This is a basic 12-key keypad designed to facilitate user input and functionality. The keypad has 12 buttons arranged in a 3x4 matrix. You only need 7 microcontroller pins to scan the keyboard to see which of the 12 buttons is pressed.
We also have a 4x4 version of our matrix keyboard, click here to learn more.
Feature
4x3 12-button matrix keyboard module;
Keyboard Matrix allows you to quickly add controls to your electronics projects;
It provides numbers from 0 to 9, as well as standard star (*) and hash symbols;