Ask Hackaday: Where Are All the Fuel Cells?
?w=800" alt=""/>Given all the incredible technology developed or improved during the Apollo program, it’s impossible to pick out just one piece of hardware that made humanity’s first crewed landing on another https://hackaday.com/2025/08/21/ask-hackaday-where-are-all-the-fuel-cells/
https://hackaday.com/2025/08/21/ask-hackaday-where-are-all-the-fuel-cells/
CAL 3D Printing Spins Resin Right Round, Baby
?w=800" alt=""/>Computed Axial Lithography (CAL) is a lighting-fast form of volumetric 3D printing that holds incredible promise for the future, and [The Action Lab] filmed it in action at a Berkeley https://hackaday.com/2025/08/21/cal-3d-printing-spins-resin-right-round-baby/
https://hackaday.com/2025/08/21/cal-3d-printing-spins-resin-right-round-baby/
Playing DOOM on the Anker Prime Charging Station
?w=800" alt=""/>At this point the question is no longer whether a new device runs DOOM, but rather how well. In the case of Anker’s Prime Charging Station it turns out that https://hackaday.com/2025/08/21/playing-doom-on-the-anker-prime-charging-station/
https://hackaday.com/2025/08/21/playing-doom-on-the-anker-prime-charging-station/
Let’s Brief You on Recent Developments for Electrostatic Motors
?w=800" alt="A photo for a motor and a meter on a bench."/>Over on his YouTube channel [Ryan Inis] has a video about how electrostatic motors are breaking all the rules. He explains that these days most motors are electromagnetic but suggests that https://hackaday.com/2025/08/20/lets-brief-you-on-recent-developments-for-electrostatic-motors/
https://hackaday.com/2025/08/20/lets-brief-you-on-recent-developments-for-electrostatic-motors/
One-Motor Drone Mimics Maple Seeds For Stability
?w=712" alt=""/>We’ve seen aircraft based on “helicopter” seeds (technically samara seeds, which include those of maples and elms) before, but this recent design from researchers at the Singapore University of Technology https://hackaday.com/2025/08/20/one-motor-drone-mimics-maple-seeds-for-stability/
https://hackaday.com/2025/08/20/one-motor-drone-mimics-maple-seeds-for-stability/
Carry your Grayscale Memories with this Tiny Gameboy Photo Frame
?w=800" alt=""/>While we cannot be certain this is the world’s smallest digital photo frame, [Raphaël Boichot]’s Pico Slide Show is probably in the running. Since the 0.85″ TFT display would be https://hackaday.com/2025/08/20/carry-your-grayscale-memories-with-this-tiny-gameboy-photo-frame/
https://hackaday.com/2025/08/20/carry-your-grayscale-memories-with-this-tiny-gameboy-photo-frame/
Hide Capacitive Touch Buttons In Your Next 3D Print
?w=692" alt=""/>Capacitive touch sensors are entirely in the domain of DIY, requiring little more than a carefully-chosen conductive surface and a microcontroller. This led [John Phillips] to ask why not embed https://hackaday.com/2025/08/20/hide-capacitive-touch-buttons-in-your-next-3d-print/
https://hackaday.com/2025/08/20/hide-capacitive-touch-buttons-in-your-next-3d-print/
FLOSS Weekly Episode 843: Money Usually Helps
?w=800" alt=""/>This week Jonathan and Dan chat with Farid Abdelnour about Kdenlive! It’s top quality video editing software, and happens to be what we use to edit the show! What’s next https://hackaday.com/2025/08/20/floss-weekly-episode-843-money-usually-helps/
https://hackaday.com/2025/08/20/floss-weekly-episode-843-money-usually-helps/
Instant Macropad: Just Add QMK
?w=800" alt=""/>I recently picked up one of those cheap macropads (and wrote about it, of course). It is surprisingly handy and quite inexpensive. But I felt bad about buying it. Something https://hackaday.com/2025/08/20/instant-macropad-just-add-qmk/
https://hackaday.com/2025/08/20/instant-macropad-just-add-qmk/
Building a Robotic Arm Without Breaking the Bank
?w=800" alt=""/>There are probably at least as many ways to construct a robotic arm as there are uses for them. In the case of [Thomas Sanladerer] his primary requirement for the https://hackaday.com/2025/08/20/building-a-robotic-arm-without-breaking-the-bank/
https://hackaday.com/2025/08/20/building-a-robotic-arm-without-breaking-the-bank/
Death of the Cheque: Australia Moves On
?w=800" alt=""/>Check (or cheques) have long been a standard way for moving money from one bank account to another. They’re essentially little more than a codified document that puts the necessary https://hackaday.com/2025/08/20/death-of-the-cheque-australia-moves-on/
https://hackaday.com/2025/08/20/death-of-the-cheque-australia-moves-on/
Thermal Batteries for Lower Carbon Industrial Processes
?w=800" alt="A photo of a large warehouse with many skylights and windows near the roof. In the middle of the image extending out into the distance are hundreds of grey refractory bricks stacked on top of a smaller set of brown bricks stacked on top of pallets. There appear to be rails on the floor of the warehouse and small dollies underneath the pallets."/>Heating things up is one of the biggest sources of cost and emissions for many industrial processes we take for granted. Most of these factories are running around the clock https://hackaday.com/2025/08/20/thermal-batteries-for-lower-carbon-industrial-processes/
https://hackaday.com/2025/08/20/thermal-batteries-for-lower-carbon-industrial-processes/
Reviving a Piece of Yesterday’s Tomorrow
?w=800" alt="Front and back of the replacement OLED module by Sir68k"/>To anyone who remembers Y2K, Sony’s MiniDisc format will probably always feel futuristic. That goes double for Sony’s MZ-RH1, the last MiniDisk recorder ever released, back in 2006. It’s barely https://hackaday.com/2025/08/20/reviving-a-piece-of-yesterdays-tomorrow/
https://hackaday.com/2025/08/20/reviving-a-piece-of-yesterdays-tomorrow/
Using Ultra-Wideband for 3D Location and Tracking
?w=800" alt="A diagram with one Tag and two Base Stations."/>Interested in playing with ultra-wideband (UWB)? [Jaryd] recently put together a fairly comprehensive getting started guide featuring the AI Thinker BU03 that looks like a great place to start. These modules https://hackaday.com/2025/08/19/using-ultra-wideband-for-3d-location-and-tracking/
https://hackaday.com/2025/08/19/using-ultra-wideband-for-3d-location-and-tracking/
Lisp in 99 Lines of C With TinyLisp
?w=800" alt=""/>As one of the oldest programming languages still in common use today, and essential for the first wave of Artificial Intelligence research during the 1950s and 60s, Lisp is often https://hackaday.com/2025/08/19/lisp-in-99-lines-of-c-with-tinylisp/
https://hackaday.com/2025/08/19/lisp-in-99-lines-of-c-with-tinylisp/
A Solderless, Soluble Circuit Board
?w=800" alt="A brown plastic circuit board is visible in the middle of the picture, containing an integrated circuit, a resistor, a diode, two capacitors, and some jumper wires going away to the sides."/>Anyone who’s spent significant amounts of time salvaging old electronics has probably wished there were a way to take apart a circuit board without desoldering it. [Zeyu Yan] et al https://hackaday.com/2025/08/19/a-solderless-soluble-circuit-board/
https://hackaday.com/2025/08/19/a-solderless-soluble-circuit-board/
Roll Your Own SSB Receiver
?w=800" alt=""/>[Paul Maine] was experimenting with GNU Radio and an RTL-SDR dongle. He created an SSB receiver and, lucky for us, he documented it all in a video you can see https://hackaday.com/2025/08/19/roll-your-own-ssb-receiver/
2025 One Hertz Challenge: Atomic Decay Clock is Accurate But Not Precise
?w=800" alt=""/>At this point, atomic clocks are old news. They’ve been quietly keeping our world on schedule for decades now, and have been through several iterations with each generation gaining more https://hackaday.com/2025/08/19/2025-one-hertz-challenge-atomic-decay-clock-is-accurate-but-not-precise/
Food Irradiation Is Not As Bad As It Sounds
?w=800" alt=""/>Radiation is a bad thing that we don’t want to be exposed to, or so the conventional wisdom goes. We’re most familiar with it in the context of industrial risks https://hackaday.com/2025/08/19/food-irradiation-is-not-as-bad-as-it-sounds/
https://hackaday.com/2025/08/19/food-irradiation-is-not-as-bad-as-it-sounds/
The VLF Transformation
?w=800" alt=""/>People have long been interested in very low frequency (VLF) radio signals. But it used to be you pretty much had to build your own receiver which, luckily, wasn’t as https://hackaday.com/2025/08/19/the-vlf-transformation/
Hackaday Links: August 17, 2025
?w=800" alt="Hackaday Links Column Banner"/>We’ve studiously avoided any mention of our latest interstellar visitor, 3I/Atlas, on these pages, mainly because of all the hoopla in the popular press about how Avi Loeb thinks it’s https://hackaday.com/2025/08/17/hackaday-links-august-17-2025/
https://hackaday.com/2025/08/17/hackaday-links-august-17-2025/
2025 One Hertz Challenge: STM32 Blinks In Under 50 Bytes
?w=743" alt=""/>Many of us have run a Blink program on a microcontroller before. It’s effectively the “Hello, World!” of the embedded space. However, few of us have ever thought about optimizing https://hackaday.com/2025/08/16/2025-one-hertz-challenge-stm32-blinks-in-under-50-bytes/
https://hackaday.com/2025/08/16/2025-one-hertz-challenge-stm32-blinks-in-under-50-bytes/
Running Guitar Effects on a PlayStation Portable
?w=800"/>If your guitar needs more distortion, lower audio fidelity, or another musical effect, you can always shell out some money to get a dedicated piece of hardware. For a less https://hackaday.com/2025/08/13/running-guitar-effects-on-a-playstation-portable/
https://hackaday.com/2025/08/13/running-guitar-effects-on-a-playstation-portable/
Creating a New Keyboard Flex for an Old Calculator
?w=800" alt=""/>[Menadue] had a vintage Compucorp 326 calculator with an aging problem. Specifically, the flex cable that connects the button pad had turned corroded over time. However, thanks to the modern https://hackaday.com/2025/08/12/creating-a-new-keyboard-flex-for-an-old-calculator/
https://hackaday.com/2025/08/12/creating-a-new-keyboard-flex-for-an-old-calculator/
2025 One Hertz Challenge: Abstract Aircraft Sculpture Based On Lighting Regulations
?w=800" alt=""/>The 2025 One Hertz Challenge is really heating up with all kinds of projects that do something once every second. [The Baiko] has given us a rather abstract entry that https://hackaday.com/2025/08/12/2025-one-hertz-challenge-abstract-aircraft-sculpture-based-on-lighting-regulations/
Current Source Mixes Old School and New
?w=800" alt=""/>At first glance, [RobBest]’s constant current source looks old school. The box is somewhat old-fashioned, featuring switches and binding posts. Most importantly, there’s a large analog meter dominating the front https://hackaday.com/2025/08/12/current-source-mixes-old-school-and-new/
https://hackaday.com/2025/08/12/current-source-mixes-old-school-and-new/
Neon Bulbs? They’re a Gas!
?w=800" alt=""/>When you think of neon, you might think of neon signs or the tenth element, a noble gas. But there was a time when neon bulbs like the venerable NE-2 https://hackaday.com/2025/08/11/neon-bulbs-theyre-a-gas/
End Of The Eternal September, As AOL Discontinues Dial-Up
?w=800" alt=""/>If you used the internet at home a couple of decades or more ago, you’ll know the characteristic sound of a modem connecting to its dial-up server. That noise is https://hackaday.com/2025/08/11/end-of-the-eternal-september-as-aol-discontinues-dial-up/
https://hackaday.com/2025/08/11/end-of-the-eternal-september-as-aol-discontinues-dial-up/
Light Transport and Constructing Images From a Projector’s Point of View
?w=800" alt=""/>Imagine you have a projector pointing at a scene, which you’re photographing with a camera aimed from a different point. Using the techniques of modelling light transport, [okooptics] has shown https://hackaday.com/2025/08/07/light-transport-and-constructing-images-from-a-projectors-point-of-view/
The 64-Degree Egg, And Other Delicious Variants
?w=800" alt=""/>Many of us have boiled an egg at some point or another in our lives. The conventional technique is relatively straightforward—get the water boiling, drop the egg in, and leave https://hackaday.com/2025/08/07/the-64-degree-egg-and-other-delicious-variants/
https://hackaday.com/2025/08/07/the-64-degree-egg-and-other-delicious-variants/
Can a Thermal Printer Cure ADHD?
?w=800" alt=""/>No, of course not. Per Betteridge’s law, that’s the answer to any headline with a question mark. On the other hand, while a thermal printer might not cure ADHD, it https://hackaday.com/2025/08/06/can-a-thermal-printer-cure-adhd/
https://hackaday.com/2025/08/06/can-a-thermal-printer-cure-adhd/
Real-Time Beamforming with Software-Defined Radio
?w=800" alt=""/>It is perhaps humanity’s most defining trait that we are always striving to build things better, stronger, faster, or bigger than that which came before. Taller skyscrapers, longer bridges, and https://hackaday.com/2025/08/05/real-time-beamforming-with-software-defined-radio/
https://hackaday.com/2025/08/05/real-time-beamforming-with-software-defined-radio/
Brilliant Labs Has New Smart Glasses, With a New Display
?w=800" alt=""/>Brilliant Labs have been making near-eye display platforms for some time now, and they are one of the few manufacturers making a point of focusing on an open and hacker-friendly https://hackaday.com/2025/08/04/brilliant-labs-has-new-smart-glasses-with-a-new-display/
https://hackaday.com/2025/08/04/brilliant-labs-has-new-smart-glasses-with-a-new-display/
Open Source 5-Axis Printer Has Its Own Slicer
?w=800" alt=""/>Three-axis 3D printing has been with us long enough that everybody knows the limitations, but so far, adding extra axes has been very much a niche endeavor. [Daniel] at Fractal https://hackaday.com/2025/08/04/open-source-5-axis-printer-has-its-own-slicer/
https://hackaday.com/2025/08/04/open-source-5-axis-printer-has-its-own-slicer/
The Scourge of Fake Retro Unijunction Transistors
?w=800" alt=""/>We all know that it’s easy to get caught out by fake electronic components these days, with everything from microcontrollers to specialized ASICs being fair game. More recently, retro components https://hackaday.com/2025/08/04/the-scourge-of-fake-retro-components-like-unijunction-transistors/
https://hackaday.com/2025/08/04/the-scourge-of-fake-retro-components-like-unijunction-transistors/
Rebuilt Batteries for the Cutest Clamshell at the Cafe
?w=800" alt=""/>Keeping retrocomputers going can be tricky enough, but when you’re talking retro laptops, the battery packs add an extra challenge. While one could simply live without the battery, that’s not https://hackaday.com/2025/08/03/rebuilt-batteries-for-the-cutest-clamshell-at-the-cafe/
https://hackaday.com/2025/08/03/rebuilt-batteries-for-the-cutest-clamshell-at-the-cafe/
One Man’s Trash… Bicycle Edition
?w=800" alt=""/>[Remy van Elst] found an obsolete bike navigation system, the Navman Bike 1000, in a thrift store for €10. The device was a rebadged Mio Cyclo 200 from 2015. Can https://hackaday.com/2025/07/30/one-mans-trash-bicycle-edition/
https://hackaday.com/2025/07/30/one-mans-trash-bicycle-edition/
Linux Fu: The Cheap Macropad Conundrum
?w=800" alt=""/>You can get cheap no-brand macropads for almost nothing now. Some of them have just a couple of keys. Others have lots of keys, knobs, and LEDs. You can spring https://hackaday.com/2025/07/30/linux-fu-the-cheap-macropad-conundrum/
https://hackaday.com/2025/07/30/linux-fu-the-cheap-macropad-conundrum/
Engrave a Cylinder Without a Rotary Attachment? No Problem!
?w=800" alt=""/>Laser-engraving a cylindrical object usually requires a rotary attachment, which is a motorized holder that rotates a cylindrical object in sync with the engraver. But [Samcraft] shows that engraving all https://hackaday.com/2025/07/26/engrave-a-cylinder-without-a-rotary-attachment-no-problem/
https://hackaday.com/2025/07/26/engrave-a-cylinder-without-a-rotary-attachment-no-problem/
Personalization, Industrial Design, and Hacked Devices
?w=800" alt=""/>[Maya Posch] wrote up an insightful, and maybe a bit controversial, piece on the state of consumer goods design: The Death Of Industrial Design And The Era Of Dull Electronics. https://hackaday.com/2025/07/26/personalization-industrial-design-and-hacked-devices/
https://hackaday.com/2025/07/26/personalization-industrial-design-and-hacked-devices/
Transparent PCBs Trigger 90s Nostalgia
?w=800" alt=""/>What color do you like your microcontroller boards? Blue? Red? Maybe white or black? Sadly, all of those are about to look old hat. Why? Well, as shared by [JLCPCB], https://hackaday.com/2025/07/25/transparent-pcbs-trigger-90s-nostalgia/
https://hackaday.com/2025/07/25/transparent-pcbs-trigger-90s-nostalgia/
Game dev on iBook G4 with NetBSD
?w=800" alt=""/>What can you do with a laptop enough to drink even in the Puritan ex-colonies? 21 years is a long time for computer hardware– but [Chris] is using his early-2004 https://hackaday.com/2025/07/23/game-dev-on-ibook-g4-with-netbsd/
https://hackaday.com/2025/07/23/game-dev-on-ibook-g4-with-netbsd/
Coleco Adam: A Commodore 64 Competitor, Almost
?w=800" alt="a Coleco Adams console on a desk"/>For a brief, buzzing moment in 1983, the Coleco Adam looked like it might out-64 the Commodore 64. Announced with lots of ambition, this 8-bit marvel promised a complete computing https://hackaday.com/2025/07/21/coleco-adam-a-commodore-64-competitor-almost/
https://hackaday.com/2025/07/21/coleco-adam-a-commodore-64-competitor-almost/
A Field Guide to the North American Cold Chain
?w=800" alt=""/>So far in the “Field Guide” series, we’ve mainly looked at critical infrastructure systems that, while often blending into the scenery, are easily observable once you know where to look. https://hackaday.com/2025/07/17/a-field-guide-to-the-north-american-cold-chain/
https://hackaday.com/2025/07/17/a-field-guide-to-the-north-american-cold-chain/
Robots Want the Jobs You Can’t Do
?w=800" alt=""/>There’s something ominous about robots taking over jobs that humans are suited to do. Maybe you don’t want a job turning a wrench or pushing a broom, but someone does. https://hackaday.com/2025/07/14/robots-want-the-jobs-you-cant-do/
https://hackaday.com/2025/07/14/robots-want-the-jobs-you-cant-do/
AI Might Kill Us All (With Carbon Emissions)
?w=800" alt=""/>So-called artificial intelligence (AI) is all the rage right now between your grandma asking ChatGPT how to code in Python or influencers making videos without having to hire extras, but https://hackaday.com/2025/07/03/ai-might-kill-us-all-with-carbon-emissions/
https://hackaday.com/2025/07/03/ai-might-kill-us-all-with-carbon-emissions/
The Ongoing BcacheFS Filesystem Stability Controversy
?w=800" alt=""/>In a saga that brings to mind the hype and incidents with ReiserFS, [SavvyNik] takes us through the latest data corruption bug report and developer updates regarding the BcacheFS filesystem https://hackaday.com/2025/06/10/the-ongoing-bcachefs-filesystem-stability-controversy/
https://hackaday.com/2025/06/10/the-ongoing-bcachefs-filesystem-stability-controversy/
Information Density: Microfilm and Microfiche
?w=800" alt=""/>Today, we think nothing of sticking thousands of pages of documents on a tiny SD card, or just pushing it out to some cloud service. But for decades, this wasn’t https://hackaday.com/2025/06/09/information-density-microfilm-and-microfiche/
https://hackaday.com/2025/06/09/information-density-microfilm-and-microfiche/
Texas’ Right to Repair Bill is a Signature Away From Becoming Law
?w=800" alt=""/>In what could be a big step forward for consumer rights, the Texas Senate recently unanimously voted to pass HB 2963, which references the “Diagnosis, maintenance, and repair of certain https://hackaday.com/2025/06/09/texas-right-to-repair-bill-is-a-signature-away-from-becoming-law/
https://hackaday.com/2025/06/09/texas-right-to-repair-bill-is-a-signature-away-from-becoming-law/
Simple Triggering for Saleae Logic Analyzers
?w=800" alt="The Saleae logic analyzer software is shown. One PWM channel is active, with values of 0x0001 displayed above the individual waveforms. On the right panel of the app, a trigger mode configuration panel is open for the simple parallel analyzer."/>Saleae logic analyzers seem to have it all: good sampling rates, convenient protocol decoding, and plenty of channels – but not a good way to set rising or falling-edge triggering. https://hackaday.com/2025/06/08/simple-triggering-for-saleae-logic-analyzers/
https://hackaday.com/2025/06/08/simple-triggering-for-saleae-logic-analyzers/
A Close Look at the Mitxela Precision Clock Mk IV
?w=800" alt=""/>Over on his secondary YouTube channel, [Jeff Geerling] recently demoed the new Mitxela Precision Clock Mk IV. This clock uses GPS to get the current time, but also your location https://hackaday.com/2025/06/08/a-close-look-at-the-mitxela-precision-clock-mk-iv/
https://hackaday.com/2025/06/08/a-close-look-at-the-mitxela-precision-clock-mk-iv/
ChatGPT Patched a BIOS Binary, and it Worked
?w=800" alt=""/>[devicemodder] wrote in to let us know they managed to install Linux Mint on their FRP-locked Panasonic Toughpad FZ-A2. Android devices such as the FZ-A2 can be locked with Factory https://hackaday.com/2025/06/07/chatgpt-patched-a-bios-binary-and-it-worked/
https://hackaday.com/2025/06/07/chatgpt-patched-a-bios-binary-and-it-worked/
When Wireless MIDI Has Latency, a Hardwired Solution Saves the Day
?w=800" alt=""/>[Moby Pixel] wanted to build a fun MIDI controller. In the end, he didn’t build it just once, but twice—with the aim of finding out which microcontroller was most fit https://hackaday.com/2025/06/07/when-wireless-midi-has-latency-a-hardwired-solution-saves-the-day/
https://hackaday.com/2025/06/07/when-wireless-midi-has-latency-a-hardwired-solution-saves-the-day/
In Film, What’s Old May Still Be New Again
?w=800" alt=""/>We recently published an affectionate look at a Polaroid Land camera, whose peel-apart instant film is long out of production except for a very few single exposure packs form a https://hackaday.com/2025/06/06/in-film-whats-old-may-still-be-new-again/
https://hackaday.com/2025/06/06/in-film-whats-old-may-still-be-new-again/
Supercon 2024: From Consultant to Prototyper On A Shoestring Budget
?w=800" alt=""/>Many engineers graduate from their studies and head out into the workforce, seeking a paycheck and a project at some existing company or other. Often, it’s not long before an https://hackaday.com/2025/06/05/supercon-2024-from-consultant-to-prototyper-on-a-shoestring-budget/
https://hackaday.com/2025/06/05/supercon-2024-from-consultant-to-prototyper-on-a-shoestring-budget/
Piko, Your ESP32 Powered Fitness Buddy
?w=800" alt="The bill of materials and the assembled smartwatch."/>Over on Hackaday.io there’s a fun and playful write-up for a fun and playful project — the Piko, an ESP32 powered smartwatch. Our hackers [Iloke Alusala], [Lulama Lingela], and [Rafael https://hackaday.com/2025/06/05/piko-your-esp32-powered-fitness-buddy/
https://hackaday.com/2025/06/05/piko-your-esp32-powered-fitness-buddy/
The Blackberry Keyboard: How An Open-Source Ecosystem Sprouts
?w=800" alt=""/>What could happen when you open-source a hardware project? No, seriously. I hold a fair few radical opinions – one is that projects should be open-source to the highest extent https://hackaday.com/2025/06/04/the-blackberry-keyboard-how-an-open-source-ecosystem-sprouts/
https://hackaday.com/2025/06/04/the-blackberry-keyboard-how-an-open-source-ecosystem-sprouts/
Tune In to “Higher Lower”, the Minimal Handheld Electronic Game
?w=800" alt=""/>[Tommy] has a great write-up about designing and building a minimalistic handheld electronic game called “Higher Lower”. It’s an audio-driven game in which the unit plays two tones and asks https://hackaday.com/2025/06/04/tune-in-to-higher-lower-the-minimal-handheld-electronic-game/
https://hackaday.com/2025/06/04/tune-in-to-higher-lower-the-minimal-handheld-electronic-game/
Supercon 2024: How To Track Down Radio Transmissions
?w=800" alt=""/>You turn the dial on your radio, and hear a powerful source of interference crackle in over the baseline noise. You’re interested as to where it might be coming from. https://hackaday.com/2025/06/03/supercon-2024-how-to-track-down-radio-transmissions/
https://hackaday.com/2025/06/03/supercon-2024-how-to-track-down-radio-transmissions/