This joystick-controlled machine draws light trails using a laser

Lasers are awesome. Glow-in-the-dark surfaces are, too. As seen here, Justin and Brett were able to combine the two into an excellent drawing machine. 

Their device uses a pair of gearmotors under Arduino control to actuate a rack-and-pinion gantry system over a canvas painted with phosphorescent powder. A laser is mounted at the end of this setup, which traces luminescent patterns on the surface as it moves. 

User interface is via a simple joystick arrangement, with a housing 3D-printed in PLA that’s reminiscent of a Nintendo Wii Nunchuk. 

Check out the demo in the video below and read more about the project in the duo’s write-up.

[original story: Arduino Blog]