import board, time
from analogio import AnalogIn
from pwmio import PWMOut

sensor = AnalogIn(board.GP28)
led = pwmio(board.GP0)
input_value = 0

# turn on at full brightness for a second
led.duty_cycle = 65535
sleep(1)
# turn on at about half brightness for a second
led.duty_cycle = 32000
sleep(1)
#turn off for a second
led.duty_cycle = 0
sleep(1)

while True:
  print(sensor.value)
  led.duty_cycle = input_value