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SparkFun AD8232 Single Lead Heart Rate Monitor

SparkFun AD8232 Single Lead Heart Rate Monitor

MPN: 12650
SparkFun Electronics
AD8232 - Analog Front End (AFE) for ECG, EKG Interface Evaluation Board
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Overview

The SparkFun 12650 is a breakout board featuring the AD8232, an integrated signal conditioning block for ECG and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This board breaks out all nine pins from the AD8232 IC into a standard 0.1 inch header for easy prototyping.

Why Choose This Part

The board features a high-pass filter that eliminates motion artifacts and electrode half-cell potential, ensuring a clean output signal. It includes a dedicated right leg drive (RLD) amplifier to improve common-mode rejection and leads-off detection circuitry to notify the system when an electrode has become disconnected.

Applications

Fitness and Activity Monitors
Integrated into wearable devices to track heart rate during exercise and daily activity.
Portable ECG
Used in mobile health applications for remote patient monitoring and heart rhythm analysis.
Biofeedback Gaming
Providing physiological input to gaming peripherals for immersive or health-focused experiences.
Biometric Research
Prototyping sensor arrays for student projects or laboratory data collection.

Key Specifications

Type Cable Gland
Color Silver
Includes O-Ring
Material Brass, Nickel Plated
Thread Size M32x1.5
Thread Length 0.354" (9.00mm)
Ingress Protection IP68/IP69 - Dust Tight, Water Resistant, Waterproof; NEMA 1, 4, 6, 12
Operating Temperature -40degC ~ 100degC
Outside Cable Diameter (Max) 0.827" (21.00mm)
Outside Cable Diameter (Min) 0.433" (11.00mm)

Getting Started

Connect the board to an Arduino or other microcontroller using the analog output pin connected to an ADC. Use three electrodes (Right Arm, Left Arm, and Right Leg) and connect them via the 3.5mm jack or the header pins. Standard libraries for the AD8232 are available in the Arduino IDE to visualize the ECG waveform via the Serial Plotter.

Also Consider

AD8232 Analog Devices - The raw IC for engineers looking to integrate the AD8232 directly into a custom PCB design rather than using a breakout board.
MAX30102 Analog Devices/Maxim Integrated - A highly integrated pulse oximetry and heart-rate monitor module that uses I2C communication instead of analog output.