const int Bot = 10;
int contador = 0;
void setup() {
  // put your setup code here, to run once:
 pinMode(12, OUTPUT);
 pinMode(Bot, INPUT_PULLUP);
 Serial.begin(9600);
 delay(1000);
}

void loop() {
  // put your main code here, to run repeatedly:
if (!digitalRead(Bot)){
  contador++;
  if (contador == 1){
digitalWrite(12, HIGH);
Serial.println("Ligado");
delay(1000);
  }
}
if (!digitalRead(Bot)){
  contador--;
  if (contador == 0){
digitalWrite(12, LOW);
Serial.println("desligado");
delay(1000);}
}
}