Cheap Computer PSU Puts On Weight With Box Of Iron

December 12, 2023 by Tom Nardi 42 Comments

Humans are funny creatures. For whatever reason, when handling a piece of electronics, we tend to equate heft with value. If something feels too light, it gives the impression of being cheap or inferior. As such, it’s not unheard of for gadgets to include a little chunk of metal that serves no purpose other than to add weight.

But a recent discovery by the aptly named [RedditCringe990] really takes things to a new low. Upon opening up the cheap power supply that came with their computer case, they noticed an odd little box that didn’t appear to have any electrical connection to the rest of the device. After unscrewing it from the metal body of the power supply and pulling the bottom panel off, they found it was packed full of iron filings.

At some level, you have to appreciate the attention to detail here. At first glance, especially if you were peeking through the PSU’s air vents, you could be forgiven for thinking the box was some kind of transformer. It’s even got some alphanumeric gibberish written on the side to help complete the look. Makes us wonder how many of these things might actually have gone undetected by less curious PC-builders.

As you might expect, the weighted box is only one of the issues with this particular PSU. As pointed out by fellow Redditor [Hattix], even the functional components are worthy of suspicion. There’s no protection on the input or output, no safety capacitor, and (unsurprisingly) no regulatory marks.

We’d say the thing might still be useful as a boat anchor, but now that the box of iron fillings has been removed, it’s probably not even heavy enough. Stay safe out there, folks.

Artemis’ Next Giant Leap: Orbital Refueling

December 7, 2023 by Tom Nardi 32 Comments

By the end of the decade, NASA’s Artemis program hopes to have placed boots back on the Moon for the first time since 1972. But not for the quick sightseeing jaunts of the Apollo era — the space agency wants to send regular missions made up of international crews down to the lunar surface, where they’ll eventually have permanent living and working facilities.

The goal is to turn the Moon into a scientific outpost, and that requires a payload delivery infrastructure far more capable than the Apollo Lunar Module (LM). NASA asked their commercial partners to design crewed lunar landers that could deliver tens of tons of to the lunar surface, with SpaceX and Blue Origin ultimately being awarded contracts to build and demonstrate their vehicles over the next several years.

Starship and Blue Moon, note scale of astronauts

At a glance, the two landers would appear to have very little in common. The SpaceX Starship is a sleek, towering rocket that looks like something from a 1950s science fiction film; while the Blue Moon lander utilizes a more conventional design that’s reminiscent of a modernized Apollo LM. The dichotomy is intentional. NASA believes there’s a built-in level of operational redundancy provided by the companies using two very different approaches to solve the same goal. Should one of the landers be delayed or found deficient in some way, the other company’s parallel work would be unaffected.

But despite their differences, both landers do utilize one common technology, and it’s a pretty big one. So big, in fact, that neither lander will be able to touch the Moon until it can be perfected. What’s worse is that, to date, it’s an almost entirely unproven technology that’s never been demonstrated at anywhere near the scale required.

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Italy Proposes Minimalist Lunar Outpost For Artemis

December 4, 2023 by Tom Nardi 26 Comments

When humanity first step foot on the Moon, they couldn’t stay around for very long. The Apollo program was limited by the technology of the era — given the incredible cost per kilogram to put a payload down on the lunar surface, it wasn’t feasible to bring down enough consumables for a lengthy stay. Even if they could have carried sufficient food and water to last more than a few days, the limiting factor would have become how long the crew could realistically remain cooped up in the tiny Lunar Excursion Module (LEM).

In comparison, the Artemis program is far more ambitious. NASA wants to establish a long-term, and perhaps even permanent, human presence on our nearest celestial neighbor. This will be made possible, at least in part, to the greatly reduced launch costs offered by current and near-future launch vehicles compared to legacy platforms like the Saturn V or Space Shuttle. But cheaper rides to space is only part of the equation. NASA will also be leaning heavily on the lessons learned during the International Space Program; namely, the advantages of modular design and international cooperation.

While NASA and their commercial partners will still end up providing the bulk of the hardware for the Artemis program, many modules and components are being provided by other countries. From the Orion’s European Service Module (ESM) to the Japanese life support systems to be installed on the Lunar Gateway Station, America won’t be going to the Moon alone this time.

The latest international contribution to the Artemis program comes from the Italian Space Agency (ASI), who have announced their intention to develop a lunar habitation module they’re calling the Multi-Purpose Habitat (MPH) in collaboration with Thales Alenia Space.

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Wolfenstein 3D Clone Makes Arduboy Debut

December 3, 2023 by Tom Nardi 12 Comments

The 8-bit Arduboy isn’t exactly a powerhouse by modern gaming standards, or even really by old school standards for that matter. But for the talented developers that produce software for the system, that’s just part of the challenge. To date the monochromatic handheld has seen miniaturized takes on many well-known games, with several taxing the hardware beyond what most would have assumed possible.

But the latest entry into this catalog of improbable software, WolfenduinoFX, is easily the most technically impressive. As the name implies, this is a “demake” of 1992’s iconic Wolfenstein 3D. It features 10 levels based on the original game’s shareware release, with the enemies, weapons, and even secret rooms lovingly recreated for the Arduboy’s 128 x 64 OLED display.

Now, those of you who have experience working with the ATMega32u4 microcontroller at the heart of the Arduboy might think this is impossible…and you’d be right. The only way developer [James Howard] was able to pull this feat off was by leveraging the extended flash memory offered by the Arduboy FX.

This upgrade, which was developed in conjunction with the community, allows the handheld to hold hundreds of games by loading them from an SPI flash chip. For WolfenduinoFX, that flash chip is used to hold graphical assets for the game that would otherwise be too large to fit on the MCU alone.

When we looked at the Arduboy FX back in 2021, it was clearly a must-have upgrade, so it’s no wonder that the newest version of the handheld has the capability built-in. Now that games are actually requiring the expanded flash to function, it seems we’ve officially entered into a new era for the quirky little handheld that [Kevin Bates] first sent our way nearly a decade ago. Long live the Arduboy!

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Bulked Up MHD Drive Makes Waves While Standing Still

December 1, 2023 by Tom Nardi 35 Comments

Looking back through the archives, we actually haven’t seen much in the way of homebrew magnetohydrodynamic drives (MHDs) — which is somewhat surprising, as the core concept isn’t nearly as complicated as its syllable-laden name might indicate. You can see results with little more than a magnet, a couple of electrodes, and a bench power supply. The trick is turning these base components into something that might actually have practical value.

That’s where we find [Jay Bowles], who has gone down a bit of a MHD rabbit hole these last few months. His latest MHD unit is a considerable improvement over its predecessor by all practical metrics, and as an added bonus, really nails the look of a futuristic propulsion unit. Even though the all-electric thruster hasn’t gone on a mission to anywhere more exotic than a table-top aquarium, you could easily imagine a pair of them slung under some top secret stealth watercraft.

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End Of An Era: Popular Science Shutters Magazine

November 30, 2023 by Tom Nardi 69 Comments

Just three years after the iconic magazine abandoned its print version and went all-digital, Popular Science is now halting its subscription service entirely. The brand itself will live on — their site will still run tech stories and news articles, and they have two podcasts that will keep getting new episodes — but no more quarterly releases. While you can’t complain too much about a 151 year run, it’s still sad to see what was once such an influential publication slowly become just another cog in the content mill.

Started as a monthly magazine all the way back in 1872, Popular Science offered a hopeful vision of what was over the horizon. It didn’t present a fanciful version of what the next 100 years would look like, but rather, tried to read the tea leaves of cutting edge technology to offer a glimpse of what the next decade or so might hold. Flip through a few issues from the 1950s and 60s, and you won’t see pulpy stories about humanity conquering the stars or building a time machine. Instead the editors got readers ready for a day when they’d drive cars with warbird-derived turbochargers, and enjoy more powerful tools once transistor technology allowed for widespread use of small brushless motors. It wasn’t just armchair engineering either, issues would often include articles written by the engineers and researchers that were on the front lines. Continue reading “End Of An Era: Popular Science Shutters Magazine” →

Hackaday Podcast 245: The Silver Swan, ET’s Umbrella Antenna, Model Tanks Vs Space Shuttle Tires

November 24, 2023 by Tom Nardi No comments

This week, Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi link up through the magic of the Internet to go over some of their favorite stories from the last week. After revealing the bone-chilling winners of this year’s Halloween contest, the discussion switches over to old-timey automatons, receiving deep space transmissions with a homebrew antenna that would make E.T. proud, and the treasures that can be found while poking around in a modern car’s CAN bus.

They’ll also go over how NASA saved the taxpayers a bunch of money by hacking a remote controlled WWII tank, CNC controlled microscopes, and a cinema-quality camera you can probably build from what you’ve already got in the parts bin. Finally, they’ll detail an ambitious effort to recreate an old computer’s motherboard with a new feature in KiCad, and muse over all the interesting things that become possible once your test equipment can talk to your computer.

Check out the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Download and enjoy listening with a cold turkey sandwich.