8x8 WS2812b Animated Sun Effect

Sun effect for 8x8 matrix.

Resistor

Arduino

Adafruit NeoPixel NeoMatrix 8x8 - 64 RGB LED Pixel Matrix

Or another WS2812B 8x8 matrix .

Burning sun effect for 8x8 ws2812b matrix.

Code is in void and void is called in loop.

Connection Resistor to Matrix on PIN 5.

video effect :

https://drive.google.com/file/d/1-2u3_05LD4tOh0YA_nxX3PuDZCa9Avpi/view

#include "Adafruit_NeoPixel.h"

#include "Adafruit_GFX.h"

#define WS2812b_PIN 12

#define WS2812b_PIXELS 64

#define WS2812b_WIDTH 8

#define WS2812b_HEIGHT 8

Adafruit_NeoPixel WS2812b = Adafruit_NeoPixel(WS2812b_PIXELS, WS2812b_PIN, NEO_GRB + NEO_KHZ800);

float wavePhase = 0.0;

unsigned long prevWaveUpdate = 0;

const float waveSpeed = 0.25;

const float waveFrequency = 1.5;

const float waveAmplitude = 0.54;

void setup () {

Serial.begin(9600);

WS2812b.begin();

WS2812b.clear();

WS2812b.show();

}

void drawSunEffect() {

WS2812b.setBrightness(250);

unsigned long currentMillis = millis();

if (currentMillis - prevWaveUpdate > 50) {

wavePhase += waveSpeed;

if (wavePhase >= 2 * PI) wavePhase -= 2 * PI;

prevWaveUpdate = currentMillis;

}

for (int y = 0; y < WS2812b_HEIGHT; y++) {

for (int x = 0; x < WS2812b_WIDTH; x++) {

float distanceToCenter = sqrt((x - 3.5) * (x - 3.5) + (y - 3.5) * (y - 3.5));

float intensity = 1.0 - (distanceToCenter / 5.0);

intensity = constrain(intensity, 0.0, 1.0);

bool isEdge = (x <= 2 || x >= 5 || y <= 2 || y >= 5);

if (isEdge) {

int depth = 0;

if(x <= 2) depth = 2 - x;

else if(x >= 5) depth = x - 5;

if(y <= 2) depth = max(depth, 2 - y);

else if(y >= 5) depth = max(depth, y - 5);

float phase = wavePhase - depth * waveFrequency;

float wave = (sin(phase) + 1.0) / 2.0;

float modulatedIntensity = intensity * (0.7 + waveAmplitude * wave);

int red = 255 * modulatedIntensity;

int green = 255 * modulatedIntensity * (0.6 - 0.1 * depth/3.0);

int blue = 0;

WS2812b.setPixelColor(y * WS2812b_WIDTH + x, red, green, blue);

}

else {

int red = 255 * intensity;

int green = 255 * intensity * 0.8;

int blue = 0;

WS2812b.setPixelColor(y * WS2812b_WIDTH + x, red, green, blue);

}}}

WS2812b.show();

}

void loop() {

drawSunEffect();

delay(20);

}