from machine import Pin
import utime

trigger = Pin(17,Pin.OUT)
echo = Pin(16,Pin.IN)
LED = Pin(10,Pin.OUT)

def ultra():
    trigger.low()
    utime.sleep_us(2)
    trigger.high()
    utime.sleep_us(10)
    trigger.low()

    while echo.value()==0:
        t1 = utime.ticks_us()
    while echo.value()==1:
        t2 = utime.ticks_us()
    tp = t2 - t1
    distance = (tp*0.0343)/2
    print("Distance from object is:",distance,"CM")
    if(distance<=10):
        LED.value(1)
    else:
        LED.value(0)

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