from machine import Pin 
import time 

trig = Pin(23 , Pin.OUT)
echo = Pin(22 , Pin.IN)
Ton = Toff = distance = 0 
relay_in = Pin(27 , Pin.OUT)
relay_out = Pin(18 , Pin.IN)
while 1 :
    trig.value(1)
    time.sleep_us(10)
    trig.value(0)
    time.sleep_us(2)

    while echo.value() == 0:
        Toff = time.ticks_us()
    while echo.value() == 1 :
        Ton = time.ticks_us()
    t = (Ton - Toff) / 2
    distance = t*0.034
    water = 400 - distance
    #print(water)
    if( 100 < water < 300):
        print("jawna behi")
        relay_in.on()
        relay_out.on()
    if(water < 100):
        print("raw fragh bara 3abi")
        relay_in.on()
        relay_out.off()
    if(water > 300):
        print("ejri raw t3aba barcha")
        relay_in.off()
        relay_out.on()