import machine 
from machine import Pin
import time 
Trigger=Pin(4,Pin.OUT)
Echo=Pin(5,Pin.IN)
while True:
    Trigger.value(0)
    time.sleep_us(2)
    Trigger.value(1)
    time.sleep_us(10)
    Trigger.value(0)

    totaltime=machine.time_pulse_us(Echo,1)

    distance =(totaltime*0.034)/2
    print(distance)
    time.sleep(2)