This sign features animated whorls of color controlled by custom code on an Arduino. The main body of the sign is CNC-cut and hand-finished expanded PVC. The clear lenses are were CNC-cut from clear acrylic and frosted by hand.
Here’s a peek at the sign’s innards. This intermediate plate was also CNC-cut to ensure perfect alignment between the side-firing LED strips and the acrylic lenses that mount into the sign face.