int variabile;
int bevanda;
int soglia=250;
int buttonA = 51;
int buttonB = 52;
int buttonC = 53;
int buttonD = 30;
int buttonE = 41;
int rele2 = 27;
int rele3 = 28;
int rele4 = 29;
int rele1 = 26;
int tempo = 10;
int lettura = analogRead(A0);

void setup()
{

  Serial.begin(9600);
  pinMode(buttonA, INPUT);
  pinMode(buttonB, INPUT);
  pinMode(buttonC, INPUT);
  pinMode(buttonD, INPUT);
  pinMode(buttonE, INPUT);
  pinMode(rele2, OUTPUT);
  pinMode(rele3, OUTPUT);
  pinMode(rele4, OUTPUT);
  pinMode(rele1, OUTPUT);

}

void loop()
{
Serial.println();

digitalWrite(rele1, HIGH);
digitalWrite(rele4, HIGH);
digitalWrite(rele3, HIGH);
digitalWrite(rele2, HIGH);


bevanda=rele1;

if(digitalRead(buttonA)==HIGH)
{
bevanda=rele2;
Serial.println(1);
}

if(digitalRead(buttonB)==HIGH)
{
bevanda=rele3;
Serial.println(2);
}

if(digitalRead(buttonC)==HIGH)
{
bevanda=rele4;
Serial.println(3);
}


if(bevanda != rele1)
{
  while(lettura < soglia)
{
  digitalWrite(rele1, LOW);
  digitalWrite(bevanda, LOW);
  Serial.println(4);
}
}

if(lettura > soglia){variabile=3;}

}