Interfacing LCD, Keypad and Motor Driver ... using an external programmer and Willar Software. Recommend Reading: Password Based Circuit Breaker Project Circuit Diagram and Working. Password Based ...

This diagram showcases the circuit setup without the use of a breadboard however ... This system can be used for various applications such as password-based door locks etc with only minor adjustments ...

If the password is wrong then door is remain closed and displays “pwd is wrong” on LCD. Password based door lock circuit design uses five major components – a Microcontroller, a Relay, a DC motor, a ...

The password based circuit breaker ... the controller while the LCD is used to display the information. In addition, the lamp and motor are connected to P3.0 and P3.1 through the relays. These are ...