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 ...

This Arduino project implements a keypad-based lock system. When the correct code is entered on the keypad, it unlocks a door by lighting a green LED. An incorrect code triggers a red LED to indicate ...

CipherGate is an Arduino-powered electromagnetic door locking system designed to provide secure and user-friendly access control. This system combines an RFID reader, keypad, and LCD display for ...

[Andrea] just sent us this great student hack he made for his room. He’s constructed an Arduino keypad door lock — without using any proper fastening hardware! The entire build is made out of scrap ...

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 ...