Hackaday Podcast Episode 309: Seeing WiFi, A World Without USB, Linux In NES In Animal Crossing

This week Hackaday Editors Elliot Williams and Tom Nardi start things off with updates on the rapidly approaching Hackaday Europe and the saga of everyone’s favorite 3D printed boat.

From there they’ll cover an impressive method of seeing the world via WiFi, Amazon’s latest changes to the Kindle ecosystem, and an alternate reality in which USB didn’t take over the peripheral world. You’ll also hear about a multi-level hack that brings the joys of Linux into the world of Animal Crossing, 3D printed circuit components, and the imminent release of KiCAD 9.

Stick around until the end to learn about a unique hardened glass from East Germany and the disappointing reality of modern voice control systems.

Download the DRM-free MP3 for safe keeping.

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This Week In Security: OpenSSH, JumbledPath, And RANsacked

OpenSSH has a newly fixed pair of vulnerabilities, and while neither of them are lighting the Internet on fire, these are each fairly important.

The central observation made by the Qualsys Threat Research Unit (TRU) was that OpenSSH contains a code paradigm that could easily contain a logic bug. It’s similar to Apple’s infamous goto fail; SSL vulnerability. The setup is this: An integer, r, is initialized to a negative value, indicating a generic error code. Multiple functions are called, with r often, but not always, set to the return value of each function. On success, that may set r to 0 to indicate no error. And when one of those functions does fail, it often runs a goto: statement that short-circuits the rest of the checks. At the end of this string of checks would be a return r; statement, using the last value of r as the result of the whole function.

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Retrotechtacular: Yamming CRT Yokes

Those of us who worked in TV repair shops, back when there was such a thing, will likely remember the cardinal rule of TV repair: Never touch the yoke if you can help it. The complex arrangement of copper wire coils and ferrite beads wrapped around a plastic cone attached to the neck of the CRT was critical to picture quality, and it took very little effort to completely screw things up. Fixing it would be a time-consuming and frustrating battle with the cams, screws, and spacers that kept the coils in the right orientation, both between themselves and relative to the picture tube. It was best to leave it the way the factory set it and to look elsewhere for solutions to picture problems.

But how exactly did the factory set up a deflection yoke? We had no idea at the time, only learning just recently about the wonders of automated deflection yoke yamming. The video below was made by Thomson Consumer Electronics, once a major supplier of CRTs to the television and computer monitor industry, and appears directed to its customers as a way of showing off their automated processes. They never really define yamming, but from the context of the video, it seems to be an industry term for the initial alignment of a deflection yoke during manufacturing. The manual process would require a skilled technician to manipulate the yoke while watching a series of test patterns on the CRT, slowly tweaking the coils to bring everything into perfect alignment.

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Hack On Self: One Minute Blitz

Have you yet stumbled upon the principle of “consistently applied small amounts of work can guarantee completion of large projects”? I have, and it’s worked out well for me – on days when I could pay attention to them, that is.

A couple times, I’ve successfully completed long-term projects by making sure to do only a little bit of it, but I do it every day. It helps a lot with the feeling you get when you approach a large project – say, cleaning up your desk after a few days of heavy-duty hacking. If you’re multi-discipline, and especially if you happen to use multiple desks like me, a desk can stay occupied for a while.

Can you do one minute of desk cleaning today? Sure doesn’t feel like much time, or much effort. In a week’s time, however, you might just have a clean desk. Cleaning discrete messes is where this concept applies pretty well – you couldn’t wash floors like this, but you could wipe off the dust from a few surfaces for sure.

Now, I want to make this a habit – use it on like, seven different things a day. I wrote a script to make it possible – here’s how it works for me right now.

Building Upon The Seen-Before

I relied on a few previously-discussed things for this one. Main one is the Headphone Friend project – a pocketable Linux device, streaming audio from my laptop as I walk around my room. As a reminder, the headphones also have a button that emits HID events when pressed/released, and I have a small piece of software that can map actions to combinations of short-medium-long presses of that button.

Another necessity was a bit of software – dodging my questing system “away from laptop = system breaks” mistake, I wanted to put everything into my headphones, even the task names, trying to reach a “flow” through a series of 1-minute tasks. Of course, I reused the old sound library, but I also needed TTS generation on the fly! I went for PicoTTS with a simple wrapper – it’s not the best TTS system, but it’s damn fast, and perfectly suited for a prototype.

For the button-to-action mapping script, I had to expose some sort of API, to avoid merging the button scanning code and the task switching code. After a little deliberation, I picked websockets – they work decently well, and they’re quite portable, so I could run the button monitoring itself on the Headphone Friend device, and the main software on my laptop, for prototyping purposes.

Now, the more interesting question – how do I build the algorithm?

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Illustrated Kristina with an IBM Model M keyboard floating between her hands.

Keebin’ With Kristina: The One With The Cutting Board Keyboard

Doesn’t this look fantastic? Hard to believe it, but the base of this keyboard began life as a cutting board, and there’s a gallery to prove it. This is actually [androidbrick]’s second foray into this type of upcycling.

This time, [androidbrick] used a FiiO KB3 and replaced the bottom half of the plastic shell with a hand-routed kitchen cutting board. The battery has been disabled and it works only in wired mode, which is fine with me, because then you get to use a curly cord if you want.

A lovely keyboard built into a kitchen cutting board.
Image by [androidbrick] via reddit
The switches are mostly Gateron EF Currys, though [androidbrick] left some of the original Gateron G Pro 3.0 on the stabilized keys just for comparison. As you might imagine, the overall sound is much deeper with a wooden bottom. You can check out the sound test on YouTube if you’d like, though it’s pretty quiet, so turn it up.

Those keycaps look even nicer from top-down, which you’ll see in the sound test video linked above. Just search ‘JCM MOA GMK’ on Ali and you’ll find them in a bunch of colorways for around $20. Apparently, [androidbrick] was saving them for months, just waiting for this build.

Via reddit

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Hackaday Links: February 16, 2025

Just when you thought the saga of the Bitcoin wallet lost in a Welsh landfill was over, another chapter of the story appears to be starting. Regular readers will recall the years-long efforts of Bitcoin early adopter James Howells to recover a hard drive tossed out by his ex back in 2013. The disk, which contains a wallet holding about 8,000 Bitcoin, is presumed to be in a landfill overseen by the city council of Newport, which denied every request by Howells to gain access to the dump. The matter looked well and truly settled (last item) once a High Court judge weighed in. But the announcement that the Newport Council plans to cap and close the landfill this fiscal year and turn part of it into a solar farm has rekindled his efforts.

Howells and his investment partners have expressed interest in buying the property as-is, in the hopes of recovering the $780 million-ish fortune. We don’t think much of their odds, especially given the consistently negative responses he’s gotten over the last twelve years. Howells apparently doesn’t fancy his odds much either, since the Council’s argument that closing the landfill to allow him to search would cause harm to the people of Newport was seemingly made while they were actively planning the closure. It sure seems like something foul is afoot, aside from the trove of dirty diapers Howells seeks to acquire, of course.

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