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.
Based on 2 ratings:
If you can figure out how to keep it from coming apart, you’ll be golden. For a few dollars though, not bad. Mentioned before but put headers on it so you won’t need to resolder it and maybe some hot glue on the back to help the little rivet like posts hold it together.
Once I soldered some pins and figured out how to hook it up properly to my PIC18F4550 it worked great! Solid little keypad.