Heartbeat Sensor Module KY-039 by Finger

Heartbeat Sensor Module KY-039 by Finger

Operating Voltage: 3.3V to 5V DC
Operating Temperature Range: -40°C to 85°C
Dimensions: Approximately 19mm x 15mm
Output Type: Analog voltage signal
Interface: 3-pin header (VCC, GND, Signal)
Pin Configuration
VCC: Connect to 3.3V or 5V power supply
GND: Connect to ground
Signal (S): Analog output to be connected to an analog input pin on the microcontroller

Analog Output: Provides a continuous analog voltage corresponding to the heartbeat signal.
Infrared Sensing: Employs an IR LED and phototransistor to detect variations in light intensity caused by blood flow.
Compact Design: Small form factor (approximately 19mm x 15mm) suitable for wearable and portable applications.
Low Power Consumption: Operates efficiently within a voltage range of 3.3V to 5V.

Usage Tips :
Finger Placement: Ensure the finger is properly positioned between the IR LED and phototransistor for accurate readings.
Ambient Light: Minimize exposure to ambient light to reduce interference. Consider enclosing the sensor or using it in a controlled lighting environment.
Signal Processing: Implement filtering techniques in software to smooth out the analog signal and accurately detect heartbeats.