Alright, it’s Friday, the weekend’s here, and you’re wondering what kind of geeky projects you might get yourself into after a couple of six-packs. How about making your own sentry gun?

Now I’m not talking about some lameass remote control thing, no, this here’s a fully-automated sentry gun, capable of picking out a human target and accurately tracking and shooting it. Sound like fun? Ok, here’s the scoop.

Aaron Rasmussen, the man behind the build log, did this as a cool robotics project for the summer. Before anyone starts to get upset, it’s not a real gun, it’s just a cheap automatic Airsoft replica of an FN P90 that shoots .2 gram 6mm BB’s. Aaron’s web page here features a fully detailed build log with lot’s of great pictures. Be sure to check out the section on testing…

Most of the testing involved me directing my little brother in front of the turret, him getting shot, and then running away. Polo shirts, not surprisingly, offer very little protection from BB’s that are prone to leaving little welts.

Hey, who said little brothers weren’t good for anything?

Note: As always, we at Gadgetizer assume no liability for any mishaps resulting from things that we feature here. Don’t be a schmuck - take responsiblity for your own actions.

[via Makezine Blog]