Heart/Pulse sensor?

Hey guys I need a sensor that can read a person's pulse. Its for a fashion technology project I'm doing. I've already thought about using a microphone but is there another more accurate 'reader'? thanks! Also this component is going to be embedded in a bracelet around the wearer's wrist.



The general term is "heart rate monitoring" (HRM). There are "Heart Rate Chest Strap" produced by Polar, Garmin and many others, but they use different wireless transmissions. Some recent models use bluetooth, most Polar devices use 5,1 kHz (coded and uncoded) and Garmin uses 2,4 GHz.

You can find matching receivers here: - Polar Heart Rate Module - RMCM01 http://www.sparkfun.com/commerce/product_info.php?products_id=8660 - Polar Heart Rate Monitor Interface http://www.sparkfun.com/commerce/product_info.php?products_id=8661 - Garmin Transceiver nRF24AP1 with Trace Antenna http://www.sparkfun.com/commerce/product_info.php?products_id=8565 => here you can also find example code

I haven't used one of the receiver modules myself.


I played around with the Polar Heart Rate Module - RMCM01 interfaced to an Arduino. It was fairly easy to get working, but haven't (yet) done anything more than sending data to the Serial Monitor.

Hi mrbill! I have some problems with this module…
I’ve bought RMCM01 and the band (for heart rate), for an university exam. My aim is to get an integer from the band and RMCM01 via Arduino (I’ve already setup a board with Arduino, RMCM01, etc)…
First i’m a noob of Arduino (i’ve bought it a couple of days ago), the only thing i did is loadin’ Standard Firmdata into Arduino and monitoring it via Max MSP (on Mac OsX).

Can you send me some code examples of your work with this module?

Thank you.

Hi MrBill, I am also using the RMCM01 to try to interface with the arduino processor to act as a HRM. I was just wondering if you could send some of the example code this way. Aslo, can the Arduino provide the external clock? Or should I mount the RMCM01 on a separate daughter-board with the oscillator?