Thank you in advance for taking the time to let us know about your Ideas. We truly value your input and discuss each Suggestion as a team. It would be most helpful if you could include a use case for your Idea (how it will solve a problem, or add to the usefulness of Cayenne as a proto-typing solution). Thanks!
i have already find this sensor for arduino measuring the heart rate
RB-Lin-136 RB-Spa-773 but not wireless…
Dear, try to read this article:
http://www.0lab.it/tutorial-arduino-biofeedback/
and this Instructables: