Two maps of London turned into hexagonal regions heat mapped from white to peach to purple. The left map is according to: density, ratings, surprise, cuisine diversity, and independent share. The map on the right of merged data assigns the dominant hub type in a region. Purple is assigned a value of "Elite", reddish orange is "Strong", peach is "Everyday", and white/grey is "Weak." The five locations deemed to be the highest scorers were Ealing-Acton, Kingston Upon Thames, Enfield, Bromley, and Havering.

Google Maps Killed The Restaurant Star

We all know that Google and other big players pick and choose what information people see, but we sometimes overlook it outside of the search and social media space. [Lauren Leek] decided to take a look at how Google Maps picks winners and losers in the restaurant scene in London.

Building a machine learning model to determine a new restaurant recommendation (as one does), [Leek] uncovered interesting, and perhaps concerning, elements of how Google Maps ranks restaurants. Broken down by relevance, proximity, and prominence, many new restaurants face the issue of not drawing traffic without reviews and vice-versa causing a vicious cycle. Relevance and proximity are fairly straightforward, but what goes into “prominence?”

[Leek] found that “it is not just what people think of a place – it is how often people interact with it, talk about it, and already recognise it.” This leads to chains and high foot traffic areas awash in reviews while more out-of-the-way places find it more difficult to draw traffic. Some of this is expected and would be happening even when word of mouth was the primary way to find out where to eat, but as with many things, the algorithm amplifies this, along with the undisclosed paid placement of restaurants in Maps results.

While still in its infancy, [Leek] built a public dashboard where people can sort restaurants in the city. The machine learning algorithm is designed to identify places that are hidden gems that punch above their Google Maps weight and may make you look like the trendy one (if you live in London).

Zooming out further, [Leek] found larger clusters that revealed restaurant “diversity, in other words, is not just about taste. It is about where families settled, which high streets remained affordable long enough for a second generation to open businesses, and which parts of the city experienced displacement before culinary ecosystems could mature.”

If you want to step outside the algorithm mayhem, how about a good old-fashioned Web Ring? We’ve also addressed what’s an AI versus an algorithm, and Cory Doctorow advised us on how to reverse course on the current wave of enshittification.

Detection Of A Four-Carbon Sugar In Interstellar Space

Although life tends to find a way, something first has to kickstart said lifeforms. Exactly how the first biological cells formed on Earth – and potentially on other worlds – remains an enduring mystery. Some theories point to the early Earth’s surface conditions as a viable laboratory for the self-assembly of the first viable membranes, RNA, DNA and associated molecular machinery, while seeding of the Earth’s primitive atmosphere by sugars and other precursors from asteroids and kin is required in other theories.

Recently [Izaskun Jiménez-Serra] et al. added to this debate with the reported detection of four-carbon sugars in the form of erythrulose in the interstellar medium. Using the 40 meter radio telescope at Yebes and the 30 meter radio telescope at Granada the signatures of this sugar was detected in a molecular cloud near the center of the Milky Way.

These sugars likely form on these interstellar dust grains from more basic two-carbon aldehydes and alcohols, with them providing conceivably a source of energy for early metabolic processes of developing lifeforms. This specific type of sugar is highly prevalent in Earth’s fruits, and thus its prevalence in interstellar space is at the very least an interesting coincidence, if not another puzzle piece in the overarching question of abiogenesis.

Sail Virtually Aboard The “Itanic” With IA-64 Emulator

Intel’s Itanium architecture was an interesting experiment, but it has gone down in history as one of the chip giant’s bigger flops, so much so that it earned the name “Itanic” in the tech press. This is perhaps unfair, considering it did limp on until a quiet EOL in 2020. We didn’t know anyone missed it, but perhaps it was more the technical challenge than nostalgia for obsolete server hardware that led [Yufeng Gao] and [gdwnldsKSC] to spin up an instruction-set translator for the late, lamented, IA-64 architecture.

Note that it’s very much in alpha, version 0.1, so don’t expect all the things. Neither HP-UX and OpenVMS will boot, which is a pity since Itanium’s great success was arguably winning those OSes and thereby killing the bespoke architectures HP and DEC had at the time. Gentoo can get to a shell, as long as you use Kernel 6.6 or older, and Windows Server 2003 and XP-64 both apparently boot.

It’s not incredibly performant, with 486-level speeds when running on Ryzen 5000 series hardware, but then, it is a 64-bit hardware being emulated here, and pretty weird hardware at that. Itanium’s Very Long Word Instruction architecture was notoriously hard to program well. Specifically, it was hard to compile optimized programs for, so we expect optimizing an emulator is going to be similarly difficult. That’s why this is so impressive, even at this early stage.

The late, unlamented Itanium is probably one of the few systems not in the Virtual OS Museum, but perhaps eventually this project will change that.

via Raymii.org

A quadcopter with a clear, U-shaped shield up front and red propellers navigates between a close stand of moss-covered trees.

Echolocation For Drones

Bats are remarkable creatures, able to fly at night or inside the confines of caves without light to guide their way. A team of researchers at Worcester Polytechnic Institute (WPI) has determined how to use low power ultrasonic sensors to guide drones in obscured environments.

While radar, lidar, and GPS are all great for navigation and sensing, they can run into issues when light is obscured or can take too much power to be practical for the limited battery life of a drone. The researchers found that a dual sonar array could be used to implement a much lower power sensing system for a drone that performs well in environments that would stymie a computer vision system.

A shield placed behind the array cuts down on the sound of the propellers that would otherwise drown out the signal, and further signal analysis via a neural net separates the echoes of objects in front of the drone from the background. The prototype could navigate in various simulated environments like forests, smoke, and snow. It looks like it even got a chance to go for a flight in the actual woods. All the code and hardware designs are Open Source, so have at it!

We’ve covered mosquito-inspired drone sensors before, and if you want to get into echolocation yourself, apparently humans can learn to do it too.

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A Feature-Rich Drum Machine

A little over a month ago, we featured a project from [Igor] who built 64 bits of DRAM from scratch using discrete components. Jokes about memory pricing aside, he did have a use case for such a small amount of memory — he is using it in a custom-built drum machine. But featuring the memory build and not the drum machine was perhaps putting the cart before the horse, so in this video, [Igor] shows off the construction of each part of his impressive 16- or 64-step sequence drum machine.

This isn’t Igor’s first drum machine, either, although his previous build was a bit more limited. It had fewer steps in the sequence and didn’t quite have the range of his newer model. The upgraded version can play more steps but also includes force-sensitive drum pads based on piezo sensors and more voices (drums) as well. Each voice is built electronically using various op-amps and passive components, and [Igor] has the schematics for each of them, as well as every other part of the drum machine, for those looking to recreate any part of this on their own. There’s a lot going on in this lengthy video as well, so for the musically inclined, it’s worth taking a look in full.

Now that our horse is in the correct position in front of the cart, it’s worth going back and looking at the memory build if you missed it when it first ran. A small amount of memory makes the machine programmable rather than just playable, and truly expands the capabilities of a machine like this in the recording studio.

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Hackaday Europe 2026: Project Gigapixel

There was once a race to put out cameras with ever higher numbers of megapixels to snare customers eager to take the highest quality digital photos. These days, we know that things like optics, processing, and finer qualities of an image sensor are all very important beyond pure resolution. But, for a time, companies behaved as if megapixels mattered over all else.

But what if you could go farther—shooting not millions, but billions of pixels in a single image? That’s precisely what [Yannick Richter] came to Hackaday Europe to talk about, covering his Project Gigapixel build.

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Old SSDs Find New Life As Game Cartridges

Game companies might not like physical media much anymore, but gamers sure do. There’s nothing like pawing over your collection to find what to play, and inserting a cartridge with a satisfying click before sitting down to an old-school game like — wait, Cyberpunk 2077? Yeah, that wasn’t released on cartridge, but that didn’t stop [Jibril-sama] over on Reddit. The cartridges are 3D printed — stls on makeworld only, as of this writing — and contain old 2.5″ SSDs that [Jabril] was able to pick up in bulk.

This larger base seems ideal for building into a PC console, but either would work.

Inside the base unit is a simple USB3-SATA adapter that hooks to [Jabril]’s gaming PC. There are two versions of the base unit: a simple vertical unit, and a horizontal one with some springs to give a satisfying grip.

On each disk is a launch script that is vetted by a program on the PC that autolaunches only the cartridges you’ve told it to trust, which is a level of security we can appreciate. [Jabril-sama] has kindly made that available under the MIT license on GitHub.

We don’t know how much life is left in these cheap drives, but they should last a while if the only write is the odd save file. Hopefully [Jabril-sama] is cycling through his games fairly often, as SSDs are only non-volatile storage if your time horizon is short enough.

Thanks to [iliis] for the tip! Remember, if you use our tips line to share what you find, you’re not doomscrolling, you’re doing a public service.