This GLaDOS Potato Is A Lie

August 21, 2011 by Mike Szczys 24 Comments

Why settle for virtual reality when you can make the digital world into reality? [Josh] wanted to have a GLaDOS potato accompany him through life when not playing Portal 2. He set to work to see what kind of replica prop he could come up with. Judging from the image above, and demo video after the break, he nailed it right in the spud.

There’s no worrying about rot. The potato and a few parts were molded from Sculpey and baked in the oven. Since the fake spud is hollow in the center it’s easy to hide the bits that make it talk. An old MP3 player was loaded with quotes from the game, and plays them back via an LM386 audio amplifier circuit and a speaker hidden below the electronic eye. The eye is lit by five yellow LEDs which are also tied into the amplifier to make them blink and fade with the intensity of the audio signal.

A paint job and the nails and wire really make the build look just right. Now [Josh] needs to host a geek-themed Halloween party so he can really show this off.

Continue reading “This GLaDOS Potato Is A Lie” →

Double Barreled Air Cannon

May 9, 2011 by Caleb Kraft 11 Comments

[Jeremy] wrote in to show off his latest creation. he has built a two barrel pneumatic air cannon. Eschewing the traditional approach of having a single barrel and pressure chamber for his spud gun, [Jeremy] wanted to have a double barreled version. Since he was doing this pneumatically, he had to rig up a way to maintain pressure in each barrel independently of each other, as well as trigger them independently. While we can all agree that one way valves and sprinkler valves aren’t ground breaking, it is nice to see it all laid out and tested. We now have the blueprints if we were so inclined to create our own version. You can see him testing it out by filling the chambers with water and sploooshing that all over the place after the break.

Continue reading “Double Barreled Air Cannon” →

Perfect Spiral, Every Time

April 30, 2010 by Jakob Griffith 20 Comments

[Carmine] let us know about his team’s Automated Football Launcher. Their goal was to combine a football launcher with motion tracking, to allow a player to practice running and catching with the perfect throw. Unfortunately, and we’re not quite sure when, they ended up changing out the Jugs machine for an air cannon, which resulted in the use of foam footballs and the loss of throwing factors such as spiral. Somewhat defeating the purpose but we’ll let it slide; only because we know its going to be shooting potatoes eventually.

The project comes together by using two cameras giving distance and color tracking, combined with a rotating platform (and the best use of garden hose ever), an accurate set-top for their launcher. As seen in the video after the jump, it works out quite nicely. Continue reading “Perfect Spiral, Every Time” →

Sausage Gun 19mm

February 20, 2010 by Caleb Kraft 39 Comments

[youtube=http://www.youtube.com/watch?v=frtQXzt1_E0]

If you are anything like us, you find yourself needing, on occasion, to fling sausages at high velocity. [F00] sent in his solution, the SG19. While the details are glazed over pretty quickly, we get the point. This is basically a smaller diameter spud gun, meant to shoot sausage. While it may not be remarkable in its design, we have to wonder who came up with the idea to use sausage as the ammunition.

Steam Powered Spud Gun

December 29, 2008 by Caleb Kraft 12 Comments

[googlevideo=http://video.google.com/videoplay?docid=-1469285450334085432&ei=9EhZSd_XIJHEqQK6mO2rDQ&q=steam+powered+potato+pistol]

[robbtoberfest] put together this cool looking steam powered spud pistol. Made from household materials, like a lighter and some copper pipe, this spud gun builds pressure in its little bitty boiler to expel the projectiles. It seems as though he’s using a cork to supply a seal, so why bother with potatos? At roughly 2 minutes between shots, its not the quickest, but it sure is cool. Good job [robbtoberfest].