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After reading The Five Fists of Science, a retelling of ‘war of the currents’ between [Tesla] and [Edison], [Rob] knew he needed a Tesla gun, the sidearm of the story’s protagonist. Since nothing as stupidly awesome and dangerous as a portable Tesla coil has ever been made, [Rob] needed to make his own. [Rob] started his build [...]

Tags:  gun something tesla rob tesla-coil protagonist fists weapons hacks  

We don’t recall having heard the term ‘collimated display’ before, but we’ve seem them in action. These are mirrored projection display that give the viewer a true peripheral vision experience thanks to well-designed optics. Here is a project that [Rob] and [Wayne] have put a ton of time into. It’s their own version of a [...]

Tags:  collimated display wrap rob wayne home-cockpit experience-thanks peripheral-vision video hacks  

Free-form Christmas ornament Here’s [Rob]‘s free form circuit that’s a Christmas ornament for geeks. It looks great, but sadly isn’t powered through a Christmas light strand. It’s just as cool as the skeletal Arduino we saw. Prototyping with flowers Well this is interesting: protoboard that’s specifically made to make SMD soldering easier. The guys at elecfreaks [...]

Tags:  christmas hackaday ornament rob light-strand christmas-ornament christmas-light hackaday links  

Does a yo-yo work in zero-g? How about a paper airplane? These questions were answered in 1985 on the Space Shuttle Discovery, but reproduction of results is the cornerstone of the scientific method. [Rob] is about to reproduce some of the awesome zero-g pictures by riding on a vomit comet and taking a few pictures of [...]

Tags:  zero paper work rob space-shuttle-discovery paper-airplane pretty-pictures classic hacks  

[Rob] has been working on his drum trigger build, and he’s finally decided to share it with us. His drum heads and triggers don’t look like anything we’ve ever seen, but he’s pretty confident he has a good kit in the works. The first unconventional of the build is the drum triggers. The triggers are [...]

Tags:  bonzo vistalites diy rob musical hacks  

[McKGyver] needed a few parts manufactured. Instead of going the normal route – finding friends with machine tools or paying a machine shop, he improvised a rudimentary metal lathe. As much as we love 3D printers, they’re not the be-all, end-all solution for everything. Sometimes, you need to get a little dirty and do it [...]

Tags:  machine metal lathe rob metal-lathe finding-friends machine-tools tool hacks  

Sometimes, not all our builds work out the way we hoped. That’s what happened to [Rob] and his attempt at a Delta robot that does stereo lithography. A Delta robot is capable of very fast and precise movements, so [Rob] slapped a laser module on the end of the arms. After putting some UV curing [...]

Tags:  printer robot delta rob stereo-lithography robot-3d precise-movements cnc hacks  

Kids love games of exclusion. This usually manifests itself in games of ‘keep away,’ having someone ‘catch cooties,’ or the ever-popular ‘No Brian club.’ [Rob] wrote in to tell us about the digital cootie detector he built. The cootie detector operates on galvanic skin response. It’s actually very similar to an E-Meter, although instead of Thetans this [...]

Tags:  digital detector cootie rob brian galvanic-skin-response games toy hacks  

  [Rob] built this hexapod one day when he had some free time after work. Just like the last hexapod we saw, he based the build on the Pololu design which uses three servo motors for surprisingly reliable movement. The hardware is very straight forward. A Dorkboard serves as the brain. It’s a PCB that is wider [...]

Tags:  day hexapod obstacle rob pololu dorkboard robots hacks  

  [Rob] Was cleaning out his car hole when he stumbled across a servo, a PC cooling fan, an Arduino and apparently a whole lot of bubble mixture. With all of this, some scrap timber and a few trips to the dollar store, he was able to whip up this bubble blowing bot to entertain his [...]

Tags:  bubble blowing bot rob bubble-mixture bouncy-bubbles arduino hacks  

Creativity abounds in putting together this pair of Super Mario Bros. costumes. [Rob] and his wife didn’t stop with a well-assembled troupe of familiar wardrobe items, but decided to go for authentic sound effects as well. It started by finding a few of his favorite Mario sounds on the Internet. From there he grabbed a [...]

Tags:  sound halloween bros rob mario authentic-sound-effects super-mario-bros wardrobe home hacks  

[Rob] just finished reinforcing a cheap drill motor. He picked up the tool at Harbor Freight and ditched the case. The plastic retaining ring was replaced with a thick metal washer which he machine The washer uses three bolts to attach to the mounting plate that he welded together. We’re not exactly sure what he’s got [...]

Tags:  washer drill motor rob metal-washer thick-metal retaining-ring tool hacks  

[Rob] has made an astounding contribution in the effort to keep our libations chilled. Not content with merely refrigerating his cold ones, or even putting them in a cooler full of ice, he has built a beer caddy out of solid ice. Though it may look simple initially, you can see from his writeup that [...]

Tags:  ice caddy beer rob libations writeup hacks  

[Rob] sent us some information on how he converted his flux-cored welder to a metal inert gas welder. He used a piece of DOM tubing as a collet with a side inlet tube that he uses to inject carbon dioxide. The gas is sourced from a 12 ounce paint ball CO2 tank and it looks [...]

Tags:  flux-cored welder gas rob dom gas-welder dom-tubing metal-inert-gas tool hacks  

Find yourself an old record player, a laser level, and a digital scanner and you can build a 3D scanner. That’s what [Rob] did. The camera and laser level are mounted on the turntable for steady rotation. The camera captures the vertical laser line traveling around the room by recording 30 fps at a resolution [...]

Tags:  scanner laser level rob 3d-scanner digital-scanner laser-level misc hacks