How can I span multiple universes with one LED strip?

Components & Accessories LEDs
1

https://learn.sparkfun.com/tutorials/sp … led-shield

I’m not able to get my ESP32 to run a strip of 300 LEDs. I know how to set up the output in Resolume, but even when I have it spanning from universe 0-1 or even 0-3, it only recognizes the last one.

#include <WiFi.h>
#include <WiFiUDP.h>
#include <ArtnetWifi.h> //https://github.com/rstephan/ArtnetWifi
#include <FastLED.h>


// WiFi network name and password:
const char * ssid = "redacted";
const char * password = "redacted";

// Internet domain to request from:
const char * hostDomain = "example.com";
const int hostPort = 80;

const int BUTTON_PIN = 0;
const int LED_PIN = LED_BUILTIN;

// Artnet settings
ArtnetWifi artnet;
WiFiUDP UDPSend;
const int startUniverse = 0;
const int endUniverse = 2;//end Universe should be total channels/512

bool sendFrame = 1;
int previousDataLength = 0;

//Pin Definitions for ESP32 WROOM
#define CLOCK 5
#define DATA0 19
#define DATA1 18
#define DATA2 27

//Channel and Peripheral Definitions
#define NUM_LEDS 300
#define NUM_LED_CHANNELS NUM_LEDS * 3
CRGB leds[NUM_LEDS];

uint8_t hue = 0;

// connect to wifi – returns true if successful or false if not
boolean connectWifi(void)
{
  int ledState = 0;
  boolean state = true;
  int i = 0;

  WiFi.begin(ssid, password);
  Serial.println("");

  // Wait for connection
  Serial.println("Connecting to WiFi network: " + String(ssid));
  while (WiFi.status() != WL_CONNECTED) {
    // Blink LED while we're connecting:
    digitalWrite(LED_PIN, ledState);
    ledState = (ledState + 1) % 2; // Flip ledState
    delay(500);
    Serial.print(".");
    if (i > 20){
      state = false;
      break;
    }
    i++;
  }
  if (state){
    Serial.println("");
    Serial.print("Connected to ");
    Serial.println(ssid);
    Serial.print("IP address: ");
    Serial.println(WiFi.localIP());
  } else {
    Serial.println("");
    Serial.println("Connection failed.");
  }

  return state;
}

void onDmxFrame(uint16_t universe, uint16_t length, uint8_t sequence, uint8_t* data)
{
  // read universe and put into the right part of the display buffer
  //DMX data should be sent with the first LED in the string on channel 0 of Universe 0
  for (int channel = 0; channel < length; channel++)
  {
    if (channel < NUM_LED_CHANNELS && channel % 3 == 0) //Only write on every 3rd piece of data so we correctly parse things into our RGB array
    {
      leds[channel / 3] = CRGB(data[channel], data[channel + 1], data[channel + 2]);
    }
  }
  previousDataLength = length;
  if (universe == endUniverse) //Display our data if we have received all of our universes, prevents incomplete frames when more universes are concerned.
  {
    FastLED.show();
	UDPSend.flush();
  }
}

void setup()
{
  Serial.begin(115200);
  //Fixture Hardware Declarations
  FastLED.addLeds<WS2813 , DATA0, RGB>(leds, NUM_LEDS);

  if (connectWifi())
  {
    Serial.println("Connected to WiFi network: " + String(ssid));
  }
  artnet.begin();
  artnet.setArtDmxCallback(onDmxFrame);
}

void loop()
{
  artnet.read();
}
2

Hi, how have you connected the LEDs with your esp32?