SOLAR BASED MOBILE CHARGING ON COIN INSERTION

The growing reliance on mobile devices has created an increasing demand for public charging stations, especially in areas where access to conventional power grids is limited. Traditional charging stations often depend on grid electricity, which may not be sustainable or cost-effective in remote locations. To address this issue, this paper introduces a solar-based mobile charging station that operates on coin insertion using Arduino, a solar panel, a rechargeable battery, a relay, a multi-pin charger, a coin box, and a 20x4 LCD display. The system is designed to be energy-efficient, cost-effective, and eco-friendly by harnessing solar power to charge mobile devices. The solar panel generates electricity during the day, which is stored in a rechargeable battery. When a user inserts a coin into the coin box, the system activates the charging circuit by controlling a relay via the Arduino microcontroller. The Arduino also communicates with the LCD display, which provides real-time feedback to the user regarding the charging status, remaining time, and battery health. The system offers a solution that is not only self-sustaining but also promotes the use of renewable energy, reducing the need for grid electricity. The coin mechanism ensures that the user pays for the service, making it suitable for deployment in public areas such as parks, bus stations, and shopping malls. The paper discusses the system's design, working principle, and advantages over traditional charging solutions. Additionally, it highlights the challenges of maintaining consistent power availability due to weather dependencies and the initial setup costs. The solar-based charging station with coin insertion offers a promising alternative to conventional charging infrastructure and encourages the use of green energy in urban and semi-urban environments.