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 ... Next is a project example, where ...

Putting a custom designed electronic lock on your space seems ... The input circuit is a simple keypad matrix. To read each button push, the Arduino brings one keypad input line high and checks ...

Arduino enthusiasts or those looking to learn ... in a new Kickstarter campaign and Arduino compatible 42-Digit SPI Keypad Matrix which is being created by Kickstarter entrepreneur Patrick Thomas ...

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 ...

based on a keypad. The hack is still pretty hardware intensive, but Arduino fans will love this clever hack—especially if you're the type that locks yourself out of your room a lot. It works as ...

Electronic and Arduino enthusiasts searching for ... “Last year I’ve made two door lock projects. One was the keypad project and the second one was an RFID door lock project each with a ...