I need a circuit that will read a person's heart rate by gripping two electrodes.
I have an "older" treadmill and find the clip-on ear heart rate monitor too unreliable. The newer treadmills use hand grips to measure pulse rate.
The circuit should use readily available components such as a digital voltmeter as a readout device. Also, the cost should be low (there are commercial devices costing over a $100).
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