Interface:
VIN: Main power input 1.8V-5V.
3-bit pad: I2C bus pull up level, you can choose 1.8V or 3.3V according to the pin master voltage.
SCL: I2C bus clock
SDA: Connected to the I2C bus data
INT: MAX30102 chip interrupt pin
RD: MAX30102 chip's RD LED grounding terminal, generally doesn't need to connect.
IRD: MAX30102 chip's IR LED grounding terminal, generally doesn't need to connect.
GND: grounding wire.
Specification:
LED peak wavelength: 660nm/880nm.
LED power supply voltage: 3.3~5V.
Detection Signal Type: Optical Reflection Signal (PPG).
Output Signal Interface: I2C Interface.
Communication Interface Voltage: 1.8 ~3.3V~ 5V
Package Including:
3pcs Heart-Rate Sensor Module, MAX30102 Blood Oxygen Sensor, Compatible with Arduino STM32