void setup(){
pinMode(14, OUTPUT);
pinMode(12, INPUT);
}

//................................
//variaveis

bool controle = 0,
     atual = 0,
     anterior = 0;

//.................................
//loop 

void loop(){
atual = digitalRead(12);
delay(100);    //debounce 
 
 if (atual && !anterior){

   controle = !controle;
 }
atual = anterior;

if (controle){
digitalWrite(14, HIGH);
delay(1000);

}else{
digitalWrite(14, LOW);
delay(1000);

}




}