bool
valA1 = 1,
valB1 = 1,
valClDA2 = 1,
valClDB2 = 1,
startTimerClawDelay;

float valT1, valT2, timeoutSet = 1; //sec
uint16_t tickEvery_ms = 100;

void setup() {
  Serial.begin(115200);
  pinMode(2, INPUT_PULLUP);
  pinMode(13, OUTPUT);
}

void loop() {
  valB1 = digitalRead(2);
  if(valA1 == 1 && valB1 == 0){
    timerStart(timeoutSet);
    digitalWrite(LED_BUILTIN, HIGH);
  }
  valA1 = valB1;
  timerTask();
  if(startTimerClawDelay == 0){digitalWrite(13, LOW);}
  
}

void timerStart(float timeout){startTimerClawDelay = 1; valT2 = timeout;}
void timerTask(){
  valClDB2 = (millis()/(tickEvery_ms/2))%2;
  if(valClDA2 == 0 && valClDB2 == 1 && startTimerClawDelay == 1){
    if(valT2 > 0){valT2 -= 0.1;}
    if(valT2 <= 0){startTimerClawDelay = 0;}   
  }
  valClDA2 = valClDB2;
}