#internal pull down
import machine
import time

led = machine.Pin(2, machine.Pin.OUT)
switch = machine.Pin(14, machine.Pin.IN, machine.Pin.PULL_DOWN)

while True:
    if switch.value() == 1:
        led.on()
        time.sleep(0.1)
    else:
        led.off()
        time.sleep(0.1)