Keypad - 12 Button
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.
- PIC HEX Pad Tutorial
- Arduino Instructable
- Arduino Keypad Library
- Alarm System Project
- Bildr Example
Product pictures and description are of Sparkfun.com