MAX30105 High-Sensitivity Optical Sensor Module

Overview 

The MAX30105 is a sophisticated optical sensing module that combines three LEDs (red, green, and infrared) alongside a photodetector, optical elements, and low-noise electronic circuitry with ambient light cancellation. Originally designed for smoke detection (including particle and fire detection) and wearable health monitoring systems, it communicates easily with microcontrollers via an I²Cinterface.

Key Features 

• Triple-Wavelength Sensing: Utilizes Red, Green, and IR LEDs to detect various types of reflected light and particles.

• Ambient Light Cancellation (ALC): Built-in hardware filtering blocks interference from background sunlight and room illumination.

• Digital Interface: Easily connects with Arduino, ESP32, Raspberry Pi, and other popular development boards.

• Ultra-Low Power Operation: Designed for battery-powered portable equipment and continuous remote monitoring nodes.

Technical Specifications 

Ideal Applications 🛠️

• Smoke & Fire Detectors: Early-stage optical detection of smoke particles and air pollution.

• Air Quality Monitoring: Tracking fine particulate matter (PM2.5) and dust densities.

• Biometric Research: Optical heart rate, pulse oximetry (SpO2), and reflection-based physiological testing.