Open djairjr opened 1 year ago
import adafruit_matrixkeypad import adafruit_pcf8574 from digitalio import DigitalInOut import board import time # Using default i2c with board.SDA e board.SCL i2c = board.I2C() pcf = adafruit_pcf8574.PCF8574(i2c, 0x20) # Classic 3x4 matrix keypad # I directly soldered the pcf8574 module on the keypad # with pinout C2 R1 C1 R4 C3 R3 R2 cols = [pcf.get_pin(4), pcf.get_pin(6), pcf.get_pin(2)] rows = [pcf.get_pin(5), pcf.get_pin(0), pcf.get_pin(1), pcf.get_pin(3)] keys = ((1, 2, 3), (4, 5, 6), (7, 8, 9), ('*', 0, '#')) keypad = adafruit_matrixkeypad.Matrix_Keypad(rows, cols, keys) while True: keys = keypad.pressed_keys if keys: print("Pressed: ", keys) time.sleep(0.1)
Matrix Keypad
Using I2C Port Expander With Matrix Keypad