Results tagged #Heartbeat Monitor in Circuits
Heartbeat Monitor Circuit with LED and Photocell
the finger, inside a light screen, between an high intensity led emitter and a photocell, provides the heartbeat signal, which, suitably amp...
Heartbeat monitor
? simple heart-beat transducer can be made from an infrared LED and an infrared phototransistor. ?t works because skin acts as a ref1ecti?e ...