Node REPL for Christmas Lights (usage: .lights 255 255) Note: Lowercase hex is on purpose; light box won't accept it in uppercase.

repl_lights.js

var dgram = require('dgram');
var repl = require('repl');

var lightswitch_socket = dgram.createSocket("udp4");

var replServer = repl.start({
  prompt: 'Lights > '
});

replServer.defineCommand('lights', {
  help: 'Set lights value from ',
  action: function (channels){
    chans = channels.split(' ');
    channel1 = chans[0];
    channel2 = chans[1];

    var value1 = parseInt(channel1);
    var value1_in_hex = value1.toString(16);
    if (value1 <= 16) value1_in_hex = "0" + value1_in_hex;

    var value2 = parseInt(channel2);
    var value2_in_hex = value2.toString(16);
    if (value2 <= 16) value2_in_hex = "0" + value2_in_hex;

    //var buffer = new Buffer("FFFF000000000000\x0d\x0a");
    //var buffer = new Buffer(value1_in_hex+value2_in_hex+"000000000000\x0d\x0a");
    var buffer = new Buffer(value1_in_hex+value2_in_hex+"FFFFFFFFFFFF\x0d\x0a");
    //console.log(value1_in_hex+value2_in_hex+"000000000000");
    //var buffer = new Buffer("FFFFFFFFFFFFFFFF\x0d\x0a");
    lightswitch_socket.send(buffer, 0, 18, 9802, '192.168.10.41');
  }
});

replServer.on('exit', function() {
  process.exit();
});