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 I^2C interface.
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
Feature
Specification
Sensor Type
Optical Particle & Bio-Sensor
LED Wavelengths
Red, Green, Infrared (IR)
Communication Interface
I^2C Bus
Operating Voltage
3.3V (Typical logic and supply)
Package / Module
Breakout Board with Header Pins
Ideal Applications 🛠️
Smoke & Fire Detectors: Early-stage optical detection of smoke particles and air pollution.
Air Quality Monitoring: Tracking fine particulate matter (PM_2.5) and dust densities.
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