Hackaday Newsletter 0x1A

What if you could hear all of the electromagnetic waves around you? [HACKADAY]( GitHub Copilot And The Unfulfilled Promises Of An Artificial Intelligence Future [Read Article Now»]( Hearing the Unhearable By [Elliot Williams]( My wife was watching a crime drama, and one of the plot twists involved a witness' hearing aid malfunctioning so that he could hear electromagnetic waves around him. It's not so implausible, if you think about it. Many hearing aids have a [t-coil]( which is essentially an inductor that's designed to couple with the speaker in a telephone. If that went haywire, maybe you could hear all the changing magnetic fields around you, and if you could escape the constant hum of the mains power line, it might even be interesting. So of course, she turns to me and says "we need to make one!" It shouldn't be hard at all -- a big inductor and an amplifier should do the trick. In fact, it'll probably be easy enough that it'll make a good introduction-to-electronics project for my son. But there are also enough unknowns here that it'll be interesting. How big a coil? How close? How sensitive? What about that mains frequency bit? Ferrite core or not? None of this is rocket science, for sure, but it will probably be full of kludges, discoveries, and straight-up exploration. In short, the perfect weekend project. And in the end, it'll expose something that's normally invisible, and that's where the fun lies. This must be the same urge that drove Faraday and Marconi, Volta and Maxwell. There's something amazing about directly sensing, seeing, hearing, and understanding some of the stuff that's outside of our limited hearing and eyesight, and yet is all around us. I can write down the equations that describe it -- I learned them in school after all -- but there's no substitute for poking around in your own home. Who knows, maybe in a few more weekends we'll build ourselves [an all-band receiver](. What's your favorite super power? From the Blog --------------------------------------------------------------- [Hands On: DEF CON 29 Badge Embraces the New Normal]( By [Tom Nardi]( This year's DEF CON badge? It's a controller for your video call. [Read more »]( [Gladys West Modelled the Earth So That We Can Have GPS]( By [Al Williams]( To create GPS, first you need to understand how non-spherical the earth is. [Read more »]( [AND!XOR’s DEF CON 29 Electronic Badge is an Assembly Puzzle]( By [Mike Szczys]( This year's AND!XOR badge is a puzzle to solve with solder. [Read more »]( [Hackaday Podcast]( [Hackaday Podcast 130: Upside Down 3D-Printer, Biplane Quadcopter, Gutting a Calculator Watch, and GitHub CoPilot]( By [Hackaday Editors]( What happened last week on Hackaday? Editors Mike Szczys and Elliot Williams get you up to speed. [Read more »]( If You Missed It --------------------------------------------------------------- [Home Depot Is Selling Power Tools That Require Activation In-Store]( [Fail of the Week: Flipped Cable Leads to Fried Radio]( [Strangest Upside-Down 3D Printer Fits In A Filament Box]( [This is a 3D Ink Jet Printer]( [Custom Caliper Tracks for When You’re Going the Distance]( [Raspberry Pi Pico Used as a Transputer]( [Hackaday]( NEVER MISS A HACK [Share]( [Share]( [Share]( [Terms of Use]( [Privacy Policy]( [Hackaday.io]( [Hackaday.com]( This email was sent to {EMAIL} [why did I get this?]( [unsubscribe from this list]( [update preferences]( Hackaday.com · 61 S Fair Oaks Ave Ste 200 · Pasadena, CA 91105-2270 · USA