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Plot ECG signals acquired with a sound card
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README.md

Sound Card ECG

The Sound Card ECG program provides a simple interface to view and measure ECG signals obtained through the sound card (using a line-in or microphone jack).

Screenshot YouTube Demonstration
SoundCardECG Demonstration

This is my heartbeat rate as I comfortably used the computer, then took a few minutes to watch a scary video (which elevated my heartrate for a few minutes in the middle).

Download Binary (SoundCardECG.exe)

Click-to-run binaries are provided with each release:
https://github.com/swharden/SoundCardECG/releases

Hardware

AD8232 ECG Module

My preferred ECG device (and the one I used in the screenshot) is a AD8232 breakout board (SparkFun) feeding the signal directly into the microphone jack of my PC.

DIY ECG with 1 Op-Amp

Those interested in building an ECG circuit from scratch may find my DIY ECG with a Single Op-Amp (an LM-741) project interesting.

Lead Placement

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