File:Fade-0

Description
Fade transforms any surface into a “glow in the dark” screen. You firstly coat the wall with a special transparent spray paint. After dark install your laser projector nearby. The laser draws with light and leaves an eye-catching fading trail behind.

Instructions on http://streettoolbox.wikia.com/wiki/Fade

Tags: street art, graffiti, laser, light, led, arduino, diy, stepper, activism, protest, wall, phosphorescent, 405nm, glow in the dark