int presostato = A0;
float valor = 0;
float volt = 0;
int pausa = 100;
int VERDE = 6;
int AZUL = 5;
int AMARILLO = 4;
int NARANJA = 3;
int ROJO = 2;

void setup() {
  Serial.begin(9600);

pinMode(VERDE, OUTPUT);
pinMode(AZUL, OUTPUT);
pinMode(AMARILLO, OUTPUT);
pinMode(NARANJA, OUTPUT);
pinMode(ROJO, OUTPUT);
}

void loop() {
valor = analogRead(presostato);
volt=valor*5/1023;
if(volt >= 1){
digitalWrite(VERDE, HIGH);
}
if(volt >= 2){
digitalWrite(AZUL, HIGH);
}
if(volt >= 3){
digitalWrite(AMARILLO, HIGH);
}
if(volt >= 4){
digitalWrite(NARANJA, HIGH);
}
if(volt >= 5){
digitalWrite(ROJO, HIGH);
}


if(volt <= 5){
digitalWrite(ROJO, LOW);
}
if(volt <= 4){
digitalWrite(NARANJA, LOW);
}
if(volt <= 3){
digitalWrite(AMARILLO, LOW);
}
if(volt <= 2){
digitalWrite(AZUL, LOW);
}
if(volt <= 1){
digitalWrite(VERDE, LOW);
}
Serial.println(volt);
delay(pausa);
}