The board is built to be mobile, capable of being powered by a LiPo battery with a JST connector or USB-C. Power consumption is super low at only 75mA when active and a minuscule 1.5 μA during sleep ...

Heart rate monitoring has been a mainstay of health and fitness, and while the stethoscope has given way to more precise electronic measuring devices, they've always involved wires and straps, or, in ...