On Wed, 22 Nov 2000, John Perkinton wrote: > Has anyone out there ever seen a heart rate monitor circuit. I am about t= o > built a circuit that will read someones heart rate using something into a > 16f84 pic chip, then transfer it via rs232 to a pc. Does anyone have a cl= ue > as to how to monitor a heart rate? If you wan=B4t "real" heart rate monitoring you will have to measure the hearts electrical signals the same way as ECG equipment do. Some of the heart rate monitors on the market works this way. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.