Category Archives: misc hacks

Cold Plasma Torch Produces a Cleansing Flame that Never Consumes

It’s basically a lightsaber. Except smaller. And with an invisible blade. And cold to the touch. But other than that, this homebrew cold plasma torch (YouTube, embedded below) is just like the Jedi’s choice in elegant weaponry.

Perhaps we shouldn’t kid [Justin] given how hard he worked on this project …read more

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Posted in Argon, electron, electron temperature, flyback, high voltage, ion, ionization, misc hacks, plasma, RF | Leave a comment

Making Microfluidics Simpler With Shrinky Dinks

It’s as if the go-to analogy these days for anything technical is, “It’s like a series of tubes.” Explanations thus based work better for some things than others, and even when the comparison is apt from a physics standpoint it often breaks down in the details. With microfluidics, the analogy …read more

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Posted in control, film, microfluidics, misc hacks, plastic, polystyrene, science, Shrink film, shrinky dinks, Tesla valve | Leave a comment

Making a Flying Wing With Expanding Foam

Many radio control aircraft modelers will be familiar with the process of cutting wings out of foam with the hot wire method. The tools are simple enough to build at home, and it’s an easy way of producing a lightweight set of wings without too much hassle. [IkyAlvin] walks a …read more

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Posted in expanding foam, flying wing, foam, misc hacks | Leave a comment

Pocket Watch Becomes Pinhole Camera

A pinhole camera is essentially the combination of the camera obscura with photographic film. The pinhole acts as the lens, focusing the scene onto the film, and after exposure, the film can then be developed and you’ve got your picture. They’re a fun way to learn about photography, and easy …read more

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Posted in camera, classic hacks, misc hacks, pinhole camera, pocket watch | Leave a comment

Circular Linear Motor Becomes A Micro Motor Raceway

Over on Hackaday.io we have a lot of people playing around with the possibilities presented by cheap printed circuit boards. Whether that means making a quadcopter from fiberglass or a speaker from etched copper, we’ve seen just about everything. Now, finally, we have a miniature magnetic racetrack. It’s an ant …read more

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Posted in circular motor, linear motor, misc hacks, model car, pcb motor | Leave a comment

Analysing National Budgets With File System Tools

Understanding a national budget can be difficult, with political interests and distorted talking points obscuring the truth. There’s no substitute for diving into the hard data yourself, but it can be difficult to know where to start. [D. Scott Williamson] wanted to do just that, and took an unconventional path …read more

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Posted in file system, filesystem, misc hacks, national budget, US budget, US national budget | Leave a comment

A Peek Inside A Typical British Residential Power Panel

No matter what field you’re in, it’s interesting and instructive to find out how others practice it. That’s especially true with electrical distribution systems, where standards and practices differ from country to country and even between regions. This tour of a typical British residential electrical panel is a great example …read more

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Posted in british, circuit breakers, consumer unit, distribution, GFCI, grid, mains, misc hacks, power panel, RCD, uk | Leave a comment

Flex PCBs Make Force-Mapping Pressure Sensor for Amputee

What prosthetic limbs can do these days is nothing short of miraculous, and can change the life of an amputee in so many ways. But no matter what advanced sensors and actuators are added to the prosthetic, it has to interface with the wearer’s body, and that can lead to …read more

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Posted in amputee, contests, flexible circuit board, matrix, misc hacks, multiplexer, pic, piezoresistive, prosthetic, sensor, shift register, transducer, velostat | Leave a comment

DIY Air Conditioner Built From Weird Donor Appliance

There are some parts of the world where living without air conditioning borders on unthinkable. But in more moderate climates, it isn’t all that unusual. [Josh’s] apartment doesn’t have central air conditioning — the kind that connects to a forced-air heating/cooling system. It does, though, have a water circuit for …read more

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Posted in air conditioning, collant, compressor, home hacks, misc hacks | Leave a comment

Hiding Messages In Magnets

Magnets have always been fun, particularly since the super-powerful neodymium type became readily available. You can stack them up, pull them apart, or, if you really want, use them for something practical. Now [Adric] has shown us a new use for them entirely – by writing hidden messages on them. …read more

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Posted in Hidden text, magnet, magnets, misc hacks | Leave a comment