Hello, Halloween Hackfest!

September 19, 2023 by Elliot Williams 1 Comment

Halloween is possibly the hackiest of holidays. Think about it: when else do you get to add animatronic eyes to everyday objects, or break out the CNC machine to cut into squashes? Labor day? Nope. Proximity-sensing jump-scare devices for Christmas? We think not. But for Halloween, you can let your imagination run wild!

We’re happy to announce that DigiKey and Arduino have teamed up for this year’s Hackaday Halloween Contest. Bring us your best costume, your scariest spook, your insane home decorations, your wildest pumpkin, or your most kid-pleasing feat!

We’ll be rewarding the top three with a $150 gift certificate courtesy of DigiKey, plus some Arduino Halloween treats if you use a product from the Arduino Pro line to make your hair-raising fantasy happen.

We’ve also got five honorable mention categories to inspire you to further feats of fancy.

Costume: Halloween is primarily about getting into outrageous costumes and scoring candy. We don’t want to see the candy.
Pumpkin: Pumpkin carving could be as simple as taking a knife to a gourd, but that’s not what we’re after. Show us the most insane carving method, or the pumpkin so loaded with electronics that it makes Akihabara look empty in comparison.
Kid-Pleaser: Because a costume that makes a kid smile is what Halloween is really all about. But games or elaborate candy dispensers, or anything else that helps the little ones have a good time is fair game here.
Hallowed Home: Do people come to your neighborhood just to see your haunted house? Do you spend more on light effects than on licorice? Then show us your masterpiece!
Spooky: If your halloween build is simply scary, it belongs here.

Head on over to Hackaday.io for the full details. And get working on your haunts, costumes, and Rube Goldberg treat dispensers today.

Inspiration

September 16, 2023 by Elliot Williams 55 Comments

While we were debating about whether it even makes any sense to reboot RadioShack, or indeed any brick-and-mortar electronics store in the modern era, Dan Maloney and I stumbled on what probably is the real source of all of our greybeard nostalgia for the store chain: inspiration.

For both of us, the appeal of a store like RadioShack was going through the place and thinking of what you’d do with all of those parts. Looking at the back of the beefiest MOSFET in the joint, you’d think about all the current you could pass with it. Or what you’d do with all of those piezo buzzers. And if you didn’t know yet what electronics project you wanted to make, there were things like the Forrest Mims notebooks to inspire you. There you’d find a way to turn the humble LED into a light sensor, whether you needed to or not. I wonder how many packs of assorted LEDs that book sold?!

Dan got his first hands on with a computer in RadioShack as well, because they let folks try them right there. If you didn’t know what you wanted a computer for, and that was the big question of the early microcomputer era, you could head into the store yourself and find out. Seeing, and playing with, Demon Dancer inspired.

A lot of this role is taken over by hackerspaces these days, and even more is taken by the Internet itself, of course. We have no shortage of inspiration – just read a day’s worth of Hackaday if you don’t believe me. So is there any room left for RadioShack’s inspirational role? Maybe not. But if that’s the cost of living in a world where we have access to more great ideas than we’ll ever have time to execute, then so be it!

Agreeing By Disagreeing

September 9, 2023 by Elliot Williams 35 Comments

While we were working on the podcast this week, Al Williams and I got into a debate about the utility of logic analyzers. (It’s Hackaday, after all.) He said they’re almost useless these days, and I maintained that they’re more useful than ever. When we got down to it, however, we were actually completely in agreement – it turns out that when we said “logic analyzer” we each had different machines, and use cases, in mind.

Al has a serious engineering background and a long career in his pocket. When he says “logic analyzer”, he’s thinking of a beast with a million probes that you could hook up to each and every data and address line in what would now be called a “retrocomputer”, giving you this god-like perspective on the entire system state. (Sounds yummy!) But now that modern CPUs have 64-bits, everything’s high-speed serial, and they’re all deeply integrated on the same chip anyway, such a monster machine is nearly useless.

Meanwhile, I’m a self-taught hacker type. When I say “logic analyzer”, I’m thinking maybe 8 or 16 signals, and I’m thinking of debugging the communications between a microcontroller, an IMU, or maybe a QSPI flash chip. Heck, sometimes I’ll even break out a couple pins on the micro for state. And with the proliferation of easy and cheap modules, plus the need to debug and reverse commodity electronics, these logic analyzers have never been more useful.

So in the end, it was a simple misunderstanding – a result of our different backgrounds. His logic analyzers were extinct or out of my price range, and totally off my radar. And he thinks of my logic analyzer as a “simple serial analyzer”. (Ouch! But since when are 8 signals “serial”?)

And in the end, we both absolutely agreed on the fact that great open-source software has made the modern logic analyzers as useful as they are, and the lack thereof is also partially responsible for the demise of the old beasts. Well, that and he needs a lab cart then to carry around what I can slip in my pocket today. Take that!

To Give Is Better Than To Receive

September 2, 2023 by Elliot Williams 24 Comments

Better to give a talk at a hacker event, that is. Or in your hackerspace, or even just to a bunch of fellow nerds whenever you can. When you give the talk, don’t be afraid to make it too “easy” to understand. Making a tough topic comprehensible is often the sign that you really understand it, after all, and it’s also a fantastic service to the audience. And also don’t be afraid that your talk isn’t “hard core” enough, because with a diverse enough crowd, there will absolutely be folks for whom it’s still entirely new, and they’ll be thankful.

These were the conclusions I got from talking to a whole range of people at Chaos Communication Camp the weekend before last, and it’s one of the great opportunities when you go to an event like this. At Camp, there were a number of simultaneous stages, and with so many talks that new ones are still being released. That meant that everyone had their chance to say their bit, and many many did.

And that’s great. Because it’s obvious that getting the work done, or diving deep into a particular topic, is part of the hacker experience, but it’s also equally important to share what you’ve gained with the rest of the community. The principle of spreading the knowledge is a cornerstone of our culture, and getting people up to talk about what they’ve learned is the manifestation of this cultural value. If you know something, say something!

Of course, when you’re not at a conference, you could be writing up your hacks and sending them in to the tips line (hint, hint!). That’ll work too.

How Do They Do That?

August 26, 2023 by Elliot Williams 20 Comments

Last week’s Chaos Communication Camp is kinda a big deal: 6,000 hackers all out in a field all need power, food, drink, networking, and of course, sewage in the middle of nowhere. Oh yeah, plus video services on multiple simultaneous stages, custom phone infrastructure, a postal service, and even a diesel train. How is that even possible to run with only volunteers? How do they even know how to run something this scale?

My wife asked me this question while we were driving up to Berlin, and the answer is of course the same as it is to “Excuse me, can you tell me how to get to Carnegie Hall?” Practice.

But it’s not just practice. It’s also passing down the lessons learned to the next generation, making procedures that are not 100% dependent on the people doing the jobs, but can be passed on to the next volunteer willing to pick up the torch.

And then I was interviewing [Jens Ohlig] and [Mitch Altman] about the early days of the second wave hackerspaces in America for the podcast. (Some great interviews – go check it out!) The central story there is essentially the same: the critical missing ingredient that lead to the blossoming of US hackerspaces was simply a set of instructions and design principles – drawing on the experience of established hackerspaces.

Sharing information is a fundamental cornerstone of the hacker ethic, and it gives the next hacker a leg up. Contributes to the global hive mind. And it makes things possible that would otherwise seem impossible. Pushing the hacker state-of-the-art is what Hackaday is all about, and we’re used to thinking of it in terms of a particular microcontroller library, but seeing how the same sharing makes impossible logistics possible was inspirational. Don’t be afraid to start small and iterate – and take good notes.

LaForge Demystifies ESIM

August 22, 2023 by Elliot Williams 8 Comments

This talk at Chaos Communications Camp 2023 is probably everything you want to know about eSIM technology, in just under an hour. And it’s surprisingly complicated. If you’ve never dug into SIMs before, you should check out our intro to eSIMs first to get your feet wet, but once you’re done, come back and watch [LaForge]’s talk.

In short, the “e” stands for “embedded”, and the eSIM is a self-contained computer that virtualises everything that goes on inside your plain-old SIM card and more. All of the secrets that used to be in a SIM card are stored as data on an eSIM. This flexibility means that there are three different types of eSIM, for machine-to-machine, consumer, and IoT purposes. Because the secret data inside the eSIM is in the end just data, it needs to be cryptographically signed, and the relevant difference between the three flavors boils down to three different chains of trust.

Whichever eSIM you use, it has to be signed by the GSM Alliance at the end of the day, and that takes up the bulk of the talk time in the end, and in the excellent Q&A period at the end where the hackers who’ve obviously been listening hard start trying to poke holes in the authentication chain. If you’re into device security, or telephony, or both, this talk will open your eyes to a whole new, tremendously complex, playground.

Chaos And Camping

August 19, 2023 by Elliot Williams 14 Comments

In a field somewhere north of Berlin right now, around 5,500 hackers and their family members are blinking, coding, building, giving talks, and simply hanging out. Once every four years, the German hacker scene gathers and gets burned by the day star, despite the ample warnings to apply copious sunscreen.

CCCamp is a must-attend-it-to-get-it type event, but it’s also chock-full of talks on numerous stages, and these you can see from the comfort of your own home without even getting a mosquito bite! We loved [Harald Welte]’s complete guide to the mysterious world of eSIMS, for instance.

What’s most amazing about Camp, though, is that it brings together hackers of all ages and interests. Someone with a tape-measure direction-finding radio, probably participating in the foxhunt, just walked behind another group learning yoga. There is UV tape art and a stinky diesel train. Old greybeards mingle with kids, all playing with the bubble machines. Two folks are playing bocce with old hard drives. I think one camp was working on an autonomous model boat.

Everyone brings what they’re interested in, shares it, and helps anyone else get started if they’re interested. It’s a hacker paradise, even if just for a few days every four years.