Smart water bottle system using ESP32 microcontroller to aggregate sensor data from water-level, flow, and temperature inputs, then transmit hydration metrics via Wi-Fi/Bluetooth to a mobile app and cloud database. The ESP32 processes dual sensor streams, controls LED/buzzer feedback, and manages power from a rechargeable battery to optimize device runtime. Real-time water intake display, temperature tracking, and hydration reminders sync across the mobile app and cloud storage for persistent consumption history. Fork this diagram on Diagrams.so to customize sensor types, add cloud provider integrations (AWS IoT Core, Azure IoT Hub), or extend with additional biometric inputs. This architecture demonstrates best practices for low-power IoT data pipelines with local processing and cloud synchronization.