#from HCSR04 import hcsr04
import machine
from machine import Pin 
from time import sleep

Echo = Pin(33,Pin.IN)
trig = Pin(25,Pin.OUT)

while True:
    trig.value(0)
    sleep(1)
    trig.value(1)
    sleep(1)
    trig.value(0)

    x= machine.time_pulse_us(Echo,1)
    d= (0.0343 * x)/2

    print("distance :",d ,'cm')
    sleep(1)


#while True:
 #   distance = sensor.distance_cm()
#  print("Distance : ", distance,'cm')
  #  sleep(1)