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