#include <Wire.h>
#include <math.h> 
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>

Adafruit_MPU6050 mpu;

unsigned long timeout = 0;

void setup() {
  Serial.begin(9600);

pinMode(18, OUTPUT);

    while (!mpu.begin()) {
    Serial.println("MPU6050 not connected!");
    delay(1000);
  }
  Serial.println("MPU6050 ready!");
}

sensors_event_t event;

void loop() {
    mpu.getAccelerometerSensor()->getEvent(&event);

  if (timeout < millis()) {
    Serial.print("Accelerometer x: ");
    Serial.print(event.acceleration.x );
    Serial.print(" y: ");
    Serial.print(event.acceleration.y );
    Serial.print(" z: ");
    Serial.println(event.acceleration.z );

    int res = sqrt( pow (event.acceleration.x , 2) + pow (event.acceleration.y , 2) + pow (event.acceleration.z , 2) );
    Serial.println(res);

    Serial.println("");

  timeout = millis() + 1000;
  
   if(res < 15){
    digitalWrite(18, HIGH);  
  } else {
    digitalWrite(18, LOW);
  }
  delay(500);
} 
}