You can measure your blood oxygen level and pulse rate using a fingertip pulse oximeter -- and now with this project you can log that data wirelessly onto an SD card! Bring the comma-separated log file into your graphing software or quantified self apps for total control of your data!

Using a Feather nRF52840 Express with the Adalogger FeatherWing for real-time clock and SD card read/write capabilities. Code it all in CircuitPython and you'll be automatically logging data each time you use the pulse oximeter.

Parts

Angled shot of a Adafruit Feather nRF52840 Express.
The Adafruit Feather nRF52840 Express is the new Feather family member with Bluetooth Low Energy and native USB support featuring the nRF52840!  It's...
Out of Stock
Adalogger FeatherWing with Real time clock and SD card slot.
A Feather board without ambition is a Feather board without FeatherWings! This is the Adalogger FeatherWing: it adds both a battery-backed Real Time Clock and micro SD...
$8.95
In Stock
Micro SD card
Add speedy mega-storage in a jiffy using this 16 GB Class 10 micro-SD card. It comes with a SD adapter so you can use it with any of our shields or adapters! Preformatted to FAT so it...
$19.95
In Stock
Angled shot of CR1220 12mm Diameter - 3V Lithium Coin Cell Battery - CR1220.
These are the highest quality & capacity batteries, the same as shipped with the iCufflinks, iNecklace, Datalogging and GPS Shields, GPS HAT, etc. One battery per order...
$0.95
In Stock
Grey and white pulse oximeter with OLED readout screen on top
This Finger Pulse Oximeter with Bluetooth LE is great for monitoring your blood oxygen levels and pulse rate. Simply slide your index finger pad...
Out of Stock
Double prototyping feather wing PCB with socket headers installed
This is the FeatherWing Doubler - a prototyping add-on and more for all Feather boards. This is similar to our
$7.50
In Stock
USB Cable with Type A and Micro B ends
This is your standard USB A-Plug to Micro-USB cable. It's 2 meters long so you'll have plenty of cord to work with for those longer extensions.
$4.95
In Stock
Slim Lithium Ion Polymer Battery 3.7v 400mAh with JST 2-PH connector and short cable
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This...
Out of Stock

This guide was first published on Apr 28, 2020. It was last updated on Apr 28, 2020.

This page (Overview) was last updated on Aug 01, 2022.

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