With this heart rate sensor and pulse oximeter you can easily read information from a person such as heart rate (in graph), heart rate (in BPM), SPO2 and body temperature via a finger. A library of this module can be downloaded via the library manager in the Arduino IDE.
For reliable measurements, keep the finger on the sensor with constant pressure (ideally an elastic band is used).
Supply voltage: 3.3-5V DC
Signal voltage: 3.3-5V
Heart rate (both on a graph and in BPM)
Body temperature (not very accurate)
Analog IR LED reflection
Dimensions: See images
For more information, see the datasheet under the tab “Downloads”.
VIN: 1.8 – 5V DC supply voltage
SDA: I2C data pin
SCL: I2C clock pin
GND: Min/ground of supply voltage
RD: Red LED ground terminal
IRD: IR LED ground terminal
INT: Interrupt pin