Controlling WS2812 RGB LED with color with 4 button

Other Hardware LEDs and Multiplexing
1

Any references to control 1 piece of WS2812 RGB LED with 4 different buttons?
I tried to use this but it won't work.

#include <FastLED.h>
#define LED_PIN     3
CRGB leds[1];
int button1 = 5;
int button2 = 6;
int button3 = 7;
int button4 = 8;

void setup() {
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, 1);
  pinMode(3, OUTPUT);
  pinMode(5, INPUT);
  pinMode(6, INPUT);
  pinMode(7, INPUT);
  pinMode(8, INPUT);
}

void loop() {
    if (digitalRead(button1) == HIGH){
      leds[1] = CRGB (255, 0, 0);
      FastLED.show();
    }

    else if(digitalRead(button2) == HIGH){
      leds[1] = CRGB (0, 255, 0);
      FastLED.show();
    }

    else if (digitalRead(button3) == HIGH){
      leds[1] = CRGB (0, 0, 255);
      FastLED.show();
    }

    else if (digitalRead(button4) == HIGH){
      leds[1] = CRGB (255, 125, 0);
      FastLED.show();
    }
  }
2

The phrase "won't work" conveys no useful information. Something must happen even if it is not what you want.

Do you have pulldown resistors on the switch inputs?

3

The only things that happening are the changes of state of the button.

No, I only use Arduino, 4 buttons and 1 WS2812 LED.

4

See Button FAQ: common mistake - button does NOT work as expected.

5

Nevermind guys, I already fix my code

#include <FastLED.h>

#define LED_PIN     3
#define NUM_LEDS    1

CRGB leds[NUM_LEDS];

const byte button1 = 5;
const byte button2 = 6;
const byte button3 = 7;
const byte button4 = 8;

void setup() {
  FastLED.addLeds<WS2812, LED_PIN, GRB>(leds, NUM_LEDS);
  pinMode(button1, INPUT_PULLUP);
  pinMode(button2, INPUT_PULLUP);
  pinMode(button3, INPUT_PULLUP);
  pinMode(button4, INPUT_PULLUP); 
}

void loop() {
  if (!digitalRead(button1)){
    leds[0] = CRGB(255, 0, 0);
    FastLED.show();   
  }

  else if (!digitalRead(button2)){
    leds[0] = CRGB(0, 255, 0);
    FastLED.show();   
  }

  else if (!digitalRead(button3)){
    leds[0] = CRGB(0, 0, 255);
    FastLED.show();   
  }
  else if (!digitalRead(button4)){
    leds[0] = CRGB(255, 125, 0);
    FastLED.show();
  }

  else{
    leds[0] = CRGB(0, 0, 0);
    FastLED.show();
  }
}