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Many different brands of colored sand products are being recalled in the wake of the discovery of asbestos.
" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/EC-Rainbow-Sand-1.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/EC-Rainbow-Sand-1.png?w=800">Asbestos is a nasty old mineral. It’s known for releasing fine, microscopic fibers that can lodge in the body’s tissues and cause deadly disease over a period of decades. Originally …read more (https://hackaday.com/2025/12/01/australias-new-asbestos-scare-in-schools/)
Playing the drums requires a lot of practice, but that practice can be incredibly loud. A nice workaround is presented by [PocketBoy], in converting an acoustic kit to electronic operation …read more (https://hackaday.com/2025/12/01/quiet-your-drums-with-an-electronic-setup/)
To those of us who live in the civilized lands where ~230 VAC mains is the norm and we can shove a cool 3.5 kW into an electric kettle without …read more (https://hackaday.com/2025/12/01/using-a-level-2-charger-to-work-around-slow-120-vac-kettles/)
[Aditya Sripada] and [Abhishek Warrier]’s TARS3D robot came from asking what it would take to make a robot with the capabilities of TARS, the robotic character from Interstellar. We couldn’t …read more (https://hackaday.com/2025/12/01/tars-like-robot-both-rolls-and-walks/)
A mosquito has a very finely tuned proboscis that is excellent at slipping through your skin to suck out the blood beneath. Researchers at McGill University recently figured that the …read more (https://hackaday.com/2025/12/01/necroprinting-isnt-as-bad-as-it-sounds/)
Although it might seem like there was a sudden step change from analog to digital sometime in the late 1900s, it was actually a slow, gradual change from things like …read more (https://hackaday.com/2025/12/01/converting-a-1980s-broadcast-camera-to-hdmi/)
Want to know if somebody is lying? It’s always so hard to tell. [dbmaking] has whipped up a fun little polygraph, otherwise known as a lie detector. It’s nowhere near …read more (https://hackaday.com/2025/12/02/little-lie-detector-is-probably-no-worse-than-the-big-ones/)