# Distance sensor basic:
print("Hello, Pi Pico W!")
from machine import Pin
import utime
trigger = Pin(3, Pin.OUT)
echo = Pin(2, Pin.IN)
Led1 = Pin(9, Pin.OUT)
distance = 0
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
global distance
distance = (timepassed * 0.0343) / 2
print("The distance from object is ",distance,"cm")
while True:
ultra()
utime.sleep(1)
if distance < 30:
Led1.on()
utime.sleep_us(2)
print("object is close")
else:
Led1.off()