#include <ArduinoJson.h>
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>
#include <WiFiUdp.h>
#include <Artnetnode.h>
#include <Ticker.h>
#include "FS.h"
Maybe WiFiManager as that sets up the WiFi connection for me... Will take a look.