I pulled out a heart rate sensor that was used with a sports watch. However connecting it to the Arduino is not as easy as plugging in the TMP36 into a breadboard. The sensor was used as a waist wrap and it send data to the watch using RF.
I took some pictures to show you how the sensor looks like. Maybe someone could help me to hook it up with my Arduino?
The sensor was connected to a 3V Lithium Cell CR2032 battery. The picture shows the ground connector but I don't know what the other parts of the sensor are, and what they do.
Thanks for any of your input!
pictures:
