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The main objective of this project is to develop Coin based mobile charging by using a microcontroller along with circuits of IR sensor which we putting the coin inside it and relay of the charger is automatically ON for particular time.
An arrangement operates user putting their coin inside IR sensor which are placed opposite to each other Rx and Tx. while coin is putted in it the ray will break and comparator signal gives to microcontroller which interfaced to taking as input. As soon as coin inserted the relay will ON like this programmed by controller and at same time LCD display the time period of how much time relay will ON. Now days it is necessary because everyone is having his own mobile and person is in the unknown placed then this system will works properly. Instead of asking anyone its better to put coin and charge mobile. This project is more helps for the passengers to develop and placed in bus stand, railway station etc. A standard power supply is used. A LCD displays the status.