SparkFun Photodetector (MAX30101) Hookup Guide

Contributors: santaimpersonator

Resources and Going Further

For more on the SparkFun Photodetector (MAX30101), check out the links below:

GitHub Hardware Repository -- Home base for the sensor's latest design files
SparkFun Photodetector (MAX30101) Schematic (PDF)
SparkFun Photodetector (MAX30101) Eagle Files (ZIP)
MAX30101 Datasheet (PDF)
SparkFun MAX3010x Arduino Library -- Source and example files for the Arduino library used in this tutorial.
Qwiic MAX3010x Python Package
- ReadtheDocs
SFE Product Showcase

Application Notes

Note: Particle detection, heart rate measurement, and photoplethysmography (for pulse oximetry) are applications of the MAX30101. These applications are detailed in the notes below; however, they require an understanding of the operating principles of the sensor and a conceptual knowledge of the application(s). Although, we provided the information below for interested users and may provide some examples of the application in our software; these applications are, unfortunately, not supported by SparkFun and the examples are primarily for demonstration purposes only.

Here are additional resources on how the MAX30101 functions for HR detection and pulse oximetry:

Basic Concept: The sensor relies on the reflection and scattering of the red and IR light that penetrates into the subcutaneous tissue.

For more information on particulate matter and their detection, check out these resources:

Basic Concept: The sensor relies on the reflection and scattering of the red and IR light from particles to detect their presence.

Maxim's Original Firmware for the MAX30102 adapted in our Arduino Library:

MAXREFDES117 firmware for Arduino platforms

For more sensor action, check out these other great SparkFun tutorials.

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