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,… ...

Many laptops eschew the numeric keypad to free up space, ... So he redirected the PS/2 wires to an Arduino compatible Pro Micro and wrote some conversion code which you can find on his GitHub.

This Arduino code implements a password entry system using a 4x4 keypad and a 16x2 I2C LCD display. Users enter a numeric password, which is then validated against a predefined password. If correct, ...

Initially, the LCD will display the user's student ID followed by the first 10 letters of their last name on the first line. The system continuously accepts two integer inputs (0-9) from the keypad, ...

Makers and developers that enjoy creating projects using the Arduino platform may be interested in a new shield for Arduino that incorporates an LCD JEMshield++, keypad and enclosure all in one.

One of the complaints from my 2007 review of the new Apple keyboard that still stands is about Apple's lack of an extended wireless keyboard.. I can’t believe that Apple dropped the numeric ...