Turning A Quansheng Handheld Into A Neat Desktop Transceiver

October 28, 2024 by 18 Comments

The Quansheng UV-K5 is a popular handheld radio. It’s useful out of the box, but also cherished for its modification potential. [OM0ET] purchased one of these capable VHF/UHF radios, but got to hacking—as he wanted to use it as a desktop radio instead!

This might just sound like a simple reshell, but there was actually a bit of extra work involved. Most notably, the Quansheng is designed to be tuned solely by using the keypad. For desktop use, though, that’s actually kind of a pain. Thus, to make life easier, [OM0ET] decided to whip up a little encoder control to handle tuning and other control tasks using an ESP32. This was achieved with help from one [OM0WT] and files for that are on Github. Other tasks involved finding a way to make the keypad work in a new housing, and how to adapt things like the audio and data module and the speaker to their new homes.

Despite the original handheld being much smaller than the case used here, you’d be surprised how tight everything fits in the case. Still, the finished result looks great. We’ve seen some other adaptable and upgradable ham radio gear before, too. Sometimes custom is the way to go! Video after the break.

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The Woodworker’s Cyberdeck

October 28, 2024 by 9 Comments

Computers were supposed to be personal, customizable, and cool. At times, in this cold modern world, we forget that. However, the cyberdeck scene is chock full of people building creative, original computers that suit their own tastes, aesthetics, and needs. [DIY Tinkerer] is one such individual, and he made the most of his woodworking skills when it came time to build his own cyberdeck!

The technological basics are along the lines of what we’re used to in this field. The build is based around a Raspberry Pi 4, with [DIY Tinkerer] selecting an 8 GB model for his needs. It’s paired with a 9000 mAh onboard battery, and there’s a power jack on the front to let the thing run on anything from 5 to 20 volts DC. For ease of use, there’s a multi-memory card reader and several USB 3 ports available.

The rest of the video focuses on the woodworking side of things. [DIY Tinkerer] shows us how he managed to build a new housing out of a rugged plastic case that would also be practical to use. The final product is both functional and attractive, and comes with an oscilloscope built in to boot! It came a long way from his earlier build, too.

We’ve seen a great load of cyberdeck builds over the years.

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Word Of The Day Calendar Is Great Use Of E-Paper

October 28, 2024 by 12 Comments

If you’re trying to learn a new language, there are always a lot of words to learn. A word-of-the-day calendar can help, and they’re often readily available off the shelf. Or, you can grab some hardware and build your own, as [daedal-tech] did!

The project was built as a gift to help [daedal-tech]’s partner with their efforts to pick up French. Thus, a Raspberry Pi Zero 2W was employed and paired with a small Waveshare e-Paper display. These were stuffed inside a fancy light switch plate from Hobby Lobby and a small stand, the pair of which act as a pretty nice little frame for the build. The Pi runs a small Python script which employs the BeautifulSoup4 library and the Python Image library. Basically, the script grabs French words and spits them out on the display with a small description such that one might understand their meaning.

It’s a simple build, but one that has some real utility and is fun to boot. We might see more word clocks than calendars around these parts, but we love both all the same!

FreeBSD At 30: The History And Future Of The Most Popular BSD-Based OS

October 28, 2024 by 40 Comments

Probably not too many people around the world celebrated November 1st, 2023, but on this momentous date FreeBSD celebrated its 30th birthday. As the first original fork of the first complete and open source Unix operating system (386BSD) it continues the legacy that the Berkeley Software Distribution (BSD) began in 1978 until its final release in 1995. The related NetBSD project saw its beginnings somewhat later after this as well, also forking from 386BSD. NetBSD saw its first release a few months before FreeBSD’s initial release, but has always followed a different path towards maximum portability unlike the more generic nature of FreeBSD which – per the FAQ – seeks to specialize on a limited number of platforms, while providing the widest range of features on these platforms.

This means that FreeBSD is equally suitable for servers and workstations as for desktops and embedded applications, but each platform gets its own support tier level, with the upcoming version 15.x release only providing first tier support for x86_64 and AArch64 (ARMv8). That said, if you happen to be a billion-dollar company like Sony, you are more than welcome to provide your own FreeBSD support. Sony’s Playstation 3, Playstation 4 and Playstation 5 game consoles namely all run FreeBSD, along with a range of popular networking and NAS platforms from other big names. Clearly, it’s hard to argue with FreeBSD’s popularity.

Despite this, you rarely hear people mention that they are running FreeBSD, unlike Linux, so one might wonder whether there is anything keeping FreeBSD from stretching its digital legs on people’s daily driver desktop systems?

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Video Provides Rare Look Inside China’s Space Station

October 28, 2024 by 71 Comments

China has a space station — it’s called Tiangong, the first module was launched in 2021, and it’s all going quite swimmingly, thank you very much. That’s essentially what we know about the orbital complex here in the West, as China tends to be fairly secretive when it comes to their activities in space.

But thanks to a recently released video by the state-funded CCTV Video News Agency, we now have an unprecedented look inside of humanity’s newest orbital laboratory. Shenzhou-18 crew members [Ye Guangfu], [Li Cong], and [Li Guangsu] provide viewers with a full-blown tour of the station, and there’s even baked-in English subtitles so you won’t miss a beat.

The few looks the public has gotten inside of Tiangong in the past have been low-resolution and generally of the “shaky cam” variety. In comparison, this flashy presentation was clearly made to impress an international audience. But let’s be fair, if you managed to build your own crewed station in low Earth orbit, wouldn’t you want to show it off a bit? Continue reading “Video Provides Rare Look Inside China’s Space Station” →

Lock-In Thermography On A Cheap IR Camera

October 28, 2024 by 17 Comments

Seeing the unseen is one of the great things about using an infrared (IR) camera, and even the cheap-ish ones that plug into a smartphone can dramatically improve your hardware debugging game. But even fancy and expensive IR cameras have their limits, and may miss subtle temperature changes that indicate a problem. Luckily, there’s a trick that improves the thermal resolution of even the lowliest IR camera, and all it takes is a little tweak to the device under test and some simple math.

According to [Dmytro], “lock-in thermography” is so simple that his exploration of the topic was just a side quest in a larger project that delved into the innards of a Xinfrared Xtherm II T2S+ camera. The idea is to periodically modulate the heat produced by the device under test, typically by ramping the power supply voltage up and down. IR images are taken in synch with the modulation, with each frame having a sine and cosine scaling factor applied to each pixel. The frames are averaged together over an integration period to create both in-phase and out-of-phase images, which can reveal thermal details that were previously unseen.

With some primary literature in hand, [Dmytro] cobbled together some simple code to automate the entire lock-in process. His first test subject was a de-capped AD9042 ADC, with power to the chip modulated by a MOSFET attached to a Raspberry Pi Pico. Integrating the images over just ten seconds provided remarkably detailed images of the die of the chip, far more detailed than the live view. He also pointed the camera at the Pico itself, programmed it to blink the LED slowly, and was clearly able to see heating in the LED and onboard DC-DC converter.

The potential of lock-in thermography for die-level debugging is pretty exciting, especially given how accessible it seems to be. The process reminds us a little of other “seeing the unseeable” techniques, like those neat acoustic cameras that make diagnosing machine vibrations easier, or even measuring blood pressure by watching the subtle change in color of someone’s skin as the capillaries fill.

The Pound ( Or Euro, Or Dollar ) Can Still Be In Your Pocket

October 27, 2024 by 88 Comments

A British journalistic trope involves the phrase “The pound in your pocket”, a derisory reference to the 1960s Prime Minister Harold Wilson’s use of it to try to persuade the public that a proposed currency devaluation wouldn’t affect them. Nearly six decades later not so many Brits carry physical pounds in their pockets as electronic transfers have become more prevalent, but the currency remains. So much so that the governor of the Bank of England has had to reassure the world that the pound won’t be replaced by a proposed “Britcoin” cryptocurrency should that be introduced.

Normally matters of monetary policy aren’t within Hackaday’s remit, but since the UK is not the only country to mull over the idea of a tightly regulated cryptocurrency tied to their existing one, there’s a privacy angle to be considered while still steering clear of the fog of cryptocurrency enthusiasts. The problem is that reading the justification for the new digital pound from the Bank of England, it’s very difficult to see much it offers which isn’t already offered by existing cashless payment systems. Meanwhile it offers to them a blank regulatory sheet upon which they can write any new rules they want, and since that inevitably means some of those rules will affect digital privacy in a negative manner, it should be a worry to anyone whose government has considered the idea. Being at pains to tell us that we’ll still be able to see a picture of the King (or a dead President, or a set of bridges) on a bit of paper thus feels like an irrelevance as increasingly few of us handle banknotes much anyway these days. Perhaps that act in itself will now become more of an act of protest. And just when we’d persuaded our hackerspaces to go cashless, too.

Header: Wikitropia, CC BY-SA 3.0.