Nerf sentry gun with image recognition

Here’s another hacked Nerf Vulcan rifle. This time it is an automated sentry gun. You must present it your badge, if no badge is found, you are assaulted with a fiery storm of small nerf darts. All encounters are logged and a photos are kept. This was a final project at Cornell, and for once it wasn’t ECE.  This was for CS1114. They did a pretty good job with the tracking, now they need to add some more interesting voice options to it.

Autonomous paintball sentry gun


[Alan] pointed out this great commercial paintball sentry gun. The gun has a low power motherboard running Ubuntu connected to a firewire camera. Two high torque motors control the pan and tilt of a Tippman 98 custom. The control box allows for easy setup. You can change the sensitivity, color tracking, and firing modes. It also has a remote kill switch. All around a nice looking machine, but at $3K we doubt many of you will be buying one. Beta test video embedded after the break.

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DefconBots sentry gun competition


DefconBots is returning again this year with their shooting gallery robot competition for Defcon 16. They’ve decided to leave the rules unchanged from last year. It’s a head to head competition between fully autonomous guns. The first gun to shoot all the targets on their side of the board wins. The rules aren’t very strict on design; as long as you use nonlethal nonmessy amunition and include a safety switch you’re pretty much good to go. The DefconBots site has a reference design to put you on the fast track to competing. Defcon 16 is August 8-10, 2008 in Las Vegas.

Related: [Aaron Rasmussen]‘s sentry gun we covered back in 2005

[photo: Bre Pettis]

SMS PIN Sentry reader


[Mr G] in London sent in his pin sentry hack. He wasn’t pleased that the device looks like an old calculator, so he rigged up a SMS board to send him his pin on demand. He multiplexed the output of the display driver to the SMS board. When he authenticates from his phone, the board sends a message with the latest code.

Robotic sentry gun

sentry gun

Reader [aaron rasmussen] and his brother Ezra built this awesome robotic sentry gun. The gun is an airsoft replica of an FN P90 and fires 6mm BBs. Pan and tilt are controlled by two hobby servos using a simple controller. Aaron wrote custom software to watch the usb webcam and track targets. There is a video on the site of it being tested

Sci-Fi Contest Roundup: The Valve Universe

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While most of the entries to our Sci-Fi contest come from movies and TV shows, a select few are based on the Valve universe, including a few builds based on Portal and Team Fortress 2.

Deadly neurotoxinGLADOS

Who wouldn’t want a gigantic articulated sociopathic robot hanging around? Two groups are building a clone of GLaDOs from the Portal series. and already the builds look really great.

[AmarOk], developed an open-source personal assistant called RORI that intends to be a more helpful version of GLaDOs, without all the testing and killing. He, along with [Peterb0y] and [n0m1s] are turning this personal assistant software into a GLaDOs replica.

Taking a slightly different tack, [Eric] and [jjyacovelli] built a GLaDOs-like robot with a camera in the ‘face’. This camera connects to a Google Glass and tracks the user’s head movements. There’s also a Nerf gun attached to the end of the robot body, triggered by double winking. Yep, it’s a heads-up display GLaDOs, perfect for punishing your test subjects.

Heavy load comin’ through!

Sentry

Not to be out done by a malevolent, hyper-intelligent artificial intelligence, [Tyler] and [Ryan] are building the cutest gat’ dern weapon in all of west Texas. It’s the level one sentry from Team Fortress 2, and the guys are turning one into a paintball sentry.

The TF2 sentry is a cute little bugger capable of motion tracking and perimeter defense, filling enemies with lead should they ever come too close.

While the end result probably won’t be as large or as heavy as the “official” real-life turret, a smaller table-top sized model is probably a little more practical. Even if it doesn’t live up to expectations, upgrading the sentry is simply a matter of whacking it with a wrench a few times.

 

There’s still time for you to cobble together an awesome Sci-Fi project and have a chance to win some awesome prizes.

Rubber Band Blaster Shoots 10 Rounds a Second

rubber band blaster

Office warfare has just been stepped up a notch and it’s time to hide in your cubicles! Enter the Rubber Band Blaster-32, a fully automatic rubber band handgun with switchable barrels for quick reloading.

It features a unique trigger release design that we haven’t seen before. By using a pull string release, [Dave] the inventor was able to load multiple rubber bands per barrel for individual firing, one by one. Hold down the trigger and as the firing wheel spins up, you can start shooting up to 10 rounds a second!

According to [Dave], reload time is around a minute per barrel, but the barrels can be stored loaded and ready to go, so pack a few mags and hang out behind the water cooler. That’s the last time [Bill] from accounting steals my stapler!

To see this puppy in action, sit tight after the break!

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