This is an intelligent coinbase mobile charging system that charges your mobile phone for a period of time when you insert a coin. This system is intended to be used to provide mobile charging options in public places such as store owners and train stations. Therefore, the system consists of a coin recognition module that recognizes valid coins and signals the microcontroller to perform further steps. When a valid coin is found, it signals the microcontroller, which initiates a mobile charging mechanism that supplies 5V power through the power section of the mobile phone. The system should also monitor the amount of charge provided. Therefore, the microcontroller starts a reverse countdown timer to display the charging time of the mobile phone. If the user inserts another coin during this time, the microcontroller will add time to the current remaining charge time and start a reverse countdown. In this way, the system can be used for intelligent mobile charging in public places.
