The Heart Rate Pulse Sensor Module is an optical biosensor designed to measure heart rate by detecting blood flow changes in the fingertip or earlobe. Using the photoplethysmography (PPG) principle, it provides real-time pulse data that can be easily interfaced with microcontrollers, making it suitable for health monitoring, fitness tracking, and educational biomedical projects.
Core Sensor Specifications
• Sensor Type: Optical pulse sensor
• Measurement Method: Photoplethysmography (PPG)
• Output Type: Analog signal
• Measurement Parameter: Heart rate (BPM)
Electrical & Interface
• Operating Voltage: 3.3 V – 5 V
• Output Signal: Analog
• Interface Pins: VCC, GND, SIGNAL
• Logic Compatibility: 3.3 V / 5 V ADC compatible
• Onboard Components: LED and photodetector
Performance Characteristics
• Heart Rate Detection Range: ~30 – 240 BPM
• Response Time: Real-time pulse waveform output
• Accuracy: Depends on placement and signal filtering
• Best Performance: With stable finger contact
Physical Characteristics
• Sensor Form: Round optical sensor pad
• Cable Type: Lightweight flexible wires
• Compact and wearable-friendly design
Compatibility
• Arduino Uno / Nano / Mega
• ESP8266 / ESP32
• STM32, AVR, PIC microcontrollers
• Raspberry Pi (with external ADC if required)
Key Advantages
• Simple analog interface for easy integration
• Real-time pulse waveform output
• Low power consumption
• Suitable for wearable and portable projects
Technical Insights
• Requires signal filtering and averaging in software
• Ambient light can affect readings if not properly shielded
• Not intended for medical-grade diagnosis
• Proper placement improves signal quality
Applications
• Heart rate monitoring devices
• Fitness and activity trackers
• Educational biomedical experiments
• DIY health monitoring systems
• Wearable electronics
Pro Tip
• Use gentle and steady finger pressure on the sensor
• Implement moving average or peak detection algorithms
• Shield the sensor from strong ambient light for stable readings
Package Includes
• 1 × Heart Rate Pulse Sensor Module