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| Researchers at the University of Washington have also been working on a method for wireless devices to communicate without using any battery power.
Daily update ⋅ April 18, 2018
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UW researchers 3D print innovative ‘smart’ device for ordering laundry detergent
It is this liquid flow that is used to provide power to the mechanism, so there is no need for batteries or anyelectronics equipment. … The device is capable of communicating this drop, and using it to make sure your laundry doesn’t go unwashed. … ”There’s been a lot of interest in 3D printing,” said Iyer.
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