Tag: Hackaday

via HACKADAY: Radio Apocalypse: The Emergency Broadcast System

Some sounds are capable of evoking instant terror. It might be the shriek of a mountain lion, or a sudden clap of thunder. Whatever your trigger sound, it instantly stimulates something deep in the lizard brain that says: get ready, danger is at hand. For my part, you can’t get much scarier than the instantly recognizable […]

via HACKADAY: Raspberry Pi Learns Slow Morse Code

It wasn’t long ago that you needed to know Morse code to be a ham radio operator. That requirement has gone in most places, but code is still useful and many hams use it, especially hams that like to hack. Now, hams are using the Raspberry Pi to receive highly readable Morse code using very […]

via HACKADAY: Sferics, Whistlers, and the Dawn Chorus: Listening to Earth Music on VLF

We live in an electromagnetic soup, bombarded by wavelengths from DC to daylight and beyond. A lot of it is of our own making, especially further up the spectrum where wavelengths are short enough for the bandwidth needed for things like WiFi and cell phones. But long before humans figured out how to make their own […]

via HACKADAY: Homemade LED Clock Stands Test Of Time

In an era when you might get chastised if your mobile phone is more than two years old, it’s easy to forget that hardware was not always meant to be a temporary commodity. We acknowledge a few standout examples of classic hardware still surviving into the modern era, such as vintage computers, but they’re usually […]

via HACKADAY: Why You Shouldn’t Quite Forget The Moving Coil Multimeter

If you were to ask a random Hackaday reader what their most fundamental piece of electronic test equipment was, it’s likely that they would respond with “multimeter”. If you asked them to produce it, out would come a familiar item, a handheld brick with a 7-segment LCD at the top, a chunky rotary selector switch, […]

via HACKADAY: 3D Printed Hovercraft Takes to the Air

Instructables user [John_Hagy] and some classmates built an RC hovercraft as their final project in the Robotics Education Lab at NC State University. It’s a foam slab with a Hovership H2204X 2300Kv brushless motor inflating a skirt made out of ripstop nylon. Nylon is great here because it has a low friction coefficient and is nonporous to […]

via HACKADAY: Scratch That SDR!

When you think of a software defined radio, what language might you consider reaching for to create the software part of the equation? C? C++, maybe? How about Scratch? “What, Scratch as in the visual programming language aimed at young people?”, we hear you cry incredulously. It’s not exactly the answer you’d expect for an […]

via HACKADAY: Jeri Ellsworth Tours A Radio And Tech Museum

[Jeri Ellsworth] has done some YouTubing again (yes, that’s a word, just like YouTuber) after a four-year hiatus. She’s recently uploaded a very enjoyable four-part series touring the Museum of Radio and Technology in Huntington, West Virginia. Part one contains radios spanning the ages, starting with a spark gap transmitter, some wonderful crystal sets, pocket […]

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