Yes, the heartbeat; from the heart. “We developed this sensor to collect physiological data, information including ECG, heart rate, respiration, and body temperature,” said Jenny Tseng ...
And because it’s also quite simple to implement the required sensors, it makes sense that electrocardiogram (ECG) machines are a popular choice among introductory medical electronics projects.
Apple introduced the ECG feature with the Watch Series 4 back in 2018 by embedding an electric heart sensor into the rotating Digital Crown and the sensing hub underneath that is in contact with the ...