IoT-Based ECG (Heart Rate) Monitoring System Using ESP32

I developed an IoT-based ECG monitoring system that captures real-time heart electrical signals using the ESP32 microcontroller and the AD8232 ECG sensor module.

The system is designed for remote healthcare and smart medical applications, enabling reliable ECG signal acquisition suitable for analysis, visualization, or cloud integration.

Electrocardiograms (ECG/EKG) are widely used to detect arrhythmias, abnormal heart rhythms, and early cardiac conditions, making this project ideal for telemedicine and wearable health solutions.

✅ What I Built

✔ Real-time ECG signal acquisition

✔ ESP32-based embedded system

✔ Low-noise analog signal interfacing

✔ Scalable IoT-ready architecture

✔ Compact and power-efficient design

✅ Hardware & Technologies Used

• ESP32 DevKit V1

• AD8232 ECG Heart Monitor Sensor

• Analog signal processing (ADC)

• Embedded C / Arduino framework

• USB power & serial communication

✅ System Overview

The AD8232 sensor captures the heart’s electrical activity through ECG electrodes

The analog ECG signal is read using the ESP32’s ADC

The ESP32 processes the signal for visualization or transmission

The design supports future integration with IoT platforms (MQTT, Firebase, dashboards, mobile apps)

✅ Use Cases

• Remote patient monitoring

• Wearable medical devices

• Telemedicine systems

• Smart healthcare IoT solutions

• Biomedical signal research