Can You Help Me Find a Heart Beat Detector Circuit with LED Display?

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A user is seeking recommendations for a heart beat detector circuit that includes an LED display to visually represent heart activity. Benzun suggests a circuit that utilizes a soundcard as an analog-to-digital converter, which aligns closely with the user's requirements. The proposed solution addresses the need for isolation since the circuit won't be connected to a computer. A link to a relevant resource is provided for further exploration. This discussion focuses on finding effective circuit designs for heart rate detection with visual output.
benzun_1999
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can anyone sugest me a good heart beat detector circuit. note the circuit must detect the current from the heart and LED display in a column.

-Benzun
 
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I'd found this in a search to use the soundcard as an A/D and is pretty close to being right in the ballpark of your question. And since you're not connecting to a computer the isolation isn't a major issue.

http://www.eng.utah.edu/~jnguyen/ecg/ecg_index.html
 

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