Password based circuit breaker

A password-based circuit breaker using Arduino, keypad, LD (Liquid Crystal Display), and relay module is a system designed to control the power supply to a circuit or electrical equipment using a password-based authentication mechanism. This system ensures authorized access and prevents unauthorized usage or tampering.

The system consists of a keypad, which allows the user to input a password, an LD for displaying relevant information, an Arduino microcontroller to process the inputs and control the system, and a relay module to interrupt or connect the power supply.

When the user enters the correct password through the keypad, the Arduino validates it by comparing it with the stored password. If the password matches, the Arduino sends a signal to the relay module, activating the relay and connecting the power supply to the circuit or electrical equipment.

On the other hand, if an incorrect password is entered, the Arduino displays an error message on the LD and does not trigger the relay, thereby preventing the power supply from being connected.

Additionally, the system can incorporate features such as multiple password attempts, password change functionality, and timeout mechanisms for enhanced security and user convenience. The LD can display prompts and instructions for the user during the password entry process.

By using Arduino as the control unit, this password-based circuit breaker system provides a reliable and secure means of controlling access to electrical circuits or equipment. It ensures that only authorized individuals with the correct password can operate the system, enhancing safety and preventing unauthorized usage.