MicroPython library for interfacing with a keypad matrix
- Supports any keypad matrix configuration.
- Easily customizable for different keypad layouts.
- Provides exception handling for error management.
Example for 4x4 keypad metrix on MicroPython esp32.
from machine import Pin from keypad import Keypad from time import sleep # Define GPIO pins for rows row_pins = [Pin(25),Pin(26),Pin(27),Pin(14)] # Define GPIO pins for columns column_pins = [Pin(23),Pin(22),Pin(19),Pin(18)] # Define keypad layout keys = [ ['1', '2', '3', 'A'], ['4', '5', '6', 'B'], ['7', '8', '9', 'C'], ['*', '0', '#', 'D']] keypad = Keypad(row_pins, column_pins, keys) while True: key_pressed = keypad.read_keypad() if key_pressed: print("Key pressed:", key_pressed) sleep(0.1) # debounce and delay