gabriel-tandil / presencia Goto Github PK

// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int min = 1024;
int max =0;
int anterior=0;
int medio=512;
int sensibilidad=50;
int led = 13;

// the setup routine runs once when you press reset:
void setup() {
  pinMode(led, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() {
  int valor=analogRead(A0);

  if (valor>anterior)//esta subiendo
    max=valor;
   if (valor<anterior)//esta bajando
    min=valor;
    anterior=valor;
  if(min<medio-sensibilidad &&max>medio+sensibilidad){
    digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  }
}