keypad

Interfacing 4x4 Membrane Keypad with Arduino What’s Inside a 4x4 Membrane Keypad and How to Interface it with an Arduino?

A 4x4 membrane keypad is a compact and a cost-effective input device that is commonly used…

Password based Digital Keypad Security Door Lock using Arduino Digital Keypad Security Door Lock using Arduino

Often times, we need to secure a room at our home or office (perhaps a secret dexter’s laboratory) so that no one can access…

Electronic code lock using 8051 Microcontorller Digital Code Lock using 8051 Microcontroller

Security is a major concern in our day to day life, and digital locks have become an important part of these security systems.…

Keypad Interfacing with Arduino Uno Keypad Interfacing with Arduino Uno

In this tutorial we are going to interface a 4x4 (16 key) keypad with ARDUINO UNO. We all know keypad is one of the most…

4x4 Matrix Keypad Interfacing with 8051 Microcontroller 4x4 Matrix Keypad Interfacing with 8051 Microcontroller

Keypads are widely used input devices being used in various electronics and embedded projects. They are used to take inputs in…