Author Archives: Fernando Gomes

Echos of the Cold War: Nuclear-Powered Missiles Have Been Tried Before

On August 8th, an experimental nuclear device exploded at a military test facility in Nyonoksa, Russia. Thirty kilometers away, radiation levels in the city of Severodvinsk reportedly peaked at twenty times normal levels for the span of a few hours. Rumors began circulating about the severity of the event, and …read more

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Posted in Current Events, Featured, heat exchanger, history, liquid cooling, Nuclear Reactor, nuclear weapon, Original Art, radiation, ramjet, Rosatom, russia, Skyfall, Soviet Union, weapons hacks | Leave a comment

Putting The Coanda Effect To Work On A Quadcopter

The Coanda effect is an aerodynamic principle regarding the way fluids tend to flow along curved surfaces. This can be used to direct a flow, and [Tom Stanton] wanted to try out its application on a quadcopter. (Video embedded below.)

The project began by firing up the 3D printer, which …read more

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Posted in coanda effect, drone, drone hacks | Leave a comment

Game On with these Open Source Arduino Buzzers

Planning a game of Hacker Jeopardy at your next meetup? You’re going to want some proper buzzers to complete the experience, but why buy when you can build? [Flute Systems] has released an open source DIY game buzzer system based on the Arduino that will help instantly elevate your game. …read more

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Posted in Arduino Hacks, arduino pro mini, buzzer, Games, nRF24L01+, PowerBoost, quiz buzzer | Leave a comment

Fail Of The Week: How Not To Light Pipe

You’d think that something made out of glass and epoxy would transmit a decent amount of light. Unfortunately for [Jeremy Ruhland], it turns out that FR4 is not great light pipe material, at least in one dimension.

The backstory on this has to do with #badgelife, where it has become …read more

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Posted in badgelife, Fail of the Week, fr4, led, light pipe, non-plated, oreo construction, through hole, via | Leave a comment

A Friendly Reminder That You Might Be In Danger

Product recalls are one of those things that most people don’t pay attention to until things get really bad. If it’s serious enough for somebody to get hurt or even die, then the media will pick it up, but most of the time they simply pass by in silence. In …read more

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Posted in CircuitPython, live feed, Microcontrollers, parts, product recall, PyPortal | Leave a comment

Apollo’s PLSS And The Science Of Keeping Humans Alive In Space

Ever since humans came up with the bright idea to explore parts of the Earth which were significantly less hospitable to human life than the plains of Africa where humankind evolved, there’s been a constant pressure to better protect ourselves against the elements to keep our bodies comfortable. Those first …read more

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Posted in apollo, Featured, history, laika, nasa, plss, science, space, space race | Leave a comment

Warshipping: A Free Raspberry Pi In The Mail Is Not Always A Welcome Gift

Leading edge computer security is veiled in secrecy — a world where novel attacks are sprung on those who do not yet know what they need to protect against. Once certain tactics have played out within cool kids’ circles, they are introduced to the rest of the world. An IBM …read more

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Posted in Cellphone Hacks, gps, hack, ibm, network security, wardriving, warshipping, wifi sniffing, wireless hacks, wireless sniffing | Leave a comment

The Thermochromic Display You Didn’t Know You Needed

We love unique ways of displaying data here at Hackaday, and this ingenious thermochromic display created by [Moritz v. Sivers] more than fits the bill. Using sheets of color changing liquid crystals and careful temperature control of the plates they’re mounted on, he’s built a giant seven-segment display that can …read more

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Posted in chemistry hacks, environmental sensor, liquid crystal, peltier unit, science, thermochromic | Leave a comment

MIDI Controller in a Concertina Looks Sea Shanty-Ready

Did you know that the English concertina, that hand-pumped bellows instrument favored by sailors both legitimate and piratical in the Age of Sail, was invented by none other than [Sir Charles Wheatstone]? We didn’t, but [Dave Ehnebuske] knew that the venerable English gentleman was tickling the keys of his instrument …read more

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Posted in bellows, Bluefeather, bluetooth LE, concertina, midi, MIDI over Bluetooth, musical hacks, pressure sensor, reed | Leave a comment

Exploring the Science Behind Dirty Air Filters

Obviously, if the air filters in your home HVAC system are dirty, you should change them. But exactly how dirty is dirty? [Tim Rightnour] had heard it said that if you didn’t change your filter every month or so, it could have a detrimental effect on the system’s energy …read more

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Posted in air conditioning, air filter, air pressure, energy efficiency, green hacks, home hacks, hvac | Leave a comment