Objective: 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 ...

//const byte rowPins[ROWS] = {7, 8, 9, 10, 11}; //connect to the row pinouts of the keypad const byte rowPins[ROWS] = { A0, A1, A2, A3, A4 }; //connect to the row ...

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 ...

Arduino enthusiasts or those looking to learn more about programming with Arduino and electronics-in-general may be interested in a new Kickstarter campaign and Arduino compatible 42-Digit SPI Keypad ...