ALLNET 4duino Pulse and Heart Rate Sensor (ALL-KS_Heartbeat)

The ALLNET 4duino Pulse and Heart Rate Sensor (ALL-KS_Heartbeat) is an optical pulse sensor module designed for DIY electronics projects. It uses photoplethysmography (PPG) to detect heart rate through fingertip or skin contact, outputting an analog voltage signal proportional to pulse activity. Compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers, this sensor is ideal for educational kits, prototyping, and health monitoring experiments.

Advantages

Easy to integrate with standard 3-pin headers (VCC, GND, Signal) and operates on 3.3V to 5V DC. The built-in LED provides visual pulse indication, and mounting holes allow secure attachment. Low current consumption (<10 mA) makes it suitable for battery-powered projects.

Suitable for

• DIY heart rate monitors
• Educational STEM kits
• Microcontroller prototyping
• Biometric sensor experiments

Key specifications

• Sensor Type: Optical Pulse Sensor
• Detection Method: Photoplethysmography (PPG)
• Operating Voltage: 3.3V - 5V DC
• Output Signal: Analog Voltage
• Interface: 3-Pin (VCC, GND, Signal)
• Compatibility: Arduino, ESP32, Raspberry Pi, Microcontrollers
• Measurement Principle: Infrared Reflection
• LED Indicator: Yes, Pulse Activity LED
• Mounting Holes: Yes (2)
• Detection Area: Finger/Skin Contact
• Output Range: 0V to VCC (depending on pulse and supply)
• Current Consumption: <10 mA (typical)
• Module Type: Standalone Sensor Module
• Connector Type: Standard Pin Headers (2.54mm pitch)

Recommendations

For best results, ensure stable skin contact and avoid excessive movement. Use with an analog input pin on your microcontroller and apply appropriate signal processing to extract heart rate data.