MAX30102 Pulse Oximeter Heart Rate Sensor Module

The MAX30102 Pulse Oximeter Heart Rate Sensor Module is a compact optical sensing solution for measuring pulse-related signals and developing heart-rate and SpO2 monitoring projects. It combines red and infrared LEDs, a photodetector, ambient-light rejection and low-noise signal-processing circuitry in a small sensor package.

The module communicates with a microcontroller through an I2C-compatible interface, making it suitable for Arduino, ESP32 and other embedded development projects when the required logic-level interfacing is provided.

The sensor uses changes in reflected red and infrared light to detect variations caused by pulsating blood flow. Its programmable LED current and sample settings help developers balance measurement performance and power consumption, while the FIFO data buffer supports efficient data collection. The integrated ambient-light cancellation and high signal-to-noise performance can help improve readings in practical wearable and fitness applications.

The MAX30102 is well suited for DIY electronics, wearable prototypes, fitness-monitoring projects, biometric experiments and educational embedded-system projects. It is a sensor component for development and prototyping, not a medical diagnostic device.

read our blog on eye blinking sensor, which provides information about the working principle of an eye blink sensing system.

Note: For this sensor, you have to pull up SCL & SDA Pin( You have to connect a 10Kohm resistor between SCL & 5V And Same as SDA to 5V)

Features:

• Integrated red and infrared optical sensing for pulse and SpO2-related projects

• I2C-compatible digital interface for easy microcontroller communication

• Integrated LEDs, photodetector and ambient-light cancellation

• Programmable LED current and sampling parameters for power-conscious designs

• High signal-to-noise performance for more robust optical measurements

• Compact sensor solution for wearable, fitness and embedded prototypes

• Compatible with popular Arduino and other microcontroller development workflows with suitable voltage-level interfacing

Applications:

• Fitness Assistant Devices
  

• Medical Monitoring Devices

• Wearable Devices

Arduino Nano-Based Pulse Oximeter with OLED Display Wiring Diagram:

Specifications

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

• Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
• Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
• Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.

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• Items you no longer need or changed your mind about
• Products received in damaged condition
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• Missing components inside the package

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• In their original, unused condition
• In the original packaging with all accessories, manuals, and free gifts (if any)
• Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

1. Contact us via email at support@robodium.com or call +91 8123109966
2. Provide your order number and reason for return
3. Submit photos/videos of the item (especially for damaged/defective products)
4. Our team will review and approve your return request within 1-2 business days

Return Pickup Process

We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.

• Once your return is approved, we will coordinate pickup from your location.
• Pack the product securely in its original packaging.
• Include a copy of the order confirmation or packing list.
• Keep the package ready - our logistics partner will collect it at the scheduled time.

Return Shipping Costs

• Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
• Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.

Refund Process

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• Processing Time: 5-7 business days after we receive and inspect the returned item.
• Refund Amount: Full purchase price minus any applicable return shipping fees.
• Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).

Replacements

• Once the returned item is inspected and approved, we ship the replacement at no additional cost.
• Replacement items are dispatched within 2 business days of receiving your return.
• If replacement is unavailable, we provide a full refund.

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.

Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

• Orders in Pending or Payment Verification status can be canceled for a full refund.
• Contact us immediately at support@robodium.com to cancel before shipping.
• Once an order is shipped, it cannot be canceled but can be returned after delivery.

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• Return Request Review: 1-2 business days
• Issue Resolution: Within 48 hours of verification