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 ...

This project is an Arduino-based password validator. It uses a keypad for input, a buzzer for incorrect password alerts, and an LED to indicate when the correct password is entered. The user inputs a ...

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 ...

If you want to add a keypad to your Arduino project, the options are pretty limited. There’s that red and blue 4×4 membrane we’ve all seen in password-protected door lock projects, and the phone ...

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 ...

[Sam Horne] adapted an old school landline phone to deliver clues to birthday party guests. When guests find a numerical clue, they type it into the keypad to hear the next clue, which involves ...

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 ...