Staying hydrated is vital for focus and energy, yet easy to neglect during busy days. A new guide from WellAlly details how to build a smart water bottle using Bluetooth Low Energy (BLE) and an ESP32 microcontroller to automate tracking.

The system removes manual logging by sending real-time data to a mobile app. The BLE-PLX library and React Native framework handle connectivity and cross-platform support. A sensor in the bottle detects liquid levels and wirelessly transmits updates to help users stay on track.

This project offers a hands-on entry into the Internet of Medical Things (IoMT), showing how basic components can enable personalized health tools. Developers can expand functionality by adding intake history, custom reminders, and integration with fitness platforms.

Beyond convenience, it’s a step toward embedding health awareness into everyday objects. For developers interested in wearable tech or digital health, this blend of hardware and software provides a practical starting point with tangible benefits.