This is a super-accurate clock That uses ping-pong balls as diffusers for LEDs ... separating them by color. I’ll reuse all of the green LEDs, the transistors, pin headers, some resistors ...

[Jacob] has put a slightly new twist on the levitating ball trick with his ping-pong ball levitation machine. We’ve all seen magnetic levitation systems before. Here on Hackaday, [Caleb] built ...

To show you how, it's enlisted the help of some inanimate objects. In the PSA above, a single ping-pong ball falls onto tightly packed mouse traps each with ping-pong balls sitting atop.

An curved arrow pointing right. The ITTF (International Table Tennis Federation) has released a video showing the manufacturing of ping pong balls and it's incredibly satisfying to watch.

Wonderball is an interactive ping pong table which adds a digital twist to traditional table tennis. The hi-tech table uses digital projectors and sensors which track the movements of the ball ...