This project is an Arduino-based calculator that uses a 4x4 keypad for input and an I2C LCD for output. The calculator can perform basic arithmetic operations such as addition, subtraction, ...
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 ...
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 ...
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