LED indicator for data pin

hello, Im controlling ws2812b using an arduino nano(ambilight), and the data sent out by D3
I just want to make a normal led (like TX and RX led) to show me that the D3 is working
can someone help me?
thanks

This should help:

//Demonstrates how to control one pixel

#include <Adafruit_NeoPixel.h>

#define PIN        3
#define PixelCount 1

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PixelCount, PIN, NEO_GRB + NEO_KHZ800);

void setup()
{
  strip.begin();
  strip.setPixelColor(0, 0);
  strip.show(); // Initialize all pixels to 'off'

} //END of   s e t u p ( )

void loop()
{
  //turn on one neo pixel
  strip.setPixelColor(0, strip.Color(255, 0, 0));     //Red
  //strip.setPixelColor(0,strip.Color(0, 255, 0));      //Green
  //strip.setPixelColor(0,strip.Color(0, 0, 255));      //Blue
  //strip.setPixelColor(0,strip.Color(255, 255, 255));  //White

  strip.show();

  delay(500);
  strip.setPixelColor(0, strip.Color(0, 0, 0));         //Turn off pixel
  strip.show();
  delay(500);

} // END of      l o o p ( )

thanks. but my purpose was to use only the D3 to control the led strip ambbilight and by the way light up the indicator

You are going to have to explain things better.
Give us a link to your hardware.

Show us a good schematic of your circuit.
Show us a good image of your wiring.

I said, it’s like the Tx Rx led, blinking means Tx or Rx is working
so I want to make a similar one but with the D3 pin

Use pin 13.
That will flash the onboard LED.
Leo..

Add a LED and a series 470Ω resistor on pin 3 then connect to GND/+5V similar to D1 or D2 in the attached image.

.

kaitoukid93:
I said, it's like the Tx Rx led, blinking means Tx or Rx is working
so I want to make a similar one but with the D3 pin

In that circuit connect a 470R resistor to the free end of the LED and then the other end of the resistor to ground.

It will flash when ever you call the show method.

thanks all of you
thankssssss