To be honest, the performance of this pneumatic cannon isn’t really blowing me away — but the noise it makes is cracking me up. Can you spare fifteen seconds to watch the video? I knew you could.
Granted, I’m not really an expert on this kind of thing. It’s actually pretty awesome that you can put this stuff together from off-the-shelf parts. The project is documented here, complete with circuit diagrams and such, so if you feel like duplicating (or trying to improve) the design, have at it.
[via Hack A Day]