GitHub

Arduino code for a 2×3 programmable keypad

This Arduino code is intended for use with an Adafruit Trinket M0 and six key switches. The key switches should be arranged in three rows and two columns. The keys should be wired to the five IO pins ...
EDN

Arduino with Keypad Tutorial

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 ...
GitHub

A low-level driver for a 4x4 keypad on the AVR ATMega28P microcontroller

The 8 keypad pins connected directly to the Arduino pin headers (The choice for the pins is explained in the next section) Optional external pull-up resistors for the row pins (R1, R2, R3, R4) ...
Geeky Gadgets

Arduino 42-Digit SPI Keypad Matrix (video)

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 ...
Geeky Gadgets

LCD, Keypad, Enclosure Expansion Arduino Shield (video)

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. JEM ...