import machine
from machine import Pin
import time

trig=Pin(25,Pin.OUT)
echo=Pin(34,Pin.IN)

while True:
    trig.value(0)
    time.sleep_us(2)

    trig.value(1)
    time.sleep_us(10)
    trig.value(0)

    tt=machine.time_pulse_us(echo,1)

    distance=(tt*0.03444)/2
    print("Distance: ",distance)
    time.sleep(2)