Node-REDのNode作成はじめの1歩 ref: http://qiita.com/joeartsea/items/11cef78442c3e7154a07

file2.txt

{ init: [Function],
  start: [Function: start],
  stop: [Function: stop],
  nodes: 
   { init: [Function: init],
     load: [Function: load],
     createNode: [Function: createNode],
     getNode: [Function],
     eachNode: [Function],
     addFile: [Function: addFile],
     addModule: [Function: addModule],
...

file3.txt

module.exports = function(RED) {
  function LowerCaseNode(config) {
    RED.nodes.createNode(this,config);
    console.log(this); // <- 追加
    var node = this;
    this.on('input', function(msg) {
      msg.payload = msg.payload.toLowerCase();
      node.send(msg);
    });
  }
  RED.nodes.registerType("lower-case",LowerCaseNode);
}

file4.txt

{ id: '5c0d29a1.a3f2d8',
  type: 'lower-case',
  z: 'f56b199.f0a94e8',
  _closeCallbacks: [],
  wires: [ [ '17d78d74.e82873' ] ],
  _wireCount: 1,
  send: [Function],
  _wire: '17d78d74.e82873' }
{ id: '112248a6.eeddb7',
  type: 'lower-case',
  z: 'f56b199.f0a94e8',
  _closeCallbacks: [],
  wires: [ [ 'b308844.f4cf778' ] ],
  _wireCount: 1,
  send: [Function],
  _wire: 'b308844.f4cf778' }
{ id: 'f8fc3c36.0703c',
  type: 'lower-case',
  z: 'f56b199.f0a94e8',
  _closeCallbacks: [],
  wires: [ [ 'b2266937.4dd998' ] ],
  _wireCount: 1,
  send: [Function],
  _wire: 'b2266937.4dd998' }

file6.txt

module.exports = function(RED) {
  function LowerCaseNode(config) {
    RED.nodes.createNode(this,config);
    var node = this;
    this.on('input', function(msg) {
      console.log(this); // <- 追加
      msg.payload = msg.payload.toLowerCase();
      node.send(msg);
    });
  }
  RED.nodes.registerType("lower-case",LowerCaseNode);
}

file7.txt

{ id: '5c0d29a1.a3f2d8',
  type: 'lower-case',
  z: 'f56b199.f0a94e8',
  _closeCallbacks: [],
  wires: [ [ '17d78d74.e82873' ] ],
  _wireCount: 1,
  send: [Function],
  _wire: '17d78d74.e82873',
  _events: { input: [Function] } }

flows_hostname.local

{"id":"1fce0738.e031f9","type":"inject","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"x":112,"y":65,"z":"f56b199.f0a94e8","wires":[["5c0d29a1.a3f2d8"]]},
{"id":"5c0d29a1.a3f2d8","type":"lower-case","name":"","x":274,"y":71,"z":"f56b199.f0a94e8","wires":[["17d78d74.e82873"]]},
{"id":"17d78d74.e82873","type":"debug","name":"","active":true,"console":"false","complete":"false","x":489,"y":74,"z":"f56b199.f0a94e8","wires":[]},
{"id":"af2b7be1.50d488","type":"inject","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"x":119,"y":132,"z":"f56b199.f0a94e8","wires":[["112248a6.eeddb7"]]},
{"id":"112248a6.eeddb7","type":"lower-case","name":"","x":281,"y":138,"z":"f56b199.f0a94e8","wires":[["b308844.f4cf778"]]},
{"id":"b308844.f4cf778","type":"debug","name":"","active":true,"console":"false","complete":"false","x":496,"y":141,"z":"f56b199.f0a94e8","wires":[]},
{"id":"f452540.f0badb","type":"inject","name":"","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"x":113,"y":203,"z":"f56b199.f0a94e8","wires":[["f8fc3c36.0703c"]]},
{"id":"f8fc3c36.0703c","type":"lower-case","name":"","x":275,"y":209,"z":"f56b199.f0a94e8","wires":[["b2266937.4dd998"]]},
{"id":"b2266937.4dd998","type":"debug","name":"","active":true,"console":"false","complete":"false","x":490,"y":212,"z":"f56b199.f0a94e8","wires":[]}

lower-case.html

<script type="text/javascript">
    RED.nodes.registerType('lower-case',{
        category: 'function',
        color: '#a6bbcf',
        defaults: {
            name: {value:""}
        },
        inputs:1,
        outputs:1,
        icon: "file.png",
        label: function() {
            return this.name||"lower-case";
        }
    });
</script>

<script type="text/x-red" data-template-name="lower-case">
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
</script>

<script type="text/x-red" data-help-name="lower-case">
    <p>A simple node that converts the message payloads into all lower-case characters</p>
</script>

lower-case.js

module.exports = function(RED) {
  function LowerCaseNode(config) {
    console.log(RED); // <- 追加
    RED.nodes.createNode(this,config);
    var node = this;
    this.on('input', function(msg) {
      msg.payload = msg.payload.toLowerCase();
      node.send(msg);
    });
  }
  RED.nodes.registerType("lower-case",LowerCaseNode);
}