#define timeSeconds 10

const int led = 26;          // GPIO 26 (you can change this to your desired pin)
const int motionSensor = 25; // GPIO 25 (you can change this to your desired pin)

unsigned long now = 0;
unsigned long lastTrigger = 0;
boolean startTimer = false;

void IRAM_ATTR detectsMovement() {
  Serial.println("MOTION DETECTED!!!");
  digitalWrite(led, HIGH);
  startTimer = true;
  lastTrigger = millis();
}

void setup() {
  Serial.begin(115200);
  pinMode(motionSensor, INPUT);
  attachInterrupt(digitalPinToInterrupt(motionSensor), detectsMovement, RISING);
  pinMode(led, OUTPUT);
  digitalWrite(led, LOW);
}

void loop() {
  now = millis();

  if (startTimer && (now - lastTrigger > (timeSeconds * 1000))) {
    Serial.println("Motion stopped...");
    digitalWrite(led, LOW);
    startTimer = false;
  }
}