from machine import Pin
import utime
trigger = Pin(15,Pin.OUT)
echo = Pin(14,Pin.IN)
while True:
   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("Total Distance ",distance,"cm")
   print("sensor")
   utime.sleep(1)