Broadcasting GPS On The Local Network To Help Geoclue Find You

Rather than having users go through the inconvenience of having to punch in their current location, an increasing number of applications and websites use location services that can pin-point the current location of a user to within a certain number of meters or kilometers.

Unfortunately, [Evert Pot] found that with the demise of the Mozilla Location Service (MLS) in 2024, accuracy of the Linux Geoclue service had dropped to a resolution of about 25 km. Since a LAN tends to not move around a lot, this seemed like the perfect time to help Geoclue out with a local GPS server.

All that Geoclue looks for on the LAN is an mDNS service identifying as _nmea-0183._tcp that responds with the GPS coordinates as network packets containing an ASCII payload encoded using the NMEA 0183 standard. With this knowledge [Evert] was then able to quickly put together a Python-based server that simply blasts the static GPS coordinates of the LAN in question.

With the service running, Gnome Maps and Firefox with Google Maps both displayed the right location down to the house, as can be seen in the screenshots. With the same LAN service and a Mac system there was no such luck with Apple Maps unless Location Services was turned off, though presumably Apple uses its own equivalent to MLS.

The ESP8266 Gets An OS, And It’s Familiar

A couple weeks back we brought you news of KernelUNO, a command line shell and very simple operating system for the Arduino Uno. It’s a neat idea, so it’s hardly surprising to see someone port it to another microcontroller and add more features.

Here’s [hery-torrado], with KernelESP for the ESP8266, which takes the original idea and adds a web console, scheduled jobs, sensor rules, scripting, NTP, and a JSON API. The networking using the ESP’s built-in WiFi takes the original and makes it significantly more useful.

It’s worth suggesting that the ability to call URLs with GET data to pass things to APIs would be useful on a networked processor too, but this is already so well featured it seems rude to ask for more. Yet again though, this project has given a new life to an old chip, and we think it has a way further to go. Perhaps a port to the ESP32 would allow it to reach its full potential, or maybe for a ridiculously cheap and powerful platform, the CH32 series of chips. We look forward to see what more will come from KernelUNO.

Our original coverage can be read here.

ReactOS Gets Unified Installer Image And A New Storage Stack

Although the ReactOS project is in no rush to dethrone Windows as the desktop operating system of choice, this doesn’t mean that some real changes aren’t happening. Most recently two big changes got merged, the first pertaining to the separate boot- and live CD images that are now merged into a single image, and the second being a new PnP-aware ATA storage stack for ATA and AHCI devices, with NT6+ compatibility.

Although there is still a separate live CD for now, this first change means that testing and installing ReactOS becomes easier, and that the old-school text-based installer may soon be on its way out as well.

Having the new ATA storage stack in place will translate into much better compatibility with real hardware, including the ability to use more hardware to install on and boot from compared to the old UniATA driver.

Combined, these two changes should bring the ReactOS installation and usage experience a lot closer to that of Windows, as well as many Linux distros. If you had issues with the OS on real hardware, this might be just the right time to give it another shake and provide detailed feedback to the developers if any remaining issues are encountered.

Thanks to [jeditobe] for the tip.

New Slicer Enables Horizontal Overhangs Without Support

There’s a rule of thumb when it comes to FDM printing that overhangs are really only possible to an angle of around 45 degrees or so. If you try to squirt out plastic with nothing supporting it, it just goes everywhere. However, a new slicer hopes to enable printing up to 90-degree overhangs with some creative techniques.

The software that enables this is called WaveOverhangs, and currently exists as a fork of OrcaSlicer. The idea is straightforward enough — using unique toolpathing to create rings of deposited material that fasten to those laid down before them in the same layer. Thus as the printer lays down a layer into bare space, the deposited plastic is, ideally, able to fix on to the supported edge. As the next ring is laid down, it grabs on to the cooled ring laid down before it, and so on. The idea is inspired by wave propagation, hence the name. You can see a demonstration of the software in the video below by [Cocoanix 3D Printing].

It’s still a very new technique. The slicer has a whole bunch of knobs to turn and two different algorithms. Get the settings just right and you can print horizontal overhangs successfully. There aren’t exactly presets yet, this is something to explore with trial and error. If you test it out, don’t forget to upload your results to the Community Gallery so the developers can see what works and what doesn’t.

We’ve explored how smart slicers can do amazing things before, too, particularly when it comes to things like bridging.

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Rack Cage Generator Gets Your Gear Mounted

Sometimes, as hackers and makers, we can end up with messy lashed-together gear that is neither reliable nor tidy. Rackmounting your stuff can be a great way to improve the robustness and liveability of your setup. If you find this appealing, you might like CageMaker by [WebMaka].

This parametric OpenSCAD script can generate mounts for all kinds of stuff. Maybe you have a little network switch that’s just a tangle of wires on your desk, or a few pieces of audio gear that are loosely stacked on top of each other and looking rather unkempt. It would be trivial with this tool to create some 3D printed adapters to get all that stuff laced up nice and neat in a rack instead.

If you’re eager to get tinkering, you can try out the browser-based version quite easily. We’ve featured similar work before, too—many a maker has trod the path of rackmounting, as it turns out.

PSX Development With Unity And LUA

The Unity game development platform was first released in 2005, long after the PlayStation had ceased to be a relevant part of the console market. And yet, you could use Unity to develop for the platform, if you so desire, thanks to the efforts of [Bandwidth] and the team behind psxsplash. 

Yes, it really is possible to design games for the original PlayStation using Unity and Lua. Using a tool called SplashEdit, you can whip up scenes, handle scripting, loading screens, create UIs, and do all the other little bits required to lash a game together. You can then run your creation via the psxsplash engine, deploying to emulator or even real hardware with a single click. Currently, development requires a Windows or Linux machine and Unity 6000.0+, but other than that, it’s pretty straightforward to start making games with a modern toolset for one of the most popular consoles of all time. Just remember, you’ve only got 33 MHz and 2MB of RAM to play with.

We still love to see the legendary grey machine get used and hacked in new and inventive ways, so many decades after release.

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Three-Monitor Ridge Racer Machine Emulated In MAME

When Ridge Racer hit the arcades in the early 1990s, it came in a few different versions. The last variant used three large CRTs to create a wraparound display for the player. Incredibly rare, it’s believed that only a single-digit number of machines remain in existence. [beaumotplage] has secured a remaining example, and been working to preserve this historical artifact.

The first mission when it comes to this machine was to dump the ROMs, which have thus far not been preserved in any major archive. With that done, [beaumotplage] worked to hack a version of MAME that could emulate the Three Monitor Version’s unique mode of operation. As it turns out, each screen is driven by its own arcade board, with the three boards linked via C139 serial links. To emulate this, the trick was simply to write some C139 linkup code and run three versions of MAME all at once, letting them communicate with each other as the original boards would have. It’s a little janky in operation right now, but it does work!

You can download the hacked version of MAME for three-monitor operation here, though note that this does not include the ROM dumps from the machine itself. We look forward to seeing if the hardware ends up getting a full restoration back to operational standard, too.

Overall, this work goes to show that arcade preservation and archival work sometimes requires getting deep into the nitty-gritty technical stuff.

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