Mobile Charging On Coin Insertion

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mobile charging project
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This is the smart coin based mobile charging system that charges your mobile for particular amount of time on inserting a coin. The system is to be used by shop owners, public places like railway stations to provide mobile charging facility. So the system consists of a coin recognition module that recognizes valid coins and then signals the microcontroller for further action. If a valid coin is found it signals the microcontroller and microcontroller then starts the mobile charging mechanism providing a 5V supply through a power supply section to the mobile phone, now system also needs to monitor the amount of charging to be provided. So the microcontroller starts a reverse countdown timer to display the charging time for that mobile phone. Now if the user inserts another coin in that time, the microcontroller adds the time to currently remaining charging time and starts the reverse countdown. So the system can be used for smart mobile charging at public places.



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Hardware Specifications

  • LCD
  • Atmega 328 Microcontroller
  • Coin Sensor
  • LED’s
  • Transformer
  • Resistors
  • Capacitors
  • Diodes
  • Charging Cable

Software Specifications

  • Arduino Compiler
  • MC Programming Language: C
Block Diagram

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