Why wax poetic:
It's a glow in the dark board. You can draw on it with lasers.
It is like a remote self-erasing Etch A Sketch.
Step 1: Parts
- Glow in the dark tape or paint (I used this tape from Amazon)
- 405nm UV laser
Step 2: Build
Cut the tape into strips. Put the strips on a board or wall or anything; it doesn't really matter.
Step 3: Draw
For tight clean lines hold the laser against the board and draw on it like you would with a pen. It can also be drawn on from across the room, but the lines are all squiggly.
The second video shows a prototype, where I used two different brands of glow tape with two different half-lives. This is what causes the stripe pattern.