The gadget has three buttons, and it changes context based on what app you are looking at. For instance, in meeting apps and ...

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 the room without our permission and ensure protection against theft or loss ...

What is a 4x4 Matrix Keypad? Before we 4x4 matrix keypad interface with the microcontroller, first we need to understand how it works. Matrix keypad consists of a set of Push buttons, which are ...