[time-nuts] Off topic project sort of heart rate monitor NEED BEATS PRE MINUTE TO ANALOG VOLTAGE

Hal Murray hmurray at megapathdsl.net
Tue Feb 19 20:38:42 EST 2013

paulc at snet.net said:
> The actual electrodes instrumentation amp is pretty much working fine  so no
> worries there. 

> My first tthought was a frequency to voltage IC like the LM2907 or the 2917
> but I get the impresiion from the data sheets that these chips will not work
> at these very low 1 Hz applications, 

If you have clean pulses, connect them up to the PPS input on a PC serial 
port.  The rest is software.

These are my opinions.  I hate spam.

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