MAX30102 Heart Rate Sensor Module

The MAX30102 is an integrated heart rate and pulse oximetry (SpO2) sensor module. It combines red and infrared LEDs, a photodetector, and low-noise analogue electronics in a single package, communicating over I²C. Ideal for wearable health monitors, fitness trackers, and biomedical prototyping.

The module accepts 3.3–5 V input and draws a maximum of 6 mA. A software-controlled shutdown mode reduces standby current to near zero, making it well-suited for battery-powered applications.

Key Features

• Heart Rate + SpO2 – Measures pulse and blood oxygen saturation via PPG
• Dual-Wavelength LEDs – 660 nm (red) and 880 nm (IR) for accurate readings
• 18-Bit ADC – High-resolution analogue-to-digital conversion
• Adjustable Sampling Rate – 50 Hz to 3200 Hz
• I²C Interface – Standard two-wire connection to any microcontroller
• Low Power – 6 mA max; software shutdown for near-zero standby
• Interrupt Pin – Hardware interrupt for real-time event notification

Specifications

• Sensor: Maxim MAX30102
• Input Voltage: 1.8–5 V DC
• Current Draw: 6 mA max
• ADC Resolution: 18-bit
• LED Wavelengths: 660 nm / 880 nm
• Sampling Rate: 50–3200 Hz
• Operating Temperature: −40 to +85 °C
• Interface: I²C

Pinout

• VIN – Power input (1.8–5 V DC)
• SCL / SDA – I²C clock and data
• INT – Interrupt output
• RD / IRD – Ground for red and IR LEDs
• GND – Common ground

Ideal For

• Wearable fitness and health monitors
• Biomedical and SpO2 prototyping
• Arduino and Raspberry Pi health-sensing projects

Package Contents

• 1× MAX30102 Heart Rate and Pulse Oximeter Sensor Module