User enters the password using the keypad. LCD displays whether access is granted or denied. You can modify the code to control a door motor/lock mechanism.

This project is an Arduino-based password entry system that uses a 4x4 keypad for input and a 16x2 I2C LCD display to show messages. The system allows users to input a password, which is then ...

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

Makers and developers that enjoy creating projects using the Arduino platform may be interested in a new shield for Arduino that incorporates an LCD JEMshield++, keypad and enclosure all in one. JEM ...

Abstract: In an era where homeowners frequently leave for work or education, robust security for residences is imperative. Traditional security measures, including window and door locks, present ...