from machine import Pin 
import utime
trigger = Pin(3,Pin.OUT)
echo = Pin(2, Pin.IN)
def ultra ():
    trigger.low()
    utime.sleep_us(2)
    trigger.high()
    utime.sleep_us(5)
    trigger.low()
    while echo.value() == 0:
        pass
    signalon = utime.ticks_us()
    while echo.value() ==1:
        pass
    signaloff = utime.ticks_us()
    timpassed = signaloff - signalon
    distance = (timpassed * 0.0343) / 2
    print("The Distance from object is ",distance,"cm")
while True:
    ultra()
    utime.sleep(1)