from machine import Pin
from hcsr04 import HCSR04
from time import sleep
sensor = HCSR04(trigger-pin=33,echo-pin=32,echo-timeout-us=1000000)
ledr=Pin(17,Pin.OUT)
ledj=Pin(4,Pin.OUT)
ledv=Pin(16,Pin.OUT)
buzzer=Pin(25,Pin.OUT)
while True :
  dist=sensor.distance-cm()
  print (dist)
  if dist<=15 :
    ledr.on()
    ledv.off()
    ledj.off()
    for i in range(10):
      buzzer.on()
      sleep(0.5)
      buzzer.off()
      sleep(0.5)
  elif 15< dist <25 :
        ledj.on()
        ledr.off()
        ledv.off()
        buzzer.off()
  elif dist>=25 :
          ledv.on()
          ledj.off()
          ledr.off()
          buzzer.off()
  sleep(1)        
        
      



















  sleep (1)