International Journal of Innovative Research in Computer and Communication Engineering

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TITLE Real-Time ECG Monitoring System Using ESP32 and AD8232 for Portable Healthcare Applications
ABSTRACT Cardiovascular diseases remain a leading cause of global mortality, underscoring the urgent need for accessible and continuous cardiac monitoring solutions. This paper presents the design and implementation of a low-cost, portable electrocardiogram (ECG) monitoring system built around the ESP32 microcontroller and the AD8232 single-lead heart rate monitor front-end IC. The proposed system acquires bio-electric signals through surface electrodes, performs real-time analog signal conditioning, digitizes the waveform via the ESP32's 12-bit ADC at 500 samples per second, and displays both the ECG waveform and instantaneous heart rate on a 16×2 I2C LCD module. An automated alert mechanism employing a buzzer and LED indicators notifies the user whenever the computed heart rate falls outside defined thresholds for bradycardia (<50 bpm) and tachycardia (>100 bpm). Experimental evaluation confirms visually recognizable P-QRS-T waveforms with a heart rate mean absolute error of 2.1 bpm relative to a calibrated pulse oximeter reference. The total hardware cost of approximately USD 12 makes the design substantially more affordable than commercial portable ECG monitors while remaining suitable for home healthcare, remote patient monitoring, and telemedicine applications. Future work incorporating LSTM-based arrhythmia classification and cloud integration via MQTT is discussed.
AUTHOR PROF. KUDKE SIR, TANVIR KHAN NASIR KHAN PATHAN, RUSHIKESH KISHOR ADHAO, RITESH SANTOSH BANGALE, MAYUR ANIL CHAVAN, SHEIKH ARIF SHEIKH JAFAR Assistant Professor, Dept. of Electronics & Telecommunication Anuradha College of Engineering & Technology, Chikhli, India Dept. of Electronics & Telecommunication Anuradha College of Engineering & Technology, Chikhli, India
VOLUME 183
DOI DOI: 10.15680/IJIRCCE.2026.1404024
PDF pdf/24_Real-Time ECG Monitoring System Using ESP32 and AD8232 for Portable Healthcare Applications.pdf
KEYWORDS
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