MAX30102 Pulse Oximeter & Heart-Rate Sensor Module

The MAX30102 Pulse Oximeter & Heart-Rate Sensor Module is an advanced biometric sensing solution that measures blood oxygen saturation (SpO₂) and pulse rate using high-performance optical technology. With built-in red and infrared LEDs, a precision photodetector, and a low-noise signal processor, it provides medical-grade sensing accuracy for wearables, fitness monitors, and IoT health systems.

Designed for low-power, continuous operation, the MAX30102 is perfect for battery-powered devices such as smartwatches and portable patient monitoring equipment. Its compact size and I²C interface make it easy to integrate with popular development platforms like Arduino and Raspberry Pi.

🔹 Key Features

• Dual Measurement: Simultaneous SpO₂ (blood oxygen) and heart-rate monitoring.

• Integrated Optical Components: Red & IR LEDs with photodiode for high sensitivity.

• I²C Digital Interface: Simple 2-wire communication for microcontrollers and SBCs.

• Ultra-Low Power: Ideal for wearable and portable designs.

• On-chip Temperature Sensor: Helps compensate readings for higher accuracy.

• Configurable Sample Rates & LED Currents: Optimize for power or precision.

🔹 Technical Specifications

• Sensor IC: Maxim Integrated MAX30102

• Operating Voltage: 1.8 V core; 3.3 V–5 V supply compatible

• Interface: I²C (up to 400 kHz)

• LED Wavelengths: Red (~660 nm), IR (~880 nm)

• Sampling Rate: 50 – 1000 samples/sec (configurable)

• Current Consumption: <1 mA (typical in active mode)

• Operating Temperature: –40 °C to +85 °C

• Module Size: ~15 mm × 14 mm

🔹 Applications & Use Cases

• Wearable Electronics: Smartwatches, fitness trackers, and health bands.

• IoT Medical Devices: Remote patient monitoring and telemedicine equipment.

• Sports & Fitness: Real-time heart-rate and oxygen tracking for athletes.

• DIY & Education: Integrate with Arduino and Accessories or ESP32 for custom health monitoring projects.

• Research Labs: Biomedical signal acquisition and prototyping.

🔹 Advantages for Makers & Engineers

• Drop-in upgrade to MAX30100 with improved noise rejection and performance.

• Extensive open-source libraries for Arduino and Raspberry Pi.

• Low power consumption enables long battery life.

🔹 Safety & Precautions

• Intended for hobbyist and educational use only, not as a certified medical diagnostic tool.

• Minimize ambient light and motion for best readings.

• Handle gently to avoid damage to optical surfaces.

🔗 Helpful Internal Links

• Pair with Electronics Components for complete IoT builds.

• Explore Tools and Accessories for assembly and calibration.

• Find reliable Power Supply modules for stable operation.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The MAX30102 Pulse Oximeter & Heart-Rate Sensor Module offers accurate SpO₂ and pulse monitoring in a low-power, compact design—perfect for wearable electronics, fitness trackers, IoT health projects, and Arduino or Raspberry Pi prototypes.