#define pinButton 2
#define pinLED 13

volatile bool signal = false;
volatile int temp = 0;

long debounceDelay = 35;

void isr_Change() {
  // Debounce interrupt trigger
  static unsigned long last_interrupt_time = 0;
  unsigned long interrupt_time = millis();
  // If interrupts come faster than 35ms, assume it's a bounce and ignore
  if (interrupt_time - last_interrupt_time > debounceDelay) 
  {
    temp++;
    if ((temp % 2) == 0) {
      signal = false;
    } else {
      signal = true;
    }
  }
  last_interrupt_time = interrupt_time;
}

void setup() {
  Serial.begin(9600);
  pinMode(pinButton, INPUT_PULLUP);
  pinMode(pinLED, OUTPUT);
  attachInterrupt(digitalPinToInterrupt(pinButton), isr_Change, CHANGE);
}

void loop() {
  if (signal) {
    delay(10);
    digitalWrite(pinLED, signal);
  }
}