from time import sleep
from machine import Pin
import utime

kirmizi = Pin (4, Pin.OUT)
yesil = Pin (5, Pin.OUT)
mavi = Pin (6, Pin.OUT)
trig1 = Pin (2, Pin.OUT)
echo1 = Pin (3, Pin.IN)

def dis1():
 
  trig1.low()
  utime.sleep_us(2)
  trig1.high()
  utime.sleep_us(5)
  trig1.low()

  while echo1.value() == 0:
    signal1off = utime.ticks_us()

  while echo1.value() == 1:
    signal1on = utime.ticks_us()

  timet1 = signal1on - signal1off
  return timet1

while True:
    time1 = dis1()
    cm1 = time1 * 0.034 / 2
    print(cm1)
    if(cm1 <= 7):
        kirmizi.on()
        yesil.off()
        mavi.off()
    if(cm1 > 7 and cm1 < 14):
        kirmizi.off() 
        yesil.on()
        mavi.off()
    if(cm1 > 14 ):
        kirmizi.off()
        yesil.off()
        mavi.on()