing style)
"The lightboard itself is made up of a heavy duty frame, a 3/8” sheet of low iron glass (commercial name starphire,) and a string of LEDs to wrap the edges of the glass to shoot light inward to make the neon markers pop on camera."