The Time Of Year For Things That Go Bump In The Night

Each year around the end of October we feature plenty of Halloween-related projects, usually involving plastic skeletons and LED lights, or other fun tech for decorations to amuse kids. It’s a highly commercialised festival of pretend horrors which our society is content to wallow in, but beyond the plastic ghosts and skeletons there’s both a history and a subculture of the supernatural and the paranormal which has its own technological quirks. We’re strictly in the realm of the science here at Hackaday so we’re not going to take you ghost hunting, but there’s still an interesting journey to be made through it all.

Today: Fun For Kids. Back Then: Serious Business

A marble carved skull on a 17th century monument in the church of st. Mary & st. Edburga, Stratton Audley, Oxfordshire.
English churches abound with marble-carved symbols of death.

Halloween as we know it has its roots in All Hallows Eve, or the day before the remembrance festivals of All Saint’s Day and All Soul’s Day in European Christianity. Though it has adopted a Christian dressing, its many trappings are thought to have their origin in pagan traditions such as for those of us where this is being written, the Gaelic Samhain (pronounced something like “sow-ain”). The boundary between living and dead was thought to be particularly porous at this time of year, hence all the ghosts and other trappings of the season you’ll see today.

Growing up in a small English village as I did, is to be surrounded by the remnants of ancient belief. They survive from an earlier time hundreds of years ago when they were seen as very real indeed, as playground rhymes at the village school or hushed superstitions such as that it would be bad luck to walk around the churchyard in an anticlockwise manner.

As a small child they formed part of the thrills and mild terrors of discovering the world around me, but of course decades later when it was my job to mow the grass and trim the overhanging branches in the same churchyard it mattered little which direction I piloted the Billy Goat. I was definitely surrounded by the mortal remains of a millennium’s worth of my neighbours, but I never had any feeling that they were anything but at peace. Continue reading “The Time Of Year For Things That Go Bump In The Night”

FLOSS Weekly Episode 853: Hardware Addiction; Don’t Send Help

This week Jonathan and Rob chat with Cody Zuschlag about the Xen project! It’s the hypervisor that runs almost everywhere. Why is it showing up in IoT devices and automotive? And what’s coming next for the project? Watch to find out!

Continue reading “FLOSS Weekly Episode 853: Hardware Addiction; Don’t Send Help”

This Reactor Is On Fire! Literally…

If I mention nuclear reactor accidents, you’d probably think of Three Mile Island, Fukushima, or maybe Chernobyl (or, now, Chornobyl). But there have been others that, for whatever reason, aren’t as well publicized. Did you know there is an International Nuclear Event Scale? Like the Richter scale, but for nuclear events. A zero on the scale is a little oopsie. A seven is like Chernobyl or Fukushima, the only two such events at that scale so far. Three Mile Island and the event you’ll read about in this post were both level five events. That other level five event? The Windscale fire incident in October of 1957.

If you imagine this might have something to do with the Cold War, you are correct. It all started back in the 1940s. The British decided they needed a nuclear bomb project and started their version of the Manhattan Project called “Tube Alloys.” But in 1943, they decided to merge the project with the American program.

The British, rightfully so, saw themselves as co-creators of the first two atomic bombs. However, in post-World War paranoia, the United States shut down all cooperation on atomic secrets with the 1946 McMahon Act.

We Are Not Amused

The British were not amused and knew that to secure a future seat at the world table, it would need to develop its own nuclear capability, so it resurrected Tube Alloys. If you want a detour about the history of Britan’s bomb program, the BBC has a video for you that you can see below.

Continue reading “This Reactor Is On Fire! Literally…”

Know Audio: Lossy Compression Algorithms And Distortion

In previous episodes of this long-running series looking at the world of high-quality audio, at every point we’ve stayed in the real world of physical audio hardware. From the human ear to the loudspeaker, from the DAC to measuring distortion, this is all stuff that can happen on your bench or in your Hi-Fi rack.

We’re now going for the first time to diverge from the practical world of hardware into the theoretical world of mathematics, as we consider a very contentious topic in the world of audio. We live in a world in which it is now normal for audio to have some form of digital compression applied to it, some of which has an effect on what is played back through our speakers and headphones. When a compression algorithm changes what we hear, it’s distortion in audio terms, but how much is it distorted and how do we even measure that? It’s time to dive in and play with some audio files. Continue reading “Know Audio: Lossy Compression Algorithms And Distortion”

Exploding The Mystical Craftsman Myth

As a Hackaday writer, I see a lot of web pages, social media posts, videos, and other tips as part of my feed. The  best ones I try to bring you here, assuming of course that one of my ever-vigilant colleagues hasn’t beaten me to it. Along the way I see the tropes of changing content creator fashion; those ridiculous pea-sized hand held microphones, or how all of a sudden everything has to be found in the woods. Some of them make me laugh, but there’s one I see a lot which has made me increasingly annoyed over the years. I’m talking of course about the craftsman myth.

No. The Last True Nuts And Bolts Are Not Being Made In Japan

If you don’t recognise the craftsman myth immediately, I’m sure you’ll be familiar with it even if you don’t realise it yet. It goes something like this: somewhere in Japan (or somewhere else perceived as old-timey in online audience terms like Appalachia, but it’s usually Japan), there’s a bloke in a tin shed who makes nuts and bolts.

But he’s not just any bloke in a tin shed who makes nuts and bolts, he’s a special master craftsman who makes nuts and bolts like no other. He’s about 120 years old and the last of a long line of nut and bolt makers entrusted with the secrets of nut and bolt making, father to son, since the 8th century. His tools are also mystical, passed down through the generations since they were forged by other mystical craftsmen centuries ago, and his forge is like no other, its hand-cranked bellows bring to life a fire using only the finest cedar driftwood charcoal. The charcoal is also made by a 120 year old master charcoal maker Japanese bloke whose line stretches back to the n’th century, yadda yadda. And when Takahashi-san finally shuffles off this mortal coil, that’s it for nuts and bolts, because the other nuts and bolts simply can’t compare to these special ones. Continue reading “Exploding The Mystical Craftsman Myth”

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Hackaday Links: October 26, 2025

There was a bit of a kerfuffle this week with the news that an airliner had been hit by space junk. The plane, a United Airlines 737, was operating at 36,000 feet on a flight between Denver and Los Angeles when the right windscreen was completely shattered by the impact, peppering the arm of one pilot with bits of glass. Luckily, the heavily reinforced laminated glass stayed intact, but the flight immediately diverted to Salt Lake City and landed safely with no further injuries. The “space junk” report apparently got started by the captain, who reported that they saw what hit them and that “it looked like space debris.”

We were a little skeptical of this initial assessment, mainly because the pilots and everyone aboard the flight were still alive, which we’d assume would be spectacularly untrue had the plane been hit by anything beyond the smallest bit of space junk. As it turns out, our suspicions were justified when Silicon Valley startup WindBorne Systems admitted that one of its high-altitude balloons hit the flight. The company, which uses HABs to gather weather data for paying customers, seems to have complied with all the pertinent regulations, like filing a NOTAM, so why the collision happened is a bit of a mystery.

Continue reading “Hackaday Links: October 26, 2025”

Get Ready For Supercon

It’s just about all we can think about over here: the week leading up to the 2025 Superconference. From what we hear, it’s all-hands-on over in Pasadena right now, as everyone is putting the finishing touches on preparations for Hackaday’s annual  US gathering.

We’ve been heads-down in the badge for a little while, and between that and all of the logistics, it’s easy to get lost in the work. And then we saw this video that [InstantArcade] shot, just casually walking through the event a couple years back. It’s not particularly a highlights reel, but seeing so many of the people I recognized, and remembering the many fantastic conversations we’d had. So much energy, interest, and simple excitement in sharing stories, what they’re working on, or just what they’ve seen lately that blew their mind.

There is no substitute for being there in person, but that doesn’t mean we’re not going to try! We’ll be putting the talks up on our YouTube channel next Saturday, and as always, you’re invited to join in the discussion on our Discord server both during the event and whenever. If you’re not going to be there in the alley, join us virtually!

We’ll be meeting up Thursday night at 7:00 pm at King’s Row for an informal pre-meetup. Bring a hack if you’ve got something to share! Then things start for real on Friday morning over at Supplyframe HQ. We’ll talk badges, get to know each other, and just nerd out and chill. (I love Fridays!) Halloween / sci-fi costume party Friday night, get some sleep, and head on over to the LACM and Design Lab for two tracks of talks and a full day on Saturday going late into the night. And as usual, the change back to standard time gets you an extra hour of sleep so that you’re rested and ready for Sunday.

There is still a lot to do behind the scenes, but seeing you all there makes it more than worth it! See you at Supercon.

(Oh, and no newsletter next week, but you can spend all day Saturday and Sunday watching the talks. That makes up for it, right?)