LED Matrix glitchy pixels and it stays on after unplugging

[swarkin]

The video is showing the glitchy pixels at the end and the fact that the LED matrix stays on after turning off the PSU.

Last blocks of pixels and last few individual LEDs are weird

Last few LEDs are yellow / dimmed even though the PSU can deliver several times more amps than the Matrix is pulling and the brightness is at like 5%

PSU is off but matrix isnt, it continues to play animations with only red color until i unplug the ESP32

Here is the code with comments removed

#include <Arduino.h>

#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
#include <FastLED.h>

#define PANEL_RES_X 64
#define PANEL_RES_Y 64
#define PANEL_CHAIN 1

MatrixPanel_I2S_DMA *dma_display = nullptr;

uint16_t time_counter = 0, cycles = 0, fps = 0;
unsigned long fps_timer;

CRGB currentColor;
CRGBPalette16 palettes[] = {HeatColors_p, LavaColors_p, RainbowColors_p, RainbowStripeColors_p, CloudColors_p};
CRGBPalette16 currentPalette = palettes[0];

void setup() {
	Serial.begin(115200);
	Serial.println(F("ESP32-HUB75-MatrixPanel-I2S-DMA DEMO"));

	HUB75_I2S_CFG mxconfig(
		PANEL_RES_X,
		PANEL_RES_Y,
		PANEL_CHAIN
	);

	mxconfig.gpio.e = 18;

	dma_display = new MatrixPanel_I2S_DMA(mxconfig);
	dma_display->setBrightness8(10);

	if (!dma_display->begin())
	Serial.println("I2S memory allocation failed");

	Serial.println("Fill screen: RED");
	dma_display->fillScreenRGB888(255, 0, 0);
	delay(1000);

	Serial.println("Fill screen: GREEN");
	dma_display->fillScreenRGB888(0, 255, 0);
	delay(1000);

	Serial.println("Fill screen: BLUE");
	dma_display->fillScreenRGB888(0, 0, 255);
	delay(1000);

	Serial.println("Fill screen: Neutral White");
	dma_display->fillScreenRGB888(64, 64, 64);
	delay(1000);

	Serial.println("Fill screen: black");
	dma_display->fillScreenRGB888(0, 0, 0);
	delay(1000);

	currentPalette = RainbowColors_p;
	Serial.println("Starting plasma effect...");
	fps_timer = millis();
}

void loop() {
	for (int x = 0; x < PANEL_RES_X; x++) {
			for (int y = 0; y < PANEL_RES_Y; y++) {
				int16_t v = 128;
				uint8_t wibble = sin8(time_counter);
				v += sin16(x * wibble * 3 + time_counter);
				v += cos16(y * (128 - wibble) + time_counter);
				v += sin16(y * x * cos8(-time_counter) / 8);

				currentColor = ColorFromPalette(currentPalette, (v >> 8));
				dma_display->drawPixelRGB888(x, y, currentColor.r, currentColor.g, currentColor.b);
			}
	}

	++time_counter;
	++cycles;
	++fps;

	if (cycles >= 1024) {
		time_counter = 0;
		cycles = 0;
		currentPalette = palettes[random(0,sizeof(palettes)/sizeof(palettes[0]))];
	}

	if (fps_timer + 5000 < millis()){
		Serial.printf_P(PSTR("Effect fps: %d\n"), fps/5);
		fps_timer = millis();
		fps = 0;
	}
}