Automatic gadget charger using coin detection

In this communication era, mobile -telephone industry has grown profoundly. The urban population uses the latest mobile-phone technology while the rural population buys second hand ones, mostly with degraded battery, that require frequent charging. This battery-problem becomes a giant when user doesnt have a standard charger or an electricity connection. In this paper, researchers intent is to propose a public coin based mobile battery charging system. By using image processing techniques, value of the coin has been detected for a limited time, it will charge the device accordingly. A suitable microcontroller is programmed for all the controlling applications. The source for charging is obtained either from a direct power grid or by solar energy.