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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 Video Demonstration
SoundCardECG Demonstration

The screenshot shows 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

A click-to-run EXE is available: SoundCardECG.zip (version 1.5)

Hardware Notes

Notes Image
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.
Lead Placement: The AD8232 works best if leads are placed in one of these configurations
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.

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Plot ECG signals acquired with a sound card

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