#include <Adafruit_NeoPixel.h>

const byte pin_num = 15;
const byte pixel_pin = 13;
const byte led_num = 16;

Adafruit_NeoPixel obj = Adafruit_NeoPixel(led_num , pixel_pin , NEO_GRB + NEO_KHZ800);

void setup(){
  Serial.begin(115200);
  pinMode(pin_num , INPUT);
  obj.begin();
  obj.show();
}

void loop(){
  Serial.println(digitalRead(pin_num));
  delay(1500);
  if (digitalRead(pin_num) == 1){
    Serial.println("Motion has been detected.");
    delay(1500);
    newPattern();
  }
}

void displayPattern(){
  for (int i=0 ; i<16 ; i++){
  obj.setPixelColor(i , 0 , 0 ,250);
  }
obj.show();
delay(1500);
  
}

void newPattern(){
  for (int i = 0 ; i < 16 ;i++){
    int g = random(0 , 255);
    int r = random(0 , 255);
    int b = random(0 , 255);

    obj.setPixelColor(i , g , r , b);
    obj.show();
  }
  delay(500);
}