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  4. Heart Rate Pulse Sensor Module – Analogue Optical Biometric Sensor
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Pricelist: Retail Price (B2C) Pricelist
Pricelist: Retail Price (B2C) Pricelist
Heart Rate Pulse Sensor Module – Analogue Optical Biometric Sensor

Heart Rate Pulse Sensor Module – Analogue Optical Biometric Sensor

ParameterDetailed Specification
Operating Voltage3.3V to 5V DC
Operating Current~4mA at 5V
Sensor TypeOptical (Green LED + Photodiode)
Output TypeAnalog Signal
Cable Type20cm Flat Ribbon Cable
ConnectorStandard 3-pin Header (VCC, GND, SIG)
Dimensions16mm Diameter
                                 Price

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₹ 152.54 ₹ 152.54
(Tax included)

Barcode: 378420

Product Description

Bring biometric data to your projects with the Heart Rate Pulse Sensor Module. This compact, plug-and-play sensor is designed for hobbyists and students to easily incorporate live heart-rate data into their electronics. At Robogears, we recommend this specific module because it combines an integrated optical sensor with advanced noise-cancellation circuitry. It works by shining a green LED through the skin and measuring the light reflected back by the blood flow (Photoplethysmogram). This analog module provides a clean, oscillating signal that can be instantly read by any microcontroller's ADC pin at your Pimpri facility.

Detailed Key Features

  • Plug-and-Play Convenience: Features a pre-soldered 3-pin cable, allowing you to connect it directly to an Arduino or sensor shield without any soldering required.

  • Integrated Noise Cancellation: On-board hardware filtering helps clean the analog signal, making it easier to identify individual heartbeats even during slight movement.

  • Compact Circular Design: Its small, 16mm footprint is perfect for mounting on fingertips, earlobes, or integrating into wearable fitness bands and headgear.

  • Wide Voltage Range: Operates reliably on both 3.3V (for ESP32/Raspberry Pi) and 5V (for Arduino Uno/Nano), offering maximum flexibility for different power systems.

  • Biometric Interactivity: Enables the creation of "bio-reactive" projects where lights, motors, or displays react in real-time to a user's pulse.

All Technical Details

  • Stability: Precision-engineered to minimize DC offset, keeping the heartbeat waveform centered for easier digital thresholding.

  • Ease of Use: No complex libraries required; a simple analogRead() command is enough to start seeing your pulse in the Serial Plotter.

  • Build Quality: Features a protective coating to safeguard the sensitive optical components from sweat and skin oils.

  • Versatility: Ideal for stress-monitoring devices, interactive art installations, and educational biomedical demonstrations.

Prototyping & Engineering Tips (Robogears Exclusive)

  • The "Goldilocks" Pressure: At your Pimpri workshop, remember that pressure is key. Pressing too hard will cut off blood flow and flatten the signal, while too little pressure won't pick up the pulse. Use a piece of Velcro tape or a rubber band to maintain a gentle, consistent contact.

  • Ambient Light Shielding: Fluorescent indoor lights can introduce 50Hz/60Hz noise. To get a studio-quality pulse wave, place a small piece of dark tape or a black cloth over the finger while testing.

  • Visualizing the Data: Use the Arduino Serial Plotter (Ctrl+Shift+L) to see the waveform. If the signal looks "jittery," implement a simple moving average filter in your code to smooth out the spikes.

  • Safety First: This sensor is for educational and creative use only. It is not a medical-grade device and should never be used for critical health monitoring or diagnostic purposes.

Package Includes

  • 1 x Heart Rate Pulse Sensor Module

  • 1 x 3-Pin Jumper Cable (Attached)

  • 1 x Velcro Finger Strap (Optional/Batch Dependent)

Image Disclaimer

Product images are shown for illustrative purposes only. The color of the PCB (typically black or purple) or the specific brand of the optical chip may vary slightly between batches, but the analog output and biometric performance remain as described.

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