#include <SoftwareSerial.h>

SoftwareSerial bluetooth(10, 11); // RX, TX
int motorPin = 3; // Vibration motor connected to digital pin 3

void setup() {
  pinMode(motorPin, OUTPUT); // Set the motor pin to output mode
}

void loop() {
  if (bluetooth.available()) { // Check if there is data from bluetooth
    digitalWrite(motorPin, HIGH); // Turn on the vibration motor
    delay(1000); // Vibrate for 1 second
    digitalWrite(motorPin, LOW); // Turn off the vibration motor
    delay(1000); // Wait for 1 second
}