4×3 Matrix (Black) Hard Keypad Module
Description
A basic 12 button keypad for user input. The buttons are setup in a matrix format. This allows a microcontroller to ‘scan’ the 7 output pins to see which of the 12 buttons is being pressed.
Check the examples below for correct pin-outs and such.
Documents:
Datasheet
Arduino Instructable
Arduino Keypad Library
Bildr Example
