[Fearless Night]’s slick dual hourglass doesn’t just simulate sand with LEDs, it also emulates the effects of gravity on those simulated particles and offers a few different mode options. The …read more (https://hackaday.com/2021/10/08/led-matrix-hourglass-knows-which-way-is-up/)

Power Your Home With a Water Battery
https://hackaday.com/2021/10/08/power-your-home-with-a-water-battery/

I’ve stated it before on Hackaday but one of the most interesting engineering challenges posed to me this year was “how could you store enough energy to power a decent …read more (https://hackaday.com/2021/10/08/power-your-home-with-a-water-battery/)

This Week in Security: Apache Nightmare, REvil Arrests? And the Ultimate RickRoll
https://hackaday.com/2021/10/08/this-week-in-security-apache-nightmare-revil-arrests-and-the-ultimate-rickroll/

The Apache HTTP Server version 2.4.49 has a blistering vulnerability, and it’s already being leveraged in attacks. CVE-2021-41773 is a simple path traversal flaw, where the %2e encoding is used …read more (https://hackaday.com/2021/10/08/this-week-in-security-apache-nightmare-revil-arrests-and-the-ultimate-rickroll/)

Hacked Set of Instruments Saves Musician’s Gigs
https://hackaday.com/2021/10/08/hacked-set-of-instruments-saves-musicians-gigs/

Most of the horror stories you hear about air travel seem to center around luggage. Airlines do an admirable job of getting people safely to their destinations, but checked baggage …read more (https://hackaday.com/2021/10/08/hacked-set-of-instruments-saves-musicians-gigs/)

Hackaday Podcast 139: Furter Burner, Glowing Potato Peeler, Hacked Smartwatch, and The Last Atlas
https://hackaday.com/2021/10/08/hackaday-podcast-139-furter-burner-glowing-potato-peeler-hacked-smartwatch-and-the-last-atlas/

Hackaday editors Tom Nardi and Elliot Williams bring you up to speed on the most interesting stories of the week. Hackaday’s Remoticon and Germany’s Chaos Communication Congress are virtual again …read more (https://hackaday.com/2021/10/08/hackaday-podcast-139-furter-burner-glowing-potato-peeler-hacked-smartwatch-and-the-last-atlas/)

Can We Repurpose Old Wind Turbine Blades?
https://hackaday.com/2021/10/08/can-we-repurpose-old-wind-turbine-blades/

Wind turbines are a fantastic, cheap, renewable source of energy. However, nothing lasts forever, and over time, the blades of wind turbines fatigue and must be replaced. This then raises …read more (https://hackaday.com/2021/10/08/can-we-repurpose-old-wind-turbine-blades/)

Homebrew Circuit Explores the Mysteries of Analog-to-Digital Conversion
https://hackaday.com/2021/10/08/homebrew-circuit-explores-the-mysteries-of-analog-to-digital-conversion/

When it comes to getting signals from an analog world into our computers, most of us don’t give much thought to how the hardware that does the job works. But …read more (https://hackaday.com/2021/10/08/homebrew-circuit-explores-the-mysteries-of-analog-to-digital-conversion/)