Here’s an 8 1/2 x 11″ Northern Lights light box.

How is it done?

It’s a CD being rotated in front of a servo.

I used an old Arduino Uno, uln2003 stepper driver and a 28byj-48 stepper motor. I powered the laser with an LM2596 buck converter. I used a 10V supply and the Arduino and the buck are connected to it. I set the buck for 3V.

Related:

Check out this video sent in by Eric D.