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DESCRIPTION : This project demonstrates how to interface a 4x4 matrix keypad with an LCD (16x2) display using an Arduino board. The system captures key presses from the user via the keypad and ...

The Arduino Wire library is a core aspect of Arduino's integrated development environment, or IDE, and is a must-have if you're using sensors or extra microcontrollers in your project.

The brains of the project is an Arduino. There’s a keypad for inputting pass codes and an LCD screen for ... For a laser trip wire sans keypad, check out this portable one. Posted in ...