Arduino Powered Knife-Wielding Tentacle will Leave You in Stitches

Writing articles for Hackaday, we see funny projects, and we see dangerous projects. It’s rare to find a project which combines the two. This one somehow manages to pull it off. [Outaspaceman] is familiar with LittleBits, but he’s just starting to learn Arduino programming. He completed the blink tutorial, but blinking an LED just wasn’t enough fanfare for the success of his first Arduino program. He connected the Arduino Mega’s LED output to a pair of LittleBits which then switch a servo between two positions. A bare servo wouldn’t be much fun, so [Outaspaceman] connected a tentacle and a small Swiss army knife. Yes, a knife.

The tentacle in question is designed to be a finger puppet. There’s something about a tentacle waving a knife around that is so hilarious and absurd that we couldn’t help but laugh. We’re not alone apparently, as this video has gone viral with over 1 million views. It’s almost like a violent revenge of the most useless machine. For the technically curious, the tentacle’s seemingly random motion is analogous to that of the double pendulum.

Our readers will be happy to know that [Outaspaceman] has made it to the Arduino servo tutorial, and is now controlling the servo directly, no LittleBits needed. We just hope he has a good way to turn his creation off – without the need for stitches.

Continue reading “Arduino Powered Knife-Wielding Tentacle will Leave You in Stitches”

Assassin’s Creed Hidden Blade

The youngins in the crowd may not remember Taxi Driver, but [Matt]’s fully functional hidden blade from Assassin’s Creed finally does justice to the hidden weapon on a drawer slide idea. It’s got everything you would want – immaculate craftsmanship and a video game reference for that every so necessary blog cred.

[Matt] started his hidden blade build with a drawer slide, mounting an old WWII replica blade to the slider. The blade retraction is spring-loaded, and with a small ring and a bit of wire, the blade gets its automatic draw and retraction.

The arm brace is where this project really shines. [Matt] crafted this out of two pieces of leather, tooled with the Assassin’s insignia and dyed to a deep, jet black

This isn’t the first time we’ve seen an automatic hidden blade from Assassin’s Creed, but [Matt]’s effort is really top-notch. He’s got beautiful leather crafting down pat, and we can only hope his Halloween was filled with parkour and stabbing.

Assassin’s Creed blades make us wince

[TheBserk] made himself a set of auto-locking and auto-retracting hidden blades inspired by those in the game Assassin’s Creed. As you can see in the demo (and build guides) after the break, they work really well. We don’t like the idea of sharpened metal ramming its way past our wrists. But it’s not the first time we’ve seen dangerous arm-mounted hacks.

Reminiscent of Taxi Driver, [TheBserk] uses drawer slides from the local home store for his build. They are cut to length, and modified using springs for the automatic action. There is a lock to keep the blade extended, and a pull-wire to actuate it. Although dangerous, the build is well done. We think someone has mechanical engineering in his future, and possibly a trip to the emergency room.

Continue reading “Assassin’s Creed blades make us wince”