What were you doing when you were 15 years old? Maybe getting your driver’s permit? Or finding the guts to ask out that crush of yours? Or thinking about a way to build a giant ping pong-ball machine ...

[Andrew] and his brother had some time (and a lot of ping pong balls) on their hands, so they decided to have some fun and built a remote-controlled ping pong ball turret. Arduino aside, the turret is ...

[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 a ...

JACKSONVILLE, Fla. — On Friday, Flagler County successfully completed its first prescribed fire utilizing a helicopter equipped with an aerial ignition machine. The technology was able to set fire to ...