ProtoCentral AFE4490 Pulse Oximeter Breakout Board Kit
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ProtoCentral AFE4490 Pulse Oximeter Breakout Board Kit

Part Number: PC-MED-0405


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Measuring SpO2 aka Specific Oxygen levels in blood has never been so easy! With the new AFE4490 IC our shield does an amazing job of measuring heart rate as well as SpO2 values.

Pulse Oximetry is an indirect method of measuring the oxygen levels in the blood. The sensor measures the amount of red and IR light wavelengths absorbed by blood to calculate the oxygen levels in blood. The measurement is done by a probe that clips on to a finger and contains emitters as well as a light sensor.

For more information on how exactly Pulse Oximetry works, check this out, here.

Since the amount of blood flowing through any blood vessel varies (pulses) with the rate of blood from the heart, this can also be used for measuring heart rate without the need for connecting any ECG electrodes.

Important Note: This is only a prototyping board meant for the design and evaluation of SpO2 and is not meant to be used as a medical diagnostic device.

NEW: This is now compatible with the ProtoCentral OpenView unified data visualization software.


  • ProtoCentral AFE4490 Pulse Oximeter Breakout Board Kit
  • Set of stackable Arduino headers-1
  • “Nellcor compatible” Pulse oximetry finger probe-1


  • TI AFE4400 Single chip pulse pulsoximetry front-end IC
  • Standard Nellcor compatible DB9 connector for probe
  • Calculates Spo2 values with provided code
  • Real-time display of PPG (Photoplethysmogram)

Board Dimensions

  •  2.165 x  1.3386″(55 x 34mm)


Schematics, designs and software including Arduino libraries can be downloaded from Github:

License Information

This product is open source! Both, our hardware and software are open source and licensed under the following licenses:


All hardware is released under Creative Commons Share-alike 4.0 International. CC-BY-SA-4.0


All software is released under the MIT License(

Please check for detailed license descriptions.


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