#include <SoftwareSerial.h>
SoftwareSerial mySerialE(3,4);
int valor;
void setup() {
  // put your setup code here, to run once:
  mySerialE.begin(9600);
  pinMode(0,OUTPUT);  
}

void loop() {
  // put your main code here, to run repeatedly: 
  if (mySerialE.available() > 0) {
    valor = mySerialE.read();
  if (valor=='3'){
  int valor2=analogRead(A1);
  if (valor>500){
    digitalWrite(0,HIGH);
  }
  else{
    digitalWrite(0,LOW);
  }
  }
}
}