@omidteimoori/node-red-data-generator/data-generator.html

A customizable Node-RED node to simulate various data patterns including sinusoidal, random, rising, falling, square, triangle, and sawtooth. Ideal for testing and prototyping dashboards, PLC interfaces, and IoT flows.

<script type="text/javascript">
    RED.nodes.registerType('data-generator', {
        category: 'function',
        color: '#E2D96E',
        defaults: {
            name: { value: "" },
            datatype: { value: "sinusoidal" },
            frequency: { value: 1000 },
            min: { value: 0 },
            max: { value: 100 },
            step: { value: 1 }
        },
        inputs: 0,
        outputs: 1,
        icon: "font-awesome/fa-random",
        label: function () {
            return this.name || `${this.datatype} (${this.frequency}ms)`;
        }
    });
</script>

<script type="text/html" data-template-name="data-generator">
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-datatype"><i class="fa fa-sliders"></i> Type</label>
        <select id="node-input-datatype">
            <option value="sinusoidal">Sinusoidal</option>
            <option value="random">Random</option>
            <option value="rising">Rising</option>
            <option value="falling">Falling</option>
            <option value="square">Square</option>
            <option value="triangle">Triangle</option>
            <option value="exponential">Exponential</option>
            <option value="sine+noise">Sine + Noise</option>
            <option value="stepchange">Step Change</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-frequency"><i class="fa fa-clock-o"></i> Frequency (ms)</label>
        <input type="number" id="node-input-frequency" min="10" step="10">
    </div>
    <div class="form-row">
        <label for="node-input-min"><i class="fa fa-arrow-down"></i> Min</label>
        <input type="number" id="node-input-min">
    </div>
    <div class="form-row">
        <label for="node-input-max"><i class="fa fa-arrow-up"></i> Max</label>
        <input type="number" id="node-input-max">
    </div>
    <div class="form-row">
        <label for="node-input-step"><i class="fa fa-step-forward"></i> Step</label>
        <input type="number" id="node-input-step" min="0.001" step="0.001" oninput="
            const maxVal = parseFloat(document.getElementById('node-input-max').value);
            if (!isNaN(maxVal) && parseFloat(this.value) > maxVal) {
                this.value = maxVal;
            }
        ">
    </div>
</script>

<script type="text/html" data-help-name="data-generator">
    <p>This node generates simulated data automatically after deployment. It supports various waveforms to simulate data such as sinusoidal, random, rising, falling, square, triangle, and sawtooth.</p>
    <ul>
        <li><b>Sinusoidal</b> - Smooth wave oscillating between min and max</li>
        <li><b>Random</b> - Random values between min and max</li>
        <li><b>Rising</b> - Linearly increasing value, resets at max</li>
        <li><b>Falling</b> - Linearly decreasing value, resets at min</li>
        <li><b>Square</b> - Alternates sharply between min and max</li>
        <li><b>Triangle</b> - Increases then decreases linearly between bounds</li>
        <li><b>Exponential</b> - Exponential rise between min and max</li>
        <li><b>Sine + Noise</b> - Sine wave with random fluctuations</li>
        <li><b>Step Change</b> - Sudden jumps from one value to another</li>
    </ul>
    <p style="margin-top: 1em; font-size: 0.85em; color: #777;">
        Developed by <b>Omid Teimoori</b> - <a href="https://omidteimoori.com" target="_blank">omidteimoori.com</a>
    </p>
</script>