Arduino-controlled Reactive LED Coffee Table

This Arduino-controlled Reactive LED Coffee Table was made by Yohash from Japan. 
Two 24" x 26" boards (pegboard) filled with 818 blue LEDs, 160 IR emitters, and 190 IR receivers. All organized into 190 "nodes" and powered by two Arduino micro-controllers. He built the coffee table and sized the inner cabinet to accommodate these pegboard reactive surfaces. 

Source?Youtube