from machine import Pin
import utime

trigger = Pin(4, Pin.OUT)
echo = Pin(2, Pin.IN)

def ultra():
    trigger.value(0)
    utime.sleep_us(2)
    trigger.value(1)
    utime.sleep_us(5)
    trigger.value(0)
    while echo.value() == 0:
        signal off = utime.ticks_us()
    while echo.value() == 1:
        signalon = utime.ticks_us()
    timepassed = signalon - signaloff
    distance = (timepassed*0.0343) / 2
    print("Jarak dari Objek adalah", distnce, "cm")

    while True:
        ultra()
        utime.sleep(1)