Wireshark screenshot with QCSuper-produced packets streaming into it; QCSuper script running in an adjacent terminal

Turn Your Qualcomm Phone Or Modem Into Cellular Sniffer

April 30, 2024 by 16 Comments

If your thought repurposing DVB-T dongles for generic software defined radio (SDR) use was cool, wait until you see QCSuper, a project that re-purposes phones and modems to capture raw 2G/3G/4G/5G. You have to have a Qualcomm-based device, it has to either run rooted Android or be a USB modem, but once you find one in your drawers, you can get a steady stream of packets straight into your Wireshark window. No more expensive SDR requirement for getting into cellular sniffing – at least, not unless you are debugging some seriously low-level issues.

It appears there’s a Qualcomm specific diagnostic port you can access over USB, that this software can make use of. The 5G capture support is currently situational, but 2G/3G/4G capabilities seem to be pretty stable. And there’s a good few devices in the “successfully tested” list – given the way this software functions, chances are, your device will work! Remember to report whether it does or doesn’t, of course. Also, the project is seriously rich on instructions – whether you’re using Linux or Windows, it appears you won’t be left alone debugging any problems you might encounter.

This is a receive-only project, so, legally, you are most likely allowed to have fun — at least, it would be pretty complicated to detect that you are, unlike with transmit-capable setups. Qualcomm devices have pretty much permeated our lives, with Qualcomm chips nowadays used even in the ever-present SimCom modules, like the modems used in the PinePhone. Wondering what a sniffer could be useful for? Well, for one, if you ever need to debug a 4G base station you’ve just set up, completely legally, of course.

Squeeze Another Drive Into A Full-Up NAS

April 30, 2024 by 14 Comments

A network-attached storage (NAS) device is a frequent peripheral in home and office networks alike, yet so often these devices come pre-installed with a proprietary OS which does not lend itself to customization. [Codedbearder] had just such a NAS, a Terramaster F2-221, which while it could be persuaded to run a different OS, couldn’t do so without an external USB hard drive. Their solution was elegant, to create a new backplane PCB which took the same space as the original but managed to shoehorn in a small PCI-E solid-state drive.

The backplane rests in a motherboard connector which resembles a PCI-E one but which carries a pair of SATA interfaces. Some investigation reveals it also had a pair of PCI-E lanes though, so after some detective work to identify the pinout there was the chance of using those. A new PCB was designed, cleverly fitting an M.2 SSD exactly in the space between two pieces of chassis, allowing the boot drive to be incorporated without annoying USB drives. The final version of the board looks for all the world as though it was meant to be there from the start, a truly well-done piece of work.

Of course, if off-the-shelf is too easy for you, you can always build your own NAS.

You Can Use Visual Studio Code To Write Commodore 64 Assembly

April 29, 2024 by 16 Comments

Once upon a time, you might have developed for the Commodore 64 using the very machine itself. You’d use the chunky old keyboard, a tape drive, or the 1541 disk drive if you wanted to work faster. These days, though, we have more modern tools that provide a much more comfortable working environment. [My Developer Thoughts] has shared a guide on how to develop for the Commodore 64 using Visual Studio Code on Windows 11.

The video starts right at the beginning from a fresh Windows install, assuming you’ve got no dev tools to start with. It steps through installing git, Java, Kick Assembler, and Visual Studio Code. Beyond that, it even explains how to use these tools in partnership with VICE – the Versatile Commodore Emulator. That’s a key part of the whole shebang—using an emulator on the same machine is a far quicker way to develop than using real Commodore hardware. You can always truck your builds over to an actual C64 when you’ve worked the bugs out!

It’s a great primer for anyone who is new to C64 development and doesn’t know where to start. Plus, we love the idea of bringing modern version control and programming techniques to this ancient platform. Video after the break.

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Sound And Water Make Weird Vibes In Microgravity

April 29, 2024 by No comments

NASA astronaut [Don Pettit] shared a short video from an experiment he performed on the ISS back in 2012, demonstrating the effects of sound waves on water in space. Specifically, seeing what happens when a sphere of water surrounding an air bubble perched on a speaker cone is subjected to a variety of acoustic waves.

The result is visually striking patterns across different parts of the globe depending on what kind of sound waves were created. It’s a neat visual effect, and there’s more where that came from.

[Don] experimented with music as well as plain tones, and found that cello music had a particularly interesting effect on the setup. Little drops of water would break off from inside the sphere and start moving around the inside of the air bubble when cello music was played. You can see this in action as part of episode 160 from SmarterEveryDay (cued up to 7:51) which itself is about exploring the phenomenon of how water droplets can appear to act in an almost hydrophobic way.

This isn’t the first time water and sound collide in visually surprising ways. For example, check out the borderline optical illusion that comes from pouring water past a subwoofer emitting 24 Hz while the camera captures video at 24 frames per second.

A render of a BiC Cristal ballpoint pen showing the innards.

This Is How A Pen Changed The World

April 29, 2024 by 74 Comments

Look around you. Chances are, there’s a BiC Cristal ballpoint pen among your odds and ends. Since 1950, it has far outsold the Rubik’s Cube and even the iPhone, and yet, it’s one of the most unsung and overlooked pieces of technology ever invented. And weirdly, it hasn’t had the honor of trademark erosion like Xerox or Kleenex. When you ‘flick a Bic’, you’re using a lighter.

It’s probably hard to imagine writing with a feather and a bottle of ink, but that’s what writing was limited to for hundreds of years. When fountain pens first came along, they were revolutionary, albeit expensive and leaky. In 1900, the world literacy rate stood around 20%, and exorbitantly-priced, unreliable utensils weren’t helping.

Close-up, cutaway render of a leaking ballpoint pen. In 1888, American inventor John Loud created the first ballpoint pen. It worked well on leather and wood and the like, but absolutely shredded paper, making it almost useless.

One problem was that while the ball worked better than a nib, it had to be an absolutely perfect fit, or ink would either get stuck or leak out everywhere. Then along came László Bíró, who turned instead to the ink to solve the problems of the ballpoint.

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Tiny Arduino Drone Even Has An FPV Camera

April 29, 2024 by 15 Comments

In the turmoil of today’s world, drones are getting bigger, badder, and angrier. [Max Imagination] has gone the other way with his work, though, building a teeny Arduino drone that can fit in the palm of your hand. Even if you have a small hand!

The drone is based around an Arduino Pro Mini, and uses an MPU6050 IMU for motion sensing and flight control. Communication with the drone is via an NRF24L01. Four small coreless motors are used for propulsion, driven by tiny MOSFETs, and the whole assembly is run via a teeny 220 mAh lithium-polymer battery. Oh, and there’s an FPV camera so you can put on some goggles and see where it’s going!

Control is via MultiWii software, written specifically for building multirotor craft. [Max] flies the craft using a controller of his own creation, again using an NRF24L01 for communication.

It’s a neat build, and a titchy one too! Tiny drones have a character all their own, even if they can’t really stand up to windier outdoor environments. Video after the break.

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The board shown in real life, top and bottom, showing the pinout and alternate functions silkscreened.

A CH552G Devboard In Case You Missed It

April 29, 2024 by 10 Comments

We might just never get tired of covering cool small cheap MCUs, and CH552G sure fits this description. Just so you know, here’s a Hackaday.io project you should check out – a CH552G devboard that’s as simple as it sufficient, in case you needed a tangible reminder that this chip exists, has a lively community, and is very much an option for your projects.

The devboard design by [Dylan Turner] is so straightforward, it’s almost inspiring – a square of PCB with the chip in the center and plenty of empty space for your mods. Everything is open-source with KiCad sources stored on GitHub. The most lovely aspect of this board, no doubt, is having the pin mapping written on the bottom, with all the alternate pin functions – you won’t have to constantly glance at the datasheet while wiring this one up. Plus, of course, there’s the microUSB port for programming, and the programming mode button that a few CH552 projects tend to lack.

It’s simple, it’s self-documenting, it’s breadboardable, and it’s definitely worth putting into the shopping cart at your PCB fab of choice. Oh, and there are bringup instructions on GitHub, in case you need them. Whether you want to prototype the cheapest macropad or keyboard ever, or perhaps a reflow hotplate, the CH552 delivers. If these CH552 projects aren’t enough to light your fire, here are a dozen more.