import time
from machine import Pin
from hcsr04 import HCSR04

ds = None


ultraSoundSensor = HCSR04(trigger_pin=(12), echo_pin=(13), echo_timeout_us=10000)
while True:
  ds = (ultraSoundSensor.distance_mm()) / 10
  print(str(ds) + 'cm')
  time.sleep(1)