My LED strip doesn't want to light up

[luka123k]

Hi, so I have been trying to use a Arduino Nano on my LED Strip https://www.chipoteka.hr/artikl/150207/led-traka-rgb-5v-adresabilna-30x5050-epistar-led-1-metar-8090229195 but when I plug everything in it and upload the code nothing lights up. I'm a beginner and I've been following this YouTube video Use Addressable LED Strip with Arduino || Essential Engineering - YouTube.
This is the code I have for now

#include <FastLED.h>
#define LED_PIN 2
#define NUM_LEDS 4

CRGB leds[NUM_LEDS];
void setup() {
  FastLED.addLeds <WS2812, LED_PIN, RGB>(leds, NUM_LEDS);
  FastLED.setMaxPowerInVoltsAndMilliamps(5, 500);
  FastLED.clear();
  FastLED.show();

}

void loop() {
  // RED GREEN BLUE
  leds[0] = CRGB(255, 0, 0);
  leds[1] = CRGB(0, 255, 0);
  leds[2] = CRGB(0, 0, 255);
  FastLED.show();

}

If anyone could help me out that would mean a lot.

[UKHeliBob]

Your topic has been moved here as this forum section is more appropriate than where it was originally posted.

The easier you make it to read and copy the code the more likely it is that you will get help

Please follow the advice given in the link below when posting code

How to get the best out of this forum

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[alto777]

That all looks plausible, if you’ve correctly hooked the three wires going off you picture to the LED strip which is somewhere off the picture.

Is that a 330 ohm resistor in series with the data line in pin 2? I can’t tell for sure; that’s what your friend in the video used and shoukd be fine.

It doesn’t matter if you don’t have exactly 4 LEDs.

So a mystery just now, check your wiring. Are you powering this through the USB which is unconnected in the picture?

Power shouldn’t be an issue yet. With more LEDs you will want to supply 5 volts directly to the 5 volt pin upon the strip.

You could replace the 255 with, say, 50 in all three places to save your eyes, these things be bright. It would also draw less power. Which shouldn’t be the problem, so.

FastLED.setMaxPowerInVoltsAndMilliamps(5, 500);

I’ve never known about this nor used it, it’s tots OK in this circumstance to comment that line out on the slim chance it has anything to do with anything.

HTH

a7

[luka123k]

@alto777

Are you powering this through the USB which is unconnected in the picture?

no everything is connected to the breadboard

except for these 2 wires

[luka123k]

@alto777

Is that a 330 ohm resistor in series with the data line in pin 2?

yes I am using all the same parts that are shown in the video