KY039 Finger Detection Heartbeat Measuring Sensor Module النكيه This is a bluetooth module

This is a bluetooth module for use with any microcontroller

or on the go

ATMEGA328P is most popular of all because of its features and cost

bus station and etc

and the two programmable buttons

KY039 Finger Detection Heartbeat Measuring Sensor Module النكيه This is a bluetooth moduleIntroduction: Finger Detection Heartbeat Measuring Sensor Module KY 039 uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse. This component is ideally suited to adding heartbeat sensing to your project. Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, photo transistor used to obtain the flux emitted, when