QLC Artnet Tester

qlc_artnet_test.mjs

/**
 * Setup: yarn add artnet-protocol
 * Make sure no other Artnet programs are running on your machine, check this with sudo lsof -i udp:6454 nothing should show
 *
 * QLC+: Enable ArtNet input on 127.0.0.1
 * Create a slider in virtual console
 * Hit auto detect
 * Run this script, it should auto populate input universe and channel
 * Now hit the Play icon in top right of QLC+
 * Run this script and each run should move the slider to a new location
 *
 * Pro tip: Try using https://www.wireshark.org/ to monitor the local lo0 loopback address to see the packets.
 * Filter to artnet.
 */

import dgram from "dgram";
import { protocol } from 'artnet-protocol';

const socket = dgram.createSocket({ type: 'udp4', reuseAddr: true });
const packet = new protocol.ArtDmx(0, 0, 0, [Math.round(Math.random() * 255)]);

const buffer = packet.encode();
socket.send(buffer, 0, buffer.length, 6454, '127.0.0.1');

console.log(`Sent ${packet.data[0]}`);
setTimeout(() => socket.close(), 100);