DFRobot Gravity Heart Rate Sensor

The DFRobot Gravity Heart Rate Monitor Sensor is an optical pulse sensor designed for real-time heart rate measurement using PPG technology. It detects blood volume changes in microvascular tissue and outputs both analog and digital signals for flexible integration. Operating from 3.3–6V, it ensures stable performance with low current consumption below 10mA. The compact design with PH2.0 interface simplifies connection to Arduino and other microcontrollers. Ideal for wearable prototypes, health monitoring systems, and educational biomedical projects. Features - PPG Optical Heart Rate Detection Technology - Analog and Digital Signal Output - Operating Voltage 3.3–6V DC - Low Operating Current Below 10mA - Gravity PH2.0 Plug-and-Play Interface - Compact PCB Design 28 × 24 mm - Skin Contact Measurement Capability - Suitable for Finger, Wrist, or Earlobe - Compatible with Arduino and 3.3V/5V MCUs - Designed for Wearable Integration Specifications - Operating Voltage: 3.3–6V DC (5V recommended) - Output Signal Type: Analog (0–Vin), Digital (0/Vin) - Operating Current: <10mA - Detection Method: Photoplethysmography (PPG) - Interface Type: Gravity PH2.0 3-Pin - Signal Output Pins: VCC, GND, Signal - Board Dimensions: 28 × 24 mm - Mounting Holes: Dual fixing holes - Application Area: Finger, Wrist, Earlobe - Compatibility: Arduino, ESP32, STM32, 3.3V/5V MCUs Links - Product WIKI (Heart Rate Monitor Sensor) - Selection Guide Schematic Layout SON1303 Datasheet - SON3130 Datasheet Tutorials MY HEART RATE SENSOR DIY ENCLOSURE CLIP - (DFROBOT HEARTRATE SENSOR)