MAX30100 Pulse Oximeter Heart-Rate Sensor Module
MAX30100 Pulse Oximeter and Heart-Rate Sensor Module is a compact biomedical sensing module designed for measuring heart rate and blood oxygen saturation (SpO2). It integrates LEDs, a photodetector, and advanced analog signal processing for accurate pulse monitoring. Operating with low power consumption, the module is ideal for wearable devices, fitness trackers, and medical monitoring systems. It supports I2C communication and can interface easily with Arduino, ESP8266, and other microcontrollers.
وحدة MAX30100 لقياس نبض القلب ونسبة الأكسجين بالدم هي وحدة استشعار حيوية مدمجة مخصصة لقياس معدل ضربات القلب وتشبع الأكسجين بالدم (SpO2). تحتوي على مصابيح LED ومستشعر ضوئي ومعالجة إشارات تناظرية متقدمة للحصول على قياسات دقيقة. تتميز باستهلاك منخفض للطاقة، مما يجعلها مناسبة للأجهزة القابلة للارتداء، أجهزة اللياقة، وأنظمة المراقبة الطبية. تدعم اتصال I2C ويمكن ربطها بسهولة مع Arduino وESP8266 والمتـحكمات الأخرى.
The MAX30100 Pulse Oximeter Heart-Rate Sensor Module is an integrated biomedical sensing solution designed for measuring pulse oximetry (SpO2) and heart-rate signals accurately and efficiently. The module combines dual LEDs, a photo detector, optimized optical components, and advanced low-noise analog signal processing into a compact package.
The sensor operates using both 1.8V and 3.3V power supplies and supports ultra-low-power operation, making it highly suitable for wearable and battery-powered devices. Its programmable sample rate and LED current settings help optimize performance and reduce power consumption.
The MAX30100 communicates using the I2C interface, allowing easy integration with popular development boards such as Arduino UNO, Nano, ESP8266, and other embedded platforms. The module also includes ambient light cancellation and high signal-to-noise ratio (SNR) features to improve measurement stability and reduce motion-related interference.
This sensor is commonly used in healthcare electronics, wearable fitness devices, heart-rate monitoring systems, and smart medical applications.
Specifications
- Sensor Type: Pulse Oximeter and Heart-Rate Sensor
- Model: MAX30100
- Operating Voltage: 1.8V / 3.3V
- Communication Interface: I2C
- Functions:
- Heart-rate monitoring
- Blood oxygen saturation measurement (SpO2)
- Integrated Components:
- LEDs
- Photo detector
- Analog front-end processing
- Package Size: 5.6 × 2.8 × 1.2 mm
- Shutdown Current: 0.7 μA (typical)
- Sample Rate: Programmable
- LED Current: Programmable
- Signal Processing: Ambient light cancellation
- Output Capability: Fast data output
- Compatibility: Arduino, ESP8266, STM32, Raspberry Pi, and other microcontrollers
Arduino Connection
| MAX30100 Module | Arduino UNO / Nano |
|---|---|
| VIN | 5V |
| GND | GND |
| SCL | A5 |
| SDA | A4 |
| INT | D2 |
Important Note
The MAX30100 IC internally operates at 1.8V logic levels. On some modules, the SCL and SDA lines are pulled up to 1.8V using onboard 4.7kΩ resistors, which may cause compatibility issues with microcontrollers using higher logic levels.
To improve compatibility:
- Remove the onboard pull-up resistors
- Use external 4.7kΩ pull-up resistors connected to the appropriate logic voltage
This modification helps ensure reliable I2C communication with boards such as Arduino UNO and similar devices.
Applications
- Wearable health monitoring devices
- Fitness tracking systems
- Pulse oximeters
- Heart-rate monitoring systems
- Medical monitoring equipment
- Smart healthcare devices
- Portable biomedical electronics
- IoT health monitoring projects
- Arduino and embedded system projects
- Remote patient monitoring systems