int led = 2 ;
int led1 = 3 ;
int led2 = 4 ;
int led3 = 5 ;

int pulsador = 6 ; 
int p ;
int pulsador1 = 7 ;
int p1 ;
int pulsador2 = 8 ;
int p2 ;

int lleno = 9 ;
int bacio =10 ;
const int trig = 11 ;
const int echo = 12 ;
int tiempo ;
int distancia ;

int lleno2 = 13 ;
int bacio2 = 14 ;
const int trig2 = 15 ;
const int echo2 = 16 ;
int tiempo2 ;
int distancia2 ;

int lleno3 = 17 ;
int bacio3 = 18 ;
const int trig3 = 19 ;
const int echo3 = 20 ;
int tiempo3 ;
int distancia3 ;

void setup() 
{
  pinMode ( led , OUTPUT ) ;
  pinMode ( led1 , OUTPUT ) ;
  pinMode ( led2 , OUTPUT ) ;
  pinMode ( led3 , OUTPUT ) ;
  pinMode ( pulsador , INPUT ) ;
  pinMode ( pulsador1 , INPUT ) ;
  pinMode ( pulsador2 , INPUT ) ;

  pinMode ( lleno , OUTPUT ) ;
  pinMode ( bacio , OUTPUT ) ;
  pinMode ( trig , OUTPUT ) ;
  pinMode ( echo , INPUT ) ;

  pinMode ( lleno2 , OUTPUT ) ;
  pinMode ( bacio2 , OUTPUT ) ;
  pinMode ( trig2 , OUTPUT ) ;
  pinMode ( echo2 , INPUT ) ;

  pinMode ( lleno3 , OUTPUT ) ;
  pinMode ( bacio3 , OUTPUT ) ;
  pinMode ( trig3 , OUTPUT ) ;
  pinMode  ( echo3 , INPUT ) ;

  digitalWrite ( trig , LOW ) ;
  digitalWrite ( trig2 , LOW ) ;
  digitalWrite ( trig3 , LOW ) ;

  Serial.begin ( 9600 ) ;
  
}

void loop()
{
 p = digitalRead ( pulsador ) ;
 p1 = digitalRead ( pulsador1 ) ;
 p2 = digitalRead ( pulsador2 ) ;
  if ( p == LOW )
  {
  digitalWrite ( led , HIGH ) ;
  digitalWrite ( led1 , HIGH ) ; 
  delay ( 1000 ) ;
  digitalWrite ( led1 , LOW ) ;
  digitalWrite ( led2 , HIGH ) ; 
  delay ( 1000 ) ;
  digitalWrite ( led2 , LOW ) ;
  digitalWrite ( led3 , HIGH ) ;
  delay ( 1000 ) ;
  digitalWrite ( led3 , LOW ) ;
  }
  if ( p1 == LOW )
  {
  digitalWrite ( led , HIGH ) ;
  digitalWrite ( led1 , HIGH ) ;
  delay ( 3000 ) ;
  digitalWrite ( led1 , LOW ) ;
  digitalWrite ( led2 , HIGH ) ;
  delay ( 3000 ) ;
  digitalWrite ( led2 , LOW ) ;
  digitalWrite ( led3 , HIGH ) ;
  delay ( 3000 ) ;
  digitalWrite ( led3 , LOW ) ;
  }
  if ( p2 == LOW )
  {
  digitalWrite ( led , HIGH ) ;
  digitalWrite ( led1 , HIGH ) ;
  delay ( 500 ) ;
  digitalWrite ( led1 , LOW ) ;
  digitalWrite ( led2 , HIGH ) ;
  delay ( 500 ) ;
  digitalWrite ( led2, LOW ) ;
  digitalWrite ( led3 , HIGH ) ;
  delay ( 500 ) ;
  digitalWrite ( led3 , LOW ) ; 
  }
  else
  {
  digitalWrite ( led , LOW ) ;
  digitalWrite ( led1 , LOW ) ;
  digitalWrite ( led2 , LOW ) ;
  digitalWrite ( led3 , LOW ) ;
  }



  digitalWrite ( trig , HIGH ) ;
  delayMicroseconds ( 10 ) ;
  digitalWrite ( trig , LOW ) ;

 tiempo = pulseIn ( echo , HIGH ) ;

 distancia = tiempo/59 ;
 
 Serial.println ( distancia ) ;
 Serial.println ( "cm" ) ;
    


 if ( distancia >= 17 )
{
digitalWrite ( bacio , HIGH ) ;
digitalWrite ( lleno , LOW ) ;
}
else
{
digitalWrite ( bacio , LOW ) ;
digitalWrite ( lleno , HIGH ) ;
}



  digitalWrite ( trig2 , HIGH ) ;
  delayMicroseconds ( 10 ) ;
  digitalWrite ( trig2 , LOW ) ;

 tiempo2 = pulseIn (echo2, HIGH) ;

 distancia2 = tiempo2/59 ;
 
 Serial.println (distancia2);
 Serial.println ("cm");
    


 if ( distancia2 >= 17 )
{
digitalWrite ( bacio2 , HIGH ) ;
digitalWrite ( lleno2 , LOW ) ;
}
else
{
digitalWrite ( bacio2 , LOW ) ;
digitalWrite ( lleno2 , HIGH ) ; 
}



  digitalWrite ( trig3 , HIGH ) ;
  delayMicroseconds ( 10 ) ;
  digitalWrite ( trig3 , LOW ) ;

 tiempo3 = pulseIn ( echo3 , HIGH ) ;

 distancia3 = tiempo3/59 ;
 
 Serial.println ( distancia3 ) ;
 Serial.println ("cm");
    


 if ( distancia3 >= 17 )
{
digitalWrite ( bacio3 , HIGH ) ;
digitalWrite ( lleno3 , LOW ) ;
}
else
{
digitalWrite ( bacio3 , LOW ) ;
digitalWrite ( lleno3 , HIGH ) ; 
}
}