SparkFun Polar Heart Rate Monitor Interface

This is a wonderful evaluation board developed collaboratively by Dan Julio Designs and SparkFun. The Heart Rate Monitor Interface (HRMI) is an intelligent peripheral device that converts the ECG signal from Polar heart rate monitors (HRM) into easy-to-handle heart rate data. It implements a sophisticated algorithm to calculate an average heart rate, even with noisy or intermittent data from the transmitter.

Note: This product is a collaboration with Dan Julio. A portion of each sale goes back to them for product support and will aid in ongoing development.

Features:

* Multiple interfaces: USB, serial, and I2C
* Algorithms for processing two heart rates: averaged and raw
* Uses the RMCM01 Polar OEM receiver
* Compatible with coded and uncoded Polar transmitters, including T31, T31C, T61C, and Wearlink
* 32-fold heart rate data history buffer
* Four 8-bit ADC inputs
* Up to a 5-channel digital I/O power connector
* Simple command/response interface
* Programmable startup process
* Works only with one transmitter (HRM) in range

Applications:

* Individual training devices
* Wearable heart rate monitoring devices
* Biofeedback devices
* Heartbeat-aware electronics worn on the body.