RFID From First Principles and Saving a Cat
https://hackaday.com/2024/11/23/rfid-from-first-principles-and-saving-a-cat/

[Dale Cook] has cats, and as he readily admits, cats are jerks. We’d use stronger language than that, but either way it became a significant impediment to making progress with …read more (https://hackaday.com/2024/11/23/rfid-from-first-principles-and-saving-a-cat/)

$40 Ham Antenna Works Six Bands
https://hackaday.com/2024/11/23/40-ham-antenna-works-six-bands/

[My Ham Radio Journey] wanted to see if a “common person” (in his words) could build an effective vertical ham radio antenna. If you look at the video below, the …read more (https://hackaday.com/2024/11/23/40-ham-antenna-works-six-bands/)

Hacking the Soil to Combat Desertification
https://hackaday.com/2024/11/24/hacking-the-soil-to-combat-desertification/

While the Sahara Desert is an important ecosystem in its own right, its human neighbors in the Sahel would like it to stop encroaching on their environment. [Andrew Millison] took …read more (https://hackaday.com/2024/11/24/hacking-the-soil-to-combat-desertification/)

Modular Multi-Rotor Flies Up To Two Hours
https://hackaday.com/2024/11/24/modular-multi-rotor-flies-up-to-two-hours/

Flight time remains the Achilles’ heel of electric multi-rotor drones, with even high-end commercial units struggling to stay airborne for an hour. Enter Modovolo, a startup that’s shattered this limitation …read more (https://hackaday.com/2024/11/24/modular-multi-rotor-flies-up-to-two-hours/)

RISC CPU Lives in Excel
https://hackaday.com/2024/11/24/risc-cpu-lives-in-excel/

Last time we checked in on [Inkbox], he had made a 16-bit CPU in Excel. Impressive, but not really practical. Presumably, his latest project isn’t any more practical, but we …read more (https://hackaday.com/2024/11/24/risc-cpu-lives-in-excel/)

Flyback, Done Right
https://hackaday.com/2024/11/24/flyback-done-right/

A common part used to create a high voltage is a CRT flyback transformer, having been a ubiquitous junk pile component. So many attempts to use them rely on brute …read more (https://hackaday.com/2024/11/24/flyback-done-right/)

Double Your Analog Oscilloscope Fun with this Retro Beam Splitter
https://hackaday.com/2024/11/24/double-your-analog-oscilloscope-fun-with-this-retro-beam-splitter/