node-red-contrib-boolean-logic-ultimate/boolean-logic-ultimate/DebouncerUltimate.html

A set of Node-RED enhanced boolean logic and utility nodes, flow interruption, blinker, debouncer, invert, filter, toggle etc.., with persistent values after reboot. Compatible also with Homeassistant values.

<script type="text/javascript">
  RED.nodes.registerType('DebouncerUltimate', {
    category: 'Boolean Logic Ultimate',
    color: '#ff8080',
    defaults: {
      name: { value: '' },
      wait: { value: 500, validate: RED.validators.number() },
      emitOn: { value: 'trailing' },
      controlTopic: { value: 'debouncer' }
    },
    inputs: 1,
    outputs: 1,
    outputLabels: ['Forward'],
    icon: 'file-in.png',
    label: function () {
      return this.name || 'Debouncer';
    },
    paletteLabel: function () {
      return 'Debouncer';
    }
  });
</script>

<script type="text/html" data-template-name="DebouncerUltimate">
  <div class="form-row">
    <b>Debouncer Ultimate</b>
    &nbsp;&nbsp;<span style="color:red"><i class="fa fa-youtube-play"></i>&nbsp;<a target="_blank" href="https://youtu.be/t45kaMQzm5Q"><u>Youtube Video</u></a></span>
  </div>

  <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>

  <div class="form-row">
    <label for="node-input-wait"><i class="fa fa-hourglass-o"></i> Wait (ms)</label>
    <input type="number" id="node-input-wait" min="0">
  </div>

  <div class="form-row">
    <label for="node-input-emitOn"><i class="fa fa-exchange"></i> Emit</label>
    <select id="node-input-emitOn">
      <option value="leading">Send first message immediately</option>
      <option value="trailing">Send only the last message after the pause</option>
      <option value="both">Send first immediately and last after the pause</option>
    </select>
  </div>

  <div class="form-row">
    <label for="node-input-controlTopic"><i class="fa fa-tag"></i> Control topic</label>
    <input type="text" id="node-input-controlTopic">
  </div>
</script>

<script type="text/markdown" data-help-name="DebouncerUltimate">
<p>Dedicated debounce node to suppress rapid bursts and forward only the first, last or both messages of a quiet-time window.</p>

<p><img src="/resources/node-red-contrib-boolean-logic-ultimate/img/debouncer.png" alt="Debouncer example" style="max-width:100%; border-radius:6px;" /></p>

|Property|Description|
|--|--|
| Wait (ms) | Quiet time before the debounce window closes. |
| Emit | Choose whether to send the first message immediately, only the last one after the pause, or both. |
| Control topic | Topic used for runtime commands (default `debouncer`). |

Output:

- Output 1 forwards the debounced message.

Control topic messages:

- `msg.reset = true` clears the timer and pending message.
- `msg.flush = true` emits the pending message immediately.
- `msg.wait` updates the debounce time.
- `msg.emitOn = 'leading'|'trailing'|'both'` changes the emission mode.
</script>