When a coin is entered into the coin-based mobile charging system, the phone is charged. This technology is used by
store owners and rural residents, and it can be deployed in public places such as train stations and bus stops to allow mobile
charging. As a result, the coin acceptor detects legitimate coins and alerts the Arduino to take action. If a genuine coin is found,
the Arduino receives a signal and begins the mobile charging mechanism, which provides a 5v supply to the phone via a power
supply section.
