Key result
Open-source ESP32-powered PPG platform matches established HRV benchmarks during offline validation.
Why the study?
There is a need for accessible, transparent, and hands-on platforms to support understanding of cardiovascular monitoring and physiological signal processing in research and education.
An open-source, ESP32-based PPG acquisition platform provides a low-cost, accessible tool for cardiovascular monitoring research and education.
Enables low-cost open-source HRV research; leaves open prospective clinical validation.
To support the understanding of cardiovascular monitoring and physiological signal processing, we present a portable, open-source photoplethysmography (PPG) acquisition platform developed for educational and research applications. The system is built entirely with commercial off-the-shelf components and centers around an ESP32 microcontroller, which performs high-speed analog signal acquisition at 500 samples per second, alongside real-time control, and wireless communication. A cross-platform, Python-based graphical user interface enables real-time signal visualization, peak detection, and the computation of heart rate variability (HRV) metrics, including RMSSD and SDNN, during offline analysis. All hardware and software resources are openly available to enable replication and further development. This project emphasizes accessibility, transparency, and hands-on learning in biomedical signal acquisition. System functionality is validated offline through controlled data collection from human subjects, demonstrating results consistent with established HRV benchmarks.
No takes yet. Share an insight, caveat, or question.
Miranda-Vega et al. (2025) studied this question. ESP32-Powered PPG Signal Acquisition platform was evaluated on System functionality validation against established HRV benchmarks. An open-source, ESP32-powered photoplethysmography acquisition platform was developed and validated offline, demonstrating results consistent with established heart rate variability benchmarks.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: