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All Journal Jurnal Teknik Elektro dan Komputer TRIAC
Luthfan Hadi Pramono
Computer Engineering Department, Faculty of Information Technology, Universitas Teknologi Digital Indonesia
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

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Design and Evaluation of an IoT-Enabled ESP32 Photoplethysmography Monitor for Heart Rate and SpO₂ Muhhammad Iyan Putra Pratama; Luthfan Hadi Pramono; Adi Kurniawan Saputro; Dian Neipa Purnamasari; Muttaqin Hardiwansyah
Jurnal Teknik Elektro dan Komputer TRIAC Vol 12, No 2 (2025): Oktober 2025
Publisher : Jurusan Teknik Elektro Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/triac.v12i2.31989

Abstract

Cardiovascular disease (CVD) motivates affordable, continuous monitoring of heart rate and peripheral oxygen saturation (SpO₂). We present a single-MCU device using an ESP32 and MAX30102 photoplethysmography sensor that acquires heart rate and SpO₂ and streams data to a ThingSpeak dashboard. Performance was evaluated over four consecutive days under normal conditions, with five paired measurements per day against a clinically approved fingertip oximeter. Using all paired observations, the proposed design achieved low errors with RMSE = 0.84 bpm for heart rate and 0.59 percentage points for SpO₂, the maximum absolute error did not exceed 1 bpm or 1 pp, respectively. These results demonstrate end-to-end operation and good agreement with reference in resting conditions.
Co-Authors Adi Kurniawan Saputro Dian Neipa Purnamasari Muhhammad Iyan Putra Pratama Muttaqin Hardiwansyah