This is a basic 16 button keypad that has been designed for easy user input and functionality. The buttons are set up in a matrix format which allows a microcontroller to ‘scan’ the 8 output pins to see which of the 16 buttons is being pressed.
Each of the keypad’s 16 buttons has been labeled 1, 2, 3, A, 4, 5, 6, B, 7, 8, 9, C, 0, *, #, and D and has been formatted to into the same layout as a telephone keypad with each keypress resistance ranging between 10 and 625 Ohms. We’ve also made sure to create an updated pin-out for this keypad since it is different from the 12 button keypad. The pin-out can be found in the Documents tab above.