Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	MAX30102 / KY-039 Compatible
Interface Type	I2C (Inter-Integrated Circuit)
Operating Voltage	3.3V - 5.0V DC
Wavelengths	Red (660nm) and Infrared (880nm)
FIFO Buffer	18-bit Data Storage
Sample Rate	Adjustable up to 3200Hz
LED Current	Programmable up to 50mA
Package Type	Breakout Board with Header Pins
Compatibility	Arduino, Raspberry Pi, ESP32, STM32
Primary Application	Wearable Heart Rate & SpO2 Monitoring

6 reviews

Anonymous

Mar 16, 2026

Rating: 3/5

Works but documentation could be better

The hardware itself seems fine, but I struggled a bit finding clear examples for the specific register settings. Once I found a good GitHub repo, it worked great.

Anonymous

Mar 15, 2026

Rating: 5/5

Excellent replacement part

Bought this to replace a faulty sensor in an old fitness tracker prototype. The pinout matches perfectly, and the signal quality is actually better than the original component.

Anonymous

Mar 08, 2026

Rating: 4/5

Great raw data output

If you are looking to analyze PPG signals, this gives you clean raw data. The FIFO buffer helps prevent data loss during high-speed sampling. Highly recommended for data logging projects.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect for DIY Wearables

This module works flawlessly with my Arduino project. The I2C communication is stable, and the library support is excellent. I was able to get heart rate readings within minutes of setup.

Anonymous

Mar 04, 2026

Rating: 4/5

Good value, needs calibration

The sensor is sensitive and picks up pulses well. However, you need to calibrate it properly for accurate SpO2 readings. Great for learning and prototyping, but don't rely on it for medical diagnosis.

Anonymous

Mar 04, 2026

Rating: 5/5

Compact and Efficient

Love how small this breakout board is. It fits perfectly into my custom wristband design. Power consumption is low, which is crucial for battery-operated projects.

5 FAQ

Q: What is the difference between MAX30100 and MAX30102 used here?

A: The MAX30102 offers improved performance over the MAX30100, including better motion artifact rejection, lower power consumption, and a more robust I2C interface.

Q: Is 5V logic safe for this module?

A: The module typically includes voltage regulation, but the I2C lines are 3.3V tolerant. If your microcontroller uses 5V logic, we recommend using a logic level converter to ensure safety.

Q: Does this module come with a library for Arduino?

A: Yes, there are several open-source libraries available on GitHub and the Arduino Library Manager that support the MAX30102 chip, making integration very easy.

Q: How do I clean the sensor surface if it gets dirty?

A: Gently wipe the LED and photodetector glass with a soft, lint-free cloth slightly dampened with isopropyl alcohol. Avoid scratching the surface as it affects light transmission.

Q: Can this measure blood oxygen accurately without a finger clip?

A: While the sensor can detect SpO2 levels from the wrist or finger, accuracy varies based on skin tone, movement, and fit. It is designed for educational and prototyping purposes, not clinical use.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

HC-SR501 Human Motion Infrared Sensor Module Compatible with Arduino micro:bit Eco-Friendly

$7.50

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range

$23.65

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

DHT22 Single-Bus Digital Temperature & Humidity Sensor AM2302 Module Electronic Building Blocks

$10.42

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39