Design and Development of a Wearable Biofeedback System for Real-Time Stress Management using ESP32 and MAX30102

In today’s world, high pressure settings of academics as well as industry, stress has undergone a transformation from being a visible health concern to an unknown one. This paper presented the design, development, and validation of the “Stress Relief Band”, a low-cost device that can be worn by the user to relieve stress and induce focus through physiological monitoring. Grounded in an extensive evaluation 15 different research studies, the system consists of MAX30102 Pulse Oximetry Sensor as well as ESP32 Microcontroller to measure Heart Rate Vari- ability (HRV) as well as finding signs of sympathetic overwhelming of the nervous system. Upon the detection of stress, the device automatically causes a Linear Resonant to occur Actuator (LRA) provide rhythmical haptic vibrations; directing the user in a pattern of deep breathing. This project offers to close the gap between the diagnostic monitoring and the therapeutic intervention, offering a discreet and not pharmacological solution for immediate stress relief. The architecture of the hardware is described in more details, signal processing algorithms, as well as the comparative literature analysis which informed the multi- Dimensional approach to the emotional wellbeing. Index Terms--Anxiety management Biofeedback ESP32 Haptic intervention Heart rate variability (HRV) MAX30102 Stress Relief Wearable Technology.