Field Testing An Antenna, Using A Field
https://hackaday.com/2025/05/21/field-testing-an-antenna-using-a-field/
https://hackaday.com/2025/05/21/field-testing-an-antenna-using-a-field/
Hackaday
Field Testing An Antenna, Using A Field
The ARRL used to have a requirement that any antenna advertised in their publications had to have real-world measurements accompanying it, to back up any claims of extravagant performance. I’…
FLOSS Weekly Episode 833: Up and Over
https://hackaday.com/2025/05/21/floss-weekly-episode-833-up-and-over/
https://hackaday.com/2025/05/21/floss-weekly-episode-833-up-and-over/
Hackaday
FLOSS Weekly Episode 833: Up And Over
This week, Jonathan Bennett and Jeff Massie chat with Tom Herbert about eBPF, really fast networking, what the future looks like for high performance computing and the Linux Kernel, and more!
Honey, I Blew Up The Line Follower Robot
https://hackaday.com/2025/05/21/honey-i-blew-up-the-line-follower-robot/
https://hackaday.com/2025/05/21/honey-i-blew-up-the-line-follower-robot/
Hackaday
Honey, I Blew Up The Line Follower Robot
Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale. Now imagi…
High Voltage for Extreme Ozone
https://hackaday.com/2025/05/21/high-voltage-for-extreme-ozone/
https://hackaday.com/2025/05/21/high-voltage-for-extreme-ozone/
Hackaday
High Voltage For Extreme Ozone
Don’t you hate it when making your DIY X-ray machine you make an uncomfortable amount of ozone gas? No? Well [Hyperspace Pirate] did, which made him come up with an interesting idea. While creating…
Gene Editing Spiders to Produce Red Fluorescent Silk
https://hackaday.com/2025/05/21/gene-editing-spiders-to-produce-red-fluorescent-silk/
https://hackaday.com/2025/05/21/gene-editing-spiders-to-produce-red-fluorescent-silk/
Hackaday
Gene Editing Spiders To Produce Red Fluorescent Silk
Continuing the scientific theme of adding fluorescent proteins to everything that moves, this time spiders found themselves at the pointy end of the CRISPR-Cas9 injection needle. In a study by rese…
Jettison Sails for Electric Propulsion
https://hackaday.com/2025/05/21/jettison-sails-for-electric-propulsion/
https://hackaday.com/2025/05/21/jettison-sails-for-electric-propulsion/
Hackaday
Jettison Sails For Electric Propulsion
Although there are some ferries and commercial boats that use a multi-hull design, the most recognizable catamarans by far are those used for sailing. They have a number of advantages over monohull…
Roller Gearbox Allows For New Angles in Robotics
https://hackaday.com/2025/05/22/roller-gearbox-allows-for-new-angles-in-robotics/
https://hackaday.com/2025/05/22/roller-gearbox-allows-for-new-angles-in-robotics/
Hackaday
Roller Gearbox Allows For New Angles In Robotics
DIY mechatronics always has some unique challenges when relying on simple tools. 3D printing enables some great abilities but high precision gearboxes are still a difficult problem for many. Answer…
Trashed Sound System Lives to Rock another Day
https://hackaday.com/2025/05/22/trashed-sound-system-lives-to-rock-another-day/
https://hackaday.com/2025/05/22/trashed-sound-system-lives-to-rock-another-day/
Hackaday
Trashed Sound System Lives To Rock Another Day
Plenty of consumer goods, from passenger vehicles to toys to electronics, get tossed out prematurely for all kinds of reasons. Repairable damage, market trends, planned obsolescence, and bad design…
A Brief History of Fuel Cells
https://hackaday.com/2025/05/22/a-brief-history-of-fuel-cells/
https://hackaday.com/2025/05/22/a-brief-history-of-fuel-cells/
Hackaday
A Brief History Of Fuel Cells
If we asked you to think of a device that converts a chemical reaction into electricity, you’d probably say we were thinking of a battery. That’s true, but there is another device that …
Now KDE Users Will Get Easy Virtual Machine Management, Too
https://hackaday.com/2025/05/22/now-kde-users-will-get-easy-virtual-machine-management-too/
https://hackaday.com/2025/05/22/now-kde-users-will-get-easy-virtual-machine-management-too/
Hackaday
Now KDE Users Will Get Easy Virtual Machine Management, Too
If you work with virtual machines, perhaps to spin up a clean OS install for testing, historically you have either bitten the bullet and used one of the commercial options, or spent time getting yo…
Hackaday Supercon 2025 Call For Participation: We Want You!
https://hackaday.com/2025/05/22/hackaday-supercon-2025-call-for-participation-we-want-you/
https://hackaday.com/2025/05/22/hackaday-supercon-2025-call-for-participation-we-want-you/
Hackaday
Hackaday Supercon 2025 Call For Participation: We Want You!
We’re tremendously excited to be able to announce that the Hackaday Supercon is on for 2025, and will be taking place October 31st through November 2nd in Pasadena, California. Supercon is about br…
2025 Pet Hacks Contest: Loko Tracks Fido with LoRa and GPS
https://hackaday.com/2025/05/22/2025-pet-hacks-contest-loko-tracks-fido-with-lora-and-gps/
https://hackaday.com/2025/05/22/2025-pet-hacks-contest-loko-tracks-fido-with-lora-and-gps/
Hackaday
2025 Pet Hacks Contest: Loko Tracks Fido With LoRa And GPS
Some projects start as hacks, and end as products — that’s the case for [Akio Sato]’s project Loko, the LoRa/GPS tracker that was entered in our 2025 Pet Hacks Contest. The projec…
Building a Tiny Table Saw
https://hackaday.com/2025/05/22/building-a-tiny-table-saw/
https://hackaday.com/2025/05/22/building-a-tiny-table-saw/
Hackaday
Building A Tiny Table Saw
If you want a regular table saw, you’re probably best off just buying one—it’s hard to beat the economies of scale that benefit the major manufacturers. If you want a teeny one, though,…
You Can 3D Print These Assistive Typing Tools
https://hackaday.com/2025/05/22/you-can-3d-print-these-assistive-typing-tools/
https://hackaday.com/2025/05/22/you-can-3d-print-these-assistive-typing-tools/
Hackaday
You Can 3D Print These Assistive Typing Tools
Typing can be difficult to learn at the best of times. Until you get the muscle memory down, it can be quite challenging. However, if you’ve had one or more fingers amputated, it can be even …
Recovering Water From Cooling Tower Plumes With Plume Abatement
https://hackaday.com/2025/05/22/recovering-water-from-cooling-tower-plumes-with-plume-abatement/
https://hackaday.com/2025/05/22/recovering-water-from-cooling-tower-plumes-with-plume-abatement/
Hackaday
Recovering Water From Cooling Tower Plumes With Plume Abatement
As a common feature with thermal power plants, cooling towers enable major water savings compared to straight through cooling methods. Even so, the big clouds of water vapor above them are a clear …
Running DOOM on an Atari ST
https://hackaday.com/2025/05/22/running-doom-on-an-atari-st/
https://hackaday.com/2025/05/22/running-doom-on-an-atari-st/
Hackaday
Running DOOM On An Atari ST
If you grew up with a beige Atari ST on your desk and a faint feeling of being left out once Doom dropped in 1993, brace yourself — the ST strikes back. Thanks to [indyjonas]’s incredible hac…
Foil Leyden Jar Helps Bring Crookes Tube to Life
https://hackaday.com/2025/05/23/foil-leyden-jar-helps-bring-crookes-tube-to-life/
https://hackaday.com/2025/05/23/foil-leyden-jar-helps-bring-crookes-tube-to-life/
Hackaday
Foil Leyden Jar Helps Bring Crookes Tube To Life
It might be too soon to consider the innards of the old CRT monitor at the back of your closet to be something worth putting on display in your home or workshop. For that curio cabinet-worthy appea…
Behold Self-Synchronizing, Air-Flopping Limbs That Hop and Swim
https://hackaday.com/2025/05/23/behold-self-synchronizing-air-flopping-limbs-that-hop-and-swim/
https://hackaday.com/2025/05/23/behold-self-synchronizing-air-flopping-limbs-that-hop-and-swim/
Hackaday
Behold Self-Synchronizing, Air-Flopping Limbs That Hop And Swim
Dutch research institute [AMOLF] shows off a small robot capable of walking, hopping, and swimming without any separate control system. The limbs synchronize thanks to the physical interplay betwee…
This Week in Security: Signal DRM, Modern Phone Phreaking, and the Impossible SSH RCE
https://hackaday.com/2025/05/23/this-week-in-security-signal-drm-modern-phone-phreaking-and-the-impossible-ssh-rce/
https://hackaday.com/2025/05/23/this-week-in-security-signal-drm-modern-phone-phreaking-and-the-impossible-ssh-rce/
Hackaday
This Week In Security: Signal DRM, Modern Phone Phreaking, And The Impossible SSH RCE
Digital Rights Management (DRM) has been the bane of users since it was first introduced. Who remembers the battle it was getting Netflix running on Linux machines, or the literal legal fight over …
POV On The Flipper Zero
https://hackaday.com/2025/05/23/pov-on-the-flipper-zero/
https://hackaday.com/2025/05/23/pov-on-the-flipper-zero/
Hackaday
POV On The Flipper Zero
The Flipper Zero can do all kinds of neat stuff, like helping you cut keys or decode various radio transmissions. However, until now, it hasn’t been particularly adept at persistence of visio…