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How to control 32x8 WS2812 LED Matrix with Arduino PART1

This tutorial shows you how to connect the matrix to Arduino and run few simplest programs

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How to control 32x8 WS2812 LED Matrix with Arduino PART1

Things used in this project

Hardware components

Arduino Nano R3
Arduino Nano R3
×1
32x8 WS2812B Led Matrix
×1

Story

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Code

Litting the first and last led in the matrix (white)

Arduino
#include <FastLED.h>
#define NUM_LEDS 256
#define DATA_PIN 12
CRGB leds[NUM_LEDS];

void setup() {   
 FastLED.addLeds<WS2812,DATA_PIN,RGB>(leds,NUM_LEDS);
 FastLED.setBrightness(150);
}
 
void loop() { 
  leds[0]=CRGB::White;
  leds[255]=CRGB::White;
  FastLED.show();
}

Lighting all LEDs one at a time

Arduino
#include <FastLED.h>
#define NUM_LEDS 256
#define DATA_PIN 12
CRGB leds[NUM_LEDS];

void setup() {   
 FastLED.addLeds<WS2812,DATA_PIN,RGB>(leds,NUM_LEDS);
 FastLED.setBrightness(150);
}

void loop() {
 for (int i=0;i<256;i++) {
   if(i>0) leds[i-1]=CRGB::Black;
   leds[i]=CRGB::White;
   FastLED.show();
   delay(20);
 }
}

Blue Red Green snake going through all leds in the matrix

Arduino
#include <FastLED.h>
#define NUM_LEDS 256
#define DATA_PIN 12
CRGB leds[NUM_LEDS];

void setup() {   
 FastLED.addLeds<WS2812,DATA_PIN,RGB>(leds,NUM_LEDS);
 FastLED.setBrightness(150);

void loop() {
 for (int i=0;i<256;i++) {
   if(i>0) leds[i-1]=CRGB::Black;
   leds[i]=CRGB::Blue;
   if (i<255) leds[i+1]=CRGB::Red;
   if (i<254) leds[i+2]=CRGB::Green;
   FastLED.show();
   delay(70);
 }
}

Credits

mdraber

mdraber

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  • Arduino