automatic
The Best 8 Automatic Cat Litter Boxes, Tested by Our Cats
Others We Tested Photograph: Kat Merck Els Pet Orbitie for $189: This is one of the least expensive lidded automatic litter boxes. It functions much like the more expensive models, with an internal 65-liter-capacity orb that rotates and catches clumps with a plastic grate, depositing them into a bag-lined box below. The opening is a…
Automatic Evening Light With Cut-Off Timer
Designing a circuit to switch on a light at dusk and off at dawn is straightforward, and many such designs have been featured in EFY. However, lights controlled this way remain on all night, resulting in wasted electricity and reduced lamp lifespan. In most homes and business premises, outdoor lights are turned on at dusk…
Making airfield assessments automatic, remote, and safe
In 2022, Randall Pietersen, a civil engineer in the U.S. Air Force, set out on a training mission to assess damage at an airfield runway, practicing “base recovery” protocol after a simulated attack. For hours, his team walked over the area in chemical protection gear, radioing in geocoordinates as they documented damage and looked for…