node-red-contrib-freya-nodes/nodes/temperature-controller/temperature-controller-node.html

Custom nodes for Freya Vivarium Control System

<script type="text/javascript">
  RED.nodes.registerType('temperature controller',{  
    category: 'Freya Vivariums',
    color: "#A2CA6F",
    defaults: {
      name: {value:""},
      minimumTemperature: {value:"25", required:true, validate:RED.validators.number()},
      maximumTemperature: {value:"30", required:true, validate:RED.validators.number()},
      kp: {value:"10", required:false, validate:RED.validators.number()}
    },
    inputs:1,
    outputs:2,
    outputLabels:["control","status"],
    icon: "font-awesome/fa-thermometer-half",
    label: function() {
      return this.name||"Temperature Controller";
    }
  });
</script>

<script type="text/html" data-template-name="temperature controller">
  <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>
  <hr/>
  <h2><i class="fa fa-thermometer-full"></i> Extremes</h2>
  <p>The absolute maximum ratings</p>
  <div class="form-row">
    <label for="node-input-minimumTemperature"><i class="icon-cog"></i> Minimum (°C)</label>
    <input type="number" id="node-input-minimumTemperature" placeholder="25">
  </div>
  <div class="form-row">
    <label for="node-input-maximumTemperature"><i class="icon-cog"></i> Maximum (°C)</label>
    <input type="number" id="node-input-maximumTemperature" placeholder="30">
  </div>
  <hr/>
  <h2><i class="fa fa-sliders"></i> P-controller</h2>
  <div class="form-row">
    <label for="node-input-kp"><i class="icon-cogs"></i> Proportional Gain (Kp)</label>
    <input type="number" id="node-input-kp" placeholder="10">
  </div>
</script>

<script type="text/html" data-help-name="temperature controller">
  <p>The <b>Temperature Controller</b> node implements a proportional (P) controller.</p>
  <p><b>Inputs:</b>
    <ul>
      <li><code>msg.topic == 'temp'</code> (payload: number) &rarr; sensor reading</li>
      <li><code>msg.topic == 'config'</code> (payload: { setpoint, kp }) &rarr; runtime configuration</li>
    </ul>
  </p>
  <p><b>Outputs:</b>
    <ol>
      <li><code>control</code>: <code>msg.payload.effort</code> (-100 to +100)</li>
      <li><code>status</code>: <code>msg.payload</code> object with <code>level</code>, <code>message</code>, and optional <code>details</code></li>
    </ol>
  </p>
  <p>Configure the <i>Setpoint</i> (°C) and <i>Proportional Gain</i> (Kp) in the node's edit dialog.</p>
</script>