Description

The MAX30102 module is a highly efficient and compact biosensor designed for pulse oximeter and heart rate monitoring applications. Integrated with red and infrared LEDs, photodetector, and low-noise electronics, it offers accurate readings of both heart rate and blood oxygen saturation (SpO2). The sensor works by using light reflection, where changes in blood volume caused by arterial pulsation alter the light transmittance, which is then converted into an electrical signal for processing. The module is compatible with Arduino, STM32, and other microcontrollers via the I2C interface, enabling easy integration into wearable health monitoring systems. With ambient light suppression and low-power consumption, it’s ideal for battery-powered projects.

Why Choose the MAX30102 Heart Rate Sensor?

This small and powerful module provides an efficient solution for monitoring vital health metrics, such as heart rate and blood oxygen concentration, in real-time. Its high performance, low power consumption, and reliable I2C interface make it perfect for integration into portable and wearable devices. With its advanced light dissipation method and glass cover to reduce external light interference, the MAX30102 offers precision and consistency, even in challenging environments.

Key Features

Sensor: MAX30102 (Pulse Oximeter and Heart Rate Monitor)
LED Peak Wavelengths: 660nm (Red), 880nm (IR)
Supply Voltage: 3.3V – 5.0V
Detection Signal Type: Light Reflection Signal (PPG)
Communication Interface: I2C (Supports 1.8V to 5V)
Power Consumption: Ultra-low standby current with software-controlled shutdown
Working Principle: Measures changes in light transmittance through human tissue to determine pulse and blood oxygen saturation
Pin Description:
VIN → Main power supply input (1.8V to 5V)
SCL → I2C Clock
SDA → I2C Data
INT → Interrupt pin
RD → Red LED ground (Not connected)
IRD → IR LED ground (Not connected)
GND → Ground

Technical Specifications

Module: MAX30102 Heart Rate Sensor
LED Supply Voltage: 3.3V – 5.0V
Detection Signal: Light Reflection (PPG)
Output Signal Interface: I2C
Supply Voltage for Communication: 1.8V – 5V (Optional)
Board Dimensions: ~15.7mm x 20.8mm x 2.9mm
Assembly Hole Size: 0.5mm x 8.5mm
Operating Temperature Range: -40°C to +85°C

The MAX30102 module is perfect for creating accurate, low-power health monitoring systems. With its compact design and easy integration via I2C, it’s ideal for a wide range of wearable and portable projects. Its high sensitivity, low-noise analog circuitry, and advanced features like ambient light cancellation ensure consistent, reliable performance in diverse conditions.