1  import time
 2  import board
 3  import digitalio
 4  
 5  print("hello blinka!")
 6  
 7  led = digitalio.DigitalInOut(board.D4)
 8  led.direction = digitalio.Direction.OUTPUT
 9  
10  button = digitalio.DigitalInOut(board.D18)
11  button.direction = digitalio.Direction.INPUT
12  button.pull = digitalio.Pull.DOWN
13  
14  while True:
15      led.value = button.value
16      time.sleep(0.1)