Abstract

The increasing prevalence of dehydration especially among older adults, compounded by climate change, highlights the need for effective hydration tracking solutions. In response, this study presents ”Water?”, an automated water intake tracking system that integrates hardware and software components to monitor daily hydration. The system mainly consists of a load cell and ESP32 microcontroller housed in a custom 3D-printed attachment for water bottles, able to transmit weight changes to a mobile-optimizes web application. The platform allows users to automatically or manually log water consumption and review hydration trends. Targeting at-risk populations such as the elderly, chronically ill, and athletes, “Water?” addresses the affordability limitations of existing commercial solutions costing more than 200% cheaper than US-based brands. Evaluation results show high measurement accuracy (average error of 0.58%), favorable user feedback (overall satisfaction of 4.4 over 5), with all KPIs achieved. The system support SDG 3 by promoting well-being through accessible, user-friendly health technology.

Keywords—automatic water intake tracking, load cell, ESP32, health monitoring, web application

Developed as a requirement for ENGG 38: Software Development