import machine
from machine import Pin
import time

T = Pin(23, Pin.OUT)
E = Pin(34, Pin.IN)

while True:
    T.value(0)
    time.sleep_us(1)
    T.value(1)
    time.sleep_us(10)
    T.value(0)
    Ttime = machine.time_pulse_us(E,1)
    distance=(Ttime*0.03)/2
    print(distance)
    time.sleep(2)