If you own a ping pong table, it's likely there's a bucket of ping pong balls lying in wait for a bash. Even if your racket sport days are behind you, you can get those balls in motion again with ...

I’ll reuse all of the green LEDs, the transistors ... We do need to add ping-pong balls as diffusers before the display will be finished but if there’s a problem you don’t want to have ...

The diameter of ping pong balls is a mismatch for the spacing of LEDs on a strip. The solution? A bit of force. The technique we want to highlight is not the fact that he used table tennis balls ...