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Nuts & Volts Magazine (February 2017)

Build Your Own ECG-EKG Unit

By Ron Hoffman    View In Digital Edition  

I find medical instruments like an ECG-EKG unit really fascinating. To be able to watch the electronic firing signals of a heart is mesmerizing and informative. For parts costing less than $50, I built a unit that plugs into my laptop computer’s microphone input jack and displays stunningly clear ECG waveforms.


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What’s in the zip?
Gerber files
Trace images
Front panel label