The document describes a student project to monitor electrocardiogram (ECG or EKG) signals using an Arduino board connected to an AD8232 ECG sensor. The project aims to help diagnose heart conditions by analyzing the ECG signal. The AD8232 sensor extracts and amplifies weak ECG signals, which are then sent via Bluetooth to an Android app or Processing IDE for display and analysis. Components include an Arduino UNO, AD8232 sensor, breadboard, cables, Bluetooth module, and OLED display. Working code uploads the ECG data values in real-time for monitoring heart rate and rhythm.

1. PAAVAI COLLEGE OF ENGINEERING
NAMAKKAL-637018
BATCH MEMBERS :
BALAJI P (622020121004)
SURYA NIVASH T (622020121050)
GIRINATH N (622020121009)
DEPARTMENT OF BIOMEDICAL ENGINEERING
ECG MONITORING USING ARDUINO AND
AD8232 SENSOR
GUIDED BY:
Mr.V.SUNDHARARAJ M.E.,(Ph.D).,
(ASST.PROFESSOR)

2. ABSTRACT
 Heart diseases are becoming a big issue for the last few
decades and many people die because of certain health problems.
 Therefore, heart disease cannot be taken lightly.
 By analyzing or monitoring the ECG signal at the initial stage
this disease can be prevented.
So, we present this project, i.e ECG Monitoring with AD8232
ECG Sensor & Arduino with ECG Graph.

3. OBJECTIVE
 The AD8232 is a neat little chip used to measure the electrical
activity of the heart.
 This electrical activity can be charted as an ECG or
Electrocardiogram.
 Electrocardiography is used to help diagnose various heart
conditions.
 So in this project, we will interface AD8232 ECG Sensor with
Arduino and observe the ECG signal on a serial plotter or
Processing IDE.

4. AD8232 ECG SENSOR
 This sensor is a cost-effective board used to measure the
electrical activity of the heart.
 This electrical activity can be charted as an ECG or
Electrocardiogram and output as an analog reading.
 ECGs can be extremely noisy, the AD8232 Single Lead Heart
Rate Monitor acts as an op-amp to help obtain a clear signal
from the PR and QT Intervals easily.

5. Cont…
 The AD8232 is 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.

6. HC-05 BLUETOOTH TO SERIAL PORT
MODULE:
• HC-05 is a serial port protocol (SPP) designed for wireless
serial connection setup. It was chosen for it its ability to
simplify the circuit design Send measured data to android
application and due to its compatibility with the Nano
Arduino. In addition, it was chosen over HC-06 module
because it has the ability to operate as both as master and slave
modules rather than just a slave in the case of HC-06.

7. 0.96 12C OLED DISPLAY
• The 0.96″ OLED Display Module produces blue text on black
background with very good contrast when supplied with DC
2.8V supply. The OLED Display Modules also offers a very
wide viewing angle of about greater than 160°.

8. BLOCK DIAGRAM

9. AD8232 ECG Sensor Placement on
Body

10. WORKING
 An ECG is a paper or digital recording of the electrical
signals in the heart. It is also called an electrocardiogram or an
EKG.
 The ECG is used to determine heart rate, heart rhythm, and
other information regarding the heart’s condition.
 ECGs are used to help diagnose heart arrythmias, heart attacks,
pacemaker , and heart failure.

11.  ECG can be analyzed by studying components of the
waveform.
 These waveform components indicate cardiac electrical
activity.
 The first upward of the ECG tracing is the P wave. It indicates
atrial contraction.
 The QRS complex begins with Q, a small downward
deflection, followed by a larger upwards deflection, a peak
(R); and then a downwards S wave. This QRS complex
indicates ventricular depolarization and contraction.

12.  Finally, the T wave, which is normally a smaller upwards
waveform, representing ventricular re-polarization.

13. ADVANTAGES
 ECG helps to prevent heart attacks by analyzing heart
parametets at the initial stage.
 ECG is used to detect the cardiac conditions of the patients
after surgical or any other operation and after application of
anesthesia.
 ECG test is quick, painless and safe.
 ECG test is cheap in cost.

14. LIMITATIONS
 It does not provide underlying heart problems for patients not
having any symptoms.
 It does not always provide help in accurate diagnosis.
 More tests are needed to trace serious heart problems
undetected by normal ECG curve.

15. APPLICATIONS
 Fitness and activity heart rate monitors.
 Portable ECG Remote health monitors.
 Gaming peripherals.
 Biopotential signal acquisition.

16. COMPONENTS
COMPONENTS QTY PRICE
Arduino UNO
Board
1 850
AD8232 ECG
Sensor
1 650
Bread board 3 100
Connecting Cable 1 90
Connecting Wires 2m 160
Bluetooth module 1 400
0.96 12C OLED
Display
1 300

17. CONCLUSION
 Once the code is uploaded, you can see the value on serial
monitor and also on the serial plotter.
 But if you want a separate graph and want to plot it on
Processing IDE, you can use the code below and play.

18. RESULT ANALYSIS

19. Questions
?