Imaginile produselor au caracter informativ si pot prezenta diferente minore, in functie de lot si de furnizor. Este posibil ca specificatiile si pretul produselor sa fie modificate fara preaviz. Facem tot posibilul sa adaugam in pagina produselor specificatii cat mai exacte si corecte dar este posibil ca acestea sa nu fie in totalitate corecte. in cazul in care identificati un astfel de caz, va rugam sa ne semnalati acest lucru.
Produsul este destinat specialistilor si nu include instructiuni de asamblare/utilizare. Produsul beneficiaza de garantia legala de conformitate (produsul este conform specificatiilor din site) egala cu durata de functionare medie a produsului de 14 zile de la data primirii produsului si de garantia Dead on Arrival (nefunctional la primire).
Finger Heartbeat Detection Sensor Module
Specificatii:
This project uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse.
Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, phototransistor used to obtain the flux emitted, when the blood pressure pulse by the finger when the resistance of the phototransistor will be slight changed.
We chose a very high resistance resistor R1, because most of the light through the finger is absorbed,it is desirable phototransistor sensitive enough.Resistance can be selected by experiment to get the best results.
The most important is to keep the shield stray light into the phototransistor. For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ fluctuate, so faint heartbeat will add considerable noise.
Module: Heartbeat Sensor
Compatible with Arduino
Size:1.9 x 1.5cm
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