Update: This is the new version 2 and is in white. The 32 KHz clock oscillator chip is on the board itself, eliminating the need for an additional channel generated by the microcontroller.

MAX30003 is a single-lead ECG monitoring IC which has built-in R-R detection and several other features that make it perfect for a wearable single-lead ECG application.

Several new features on this chip make it ideal for wearable applications. First is the low power consumption - just 85 uW of power and can work from 1.1 V onwards ! Also of interest is the fact that it can work with only two chest electrodes without the need for a third right-leg drive (DRL) electrode.

The best feature of this chip though is the built-in R-R detection algorithm which can measure the time between successive peaks of the QRS complex of the ECG. This means that heart-computation comes right out of the box without any microcontroller-side code requirement. Heart-rate computation just got a lot easier !!

Note: This is a not a medical certified device nor is it intended to be used as one. While this product has the potential to work as a full-fledged patient monitor, careful calibration has to be performed and safety precautions need to be taken. We recommend usage only with a battery power source or an isolated source.

Download the latest Arduino code and GUI here

Features:

• MAX30003 IC on-board
• Single-lead ECG monitoring (only two electrodes !!)
• R-R peak detection for heart rate computation (using Pan-Tompkins Algorithm)
• High DC Offset range (excellent tolerance to motion artifacts)
• On-board level translator for 5V-tolerant operation
• On-board low-noise 3.3V voltage regulator

What's included:

• ProtoCentral MAX30003 Breakout board
• Straight pin headers
• 2-electrode ECG connector with stereo jack
• 10x disposable ECG stick-on electrodes

Documentation

• Schematic (PDF)
• Maxim MAX30003 Datasheet (PDF)
• Eagle Schematic and Layout, Arduino code, processing GUI code (Github)