Beverage Hacks


It’s Memorial Day in the US, so we thought we’d put together a collection of links we’ve covered in the past that might help you celebrate.

The Apu 3000 is one of the finer examples of drug use leading to carpentry. It’s a 4 gallon frozen margarita machine built out of a garbage disposal. A new garbage disposal. We don’t have the time here to speculate on what sort chemical dangers you may expose yourself to by constructing this though.

Continuing the trend of throwing horsepower at problems is the gas powered blender. It’s good for people that love a refreshing beverage while inhaling the fumes of 2-stroke engines.

We’ve covered a couple peltier based cooling projects in the past too. The first was a can cooler for the desktop. The second involved snaking a CAT5 cable across the yard to power a mug.

Back in 2005, Hackaday regular [evan] sent in his BASIC Stamp controlled kegerator. It’s very reliable and way cheaper than a commercial unit.

We’re closing on a sad note: It seems the instructions for making Guinness beersicles have fallen offline, again. From what we remember, you throw the can in the freezer till it reaches a thick slush stage. Then, release the gas so it forms a head in the can. Pierce the bottom of the can and insert the stick. Return the can to the freezer and let it freeze solid.

Make An ECG With Your Sound Card


[Marcus] sent in his work on making ECGs. His first one was inspired by [Jason]’s. Believe it or not, you can build this thing for under $5. After getting it semi-functional, he decided to pick up a cheap one and mod it for PC input via the sound card. (There are plenty of sound card oscilloscope projects that will work for this.) Remember kids, don’t go sticking electrodes on anyone unless you know what you’re doing: correctly placed electrical shocks (even low power ones) can be deadly.

Metalab’s LED Matrix Display


Our friends at Vienna’s Metalab have been working on this project quite a while. Soldering their hearts out to create an FPGA controlled monochrome LED dot matrix display. It’s 48×72 array totaling 3,456 LEDs, soldered by hand. It creates some serious geek bling thanks to an mplayer plugin developed just for the project and it runs up to 72fps. Build details and source code are on the project page. Be sure to check out the awesome video demo below.

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PIC Controlled Spray Paint


Most people make LEDs light up for their first microcontroller project. [Alex] built a “large scale dot matrix printer.” This beast is a PIC controlled ground graffiti machine. As it rolls across the ground it deposits strategically located bits of spray paint. Rather than use actual spray paint, he opted for a set of solenoid controlled nozzles that shoot the paint downward.

Real Life Power Suits

There was a time when the notion of powered armor like the set Ironman wears was just science fiction, but that time is gone. So, while the geeks at io9 are still dreaming of the future we’re very much in tune with the work that is being done right now. We’ll go through some of the most impressive powered suits out there after the break.

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Lumenlab’s New Kit: Open Source CNC


Imagine our surprise when we stumbled on the latest Lumenlab project: gantry style CNC. Until now the only time we ever invoked their name was for DIY projectors. The kit looks pretty interesting, and they’re taking pre-orders right now. It’s designed for a full sized router and you should be able to cut a 4′ by 8′ sheet with a feed roll. Even without, the cutting area is a large 26″ by 50″ and features 8″ of Z movement. Between their kit and an order from Online Metals, they’re projecting that you can build your own for around $1000. We’re definitely in when the final kit is released in June.