ATMOSPHERIC WATER GENERATOR FROM HUMIDITY USING SMART AUTOMATION SYSTEM WITH RASPBERRY PI

Abstract

Water scarcity is one of the most critical global challenges of the 21st century. Despite water covering over 70% of the Earth's surface, only 2.5% is freshwater, and a significant portion of that is inaccessible in glaciers and deep groundwater. This project presents the design and implementation of an Atmospheric Water Generator (AWG) using a Raspberry Pi microcontroller and Peltier thermoelectric modules. The system extracts moisture from ambient air through a condensation-based process and converts it into potable water. The system leverages the thermoelectric cooling effect of Peltier modules to cool a copper coil below the dew point, causing moisture in the air to condense on the coil surface. The condensed water is then collected, filtered, and stored for consumption. A DHT11 sensor continuously monitors ambient temperature and humidity levels, and the data is processed by the Raspberry Pi to intelligently control the system. An LCD display provides real-time readings of temperature, humidity, and water level. A DC fan and relay-controlled motor manage the airflow and water collection pump, respectively. The proposed system is compact, low-cost, energy-efficient, and environmentally friendly. Unlike conventional desalination plants, this AWG does not require access to a water body and can operate anywhere with sufficient atmospheric humidity. Experimental results demonstrate that the system can reliably generate potable water in coastal and high-humidity environments where relative humidity is typically between 70– 80%. The integration of Raspberry Pi provides intelligent automation and the potential for IoT-based remote monitoring