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