KY-039 Finger Detection Heartbeat Measuring Sensor Module

KY-039 Finger Detection Heartbeat Measuring Sensor Module is a compact optical pulse sensor designed to detect and measure heartbeats through fingertip contact. Ideal for DIY health monitoring, wearable electronics, and biomedical projects, this module offers real-time pulse rate detection with straightforward functionality and integration.

Key Features:

• Optical Heartbeat Detection: Uses LED and phototransistor pair to sense blood flow changes through finger placement.
• Digital Pulse Output: Provides clean digital signals for processing with microcontrollers.
• No Power-Hungry Display: Compact design without onboard screen minimizes power consumption.
• Easy Integration: Compatible with Arduino, ESP, Raspberry Pi, and other common platforms.
• Low Cost: Affordable component for health-monitoring and educational electronics.

Technical Specifications:

• Operating Voltage: 3.3V to 5V DC
• Current Consumption: ~2 mA (LED active)
• Output Type: Digital pulse signal (HIGH/LOW toggling with heartbeat)
• Detection Method: Optical—infrared LED and phototransistor
• Response Time: Fast enough for real-time pulse detection

Mechanical Specifications:

• PCB Material: Standard FR4 with solder mask
• Indicator: Onboard red LED for signal activity feedback
• Pin Headers: 3-pin male header for easy connection

Dimensions:

• PCB Size: Approx. 31 mm × 11 mm
• Mounting Holes: Not included (compact breadboard-friendly design)

Pinout and Wiring:

• VCC: 3.3V to 5V power supply
• GND: Ground
• OUT: Digital pulse output, connect to microcontroller digital input
• Wiring Tip: Use LED lighting or resistor if using analog-to-digital conversion

Datasheet Reference:

• Search online for “KY-039 Pulse Sensor module datasheet” to find pin diagrams, waveform examples, and wiring information

Applications:

• Heartbeat Monitoring: Capture pulse rate on microcontroller platforms.
• Health Wearables: Integration into DIY fitness trackers or heart rate monitors.
• Biofeedback Projects: Classroom and hobbyist experimentation.
• Medical Prototyping: Preliminary testing of pulse detection systems.

Equivalent Models:

• Pulse Sensor (World’s Heart Rate Sensor): Popular heart-rate optical sensor with built-in filter and amplifier.
• KY-061 Rhythm Module: Similar form factor sensor with analog signal output.
• Heart Rate Module TEMT6000: Ambient light phototransistor alternative with straightforward response.

Package Includes:

• 1 × KY-039 Finger Detection Heartbeat Measuring Sensor Module