The interesting part of this is the fact that you can get an ECG with an
instrumentation amp. Just detect peaks to calculate HR.
I have the schematics at home, e-mail private if you want to see.

+--------------------------+-----------------------+
|                          | ABL Canada inc.       |
| Jacques Audette          | 8550 Cote-de-Liesse   |
| Hardware design          | St-Laurent, Qc        |
| Video Codecs             | H4T 1H2               |
|                          | Tel: (514)344-5432    |
| jacques.audette@abl.ca   | Fax: (514)344-5439    |
+--------------------------+-----------------------+

> ----------
> From:         Rock Thompson[SMTP:rock_t@YAHOO.COM]
> Reply To:     pic microcontroller discussion list
> Sent:         Monday, March 30, 1998 10:10 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      More Heart Monitors
>
> Recent discussion here and on several newsgroups has discussed the
> type of heart rate monitor that uses a light directed through a finger
> or earlobe.  But the majority of current commercial exercise heart
> rate monitors use a strap that goes across the users chest.  You
> dampen the two pads on the strap and it picks up your heart rate,
> transmitting it to a display. Anyone have some thoughts on how to
> build one of these?
>
> Rock T
>
>
>
>
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