#define trig 22
#define echo 23
#define pump_in 14
#define pump_out 17

int t , water; 
float distance ; 

void setup() {
  pinMode(trig , OUTPUT) ; 
  pinMode(pump_in , OUTPUT) ; 
  pinMode(pump_out , OUTPUT) ; 
  pinMode(echo , INPUT) ; 
  Serial.begin(9600) ; 
}
void loop() {
 digitalWrite(trig , HIGH) ; 
 delayMicroseconds(10) ; 
 digitalWrite(trig , LOW) ; 
 delayMicroseconds(2) ;

  t = pulseIn(echo, HIGH)  ; 
 

  distance = 0.034 * t  ;
  water = 400-distance ;  
  if(water < 100){
    Serial.println("raw fragh");
    digitalWrite(pump_in , HIGH) ; 
    digitalWrite(pump_out , LOW) ; 
  }
  else if(water > 300){
    Serial.println("rahou t3aba barcha") ; 
    digitalWrite(pump_in , LOW) ; 
    digitalWrite(pump_out , HIGH) ; 
  }
  else{
    Serial.println("rahou mrgl fil wost");
    digitalWrite(pump_in , HIGH) ; 
    digitalWrite(pump_out , HIGH) ; 
  }


  //Serial.println("Distance :"+String(distance)+" cm"+"Water :"+String(water));
  delay(50) ; 
  // 343ms -> 0.034cm/us


}