ECG AD8232 User Manual

ASSEMBLY MANUAL
Contents
Contents .................................................................................................................................................. 1
Introduction ............................................................................................................................................ 1
Warnings and safety issues .................................................................................................................... 2
Hardware description and how to build it ............................................................................................ 3
Hardware specifications ....................................................................................................................... 10
Components ......................................................................................................................................... 11
Software Description ............................................................................................................................ 13
Introduction
Hardware
The ECG device can be built easily (in less than 1 hour) and only a very basic electronics skills
are needed.
The simple circuit design and layout are a good compromise for having both a low cost and
good performance. It is based on few boards to be connected together:
• ECG module AD8232 (Module Single-Lead, Heart Rate Monitor Front End)
• Arduino Nano board
• HC-05 (or HC-06) Bluetooth module
Few connections are needed (connector cables and/or soldering)
Software
No software programming knowledge is required since all you need is to install the App by
opening the apk file from an Android smartphone and to upload the provided Arduino sketch
on the Arduino board (this can be done easily by using the Arduino Software IDE and one of
the many tutorials available on the web).

ECG AD8232 Specifications

General

Supply Current	170µA
Common-Mode Rejection Ratio	80dB
Operating Temperature Range	-40°C to +85°C
Type	Instrumentation Amplifier
Chip	AD8232
Output	Rail-to-Rail
Input Impedance	10GΩ
Gain	100
Bandwidth	0.5Hz to 40Hz
Input Bias Current	1 pA
Quiescent Current	170µA
Package	LFCSP

Summary

Introduction

Hardware Overview

Overview of the ECG device's hardware components and their connections.

Software Overview

Overview of the software setup required for the ECG device.

Warnings and Safety Issues

Hardware Description and Assembly

Additional RLD Resistor for Safety

Details on adding an RLD resistor for enhanced safety and current limiting.

Custom Electrodes Cable

Guide to creating custom electrodes cables for the device.

Solder-Free GND Connection

Method for connecting GND without soldering using connector cables.

Switch and Device Box Integration

Instructions for integrating a switch and housing the device in a box.

Hardware Specifications

Components List

Software Description and Setup

Arduino Programming

Steps for uploading Arduino sketch files to the board using the IDE.

ECG SmartApp Installation

Guide to installing the ECG SmartApp on a smartphone and pairing.