The MAX30102 is an integrated pulse oximeter and heart rate monitor Sensor. It integrates a red LED and an infrared LED, photo electric detectors, optical devices and low-noise electronic circuits with ambient light suppression.
The MAX30102 features a 1.8V supply and a separate 5.0V for internal LED power supply for wearable devices for heart rate and blood oxygen collection detection.
Standard I2C compatible communication interface can transfer the collected values to the Arduino, KL25Z and other microcontrollers for heart rate and blood oxygen calculation.
The module can be shut down through software with zero standby current, allowing the power rails to remain powered at all times.
VIN: main power supply input, 1.8V~5V
3-bit pad: selects the pull-up level of the bus, depending on the pin master voltage, optional 1.8V or 3.3V end (this end contains 3.3V and above)
SCL: the clock connected to the I2C bus
SDA: data connected to the I2C bus
INT: interrupt pin of the MAX30102 chip
RD: RED LED ground terminal of MAX30102 chip, generally not connected
IRD: the IR LED ground of the MAX30102 chip is generally not connected
GND: ground wire