{
  "$schema": "https://hyperframes.heygen.com/schema/registry-item.json",
  "name": "oscilloscope-trace",
  "type": "hyperframes:block",
  "title": "Oscilloscope Trace",
  "description": "CRT oscilloscope beam sweeping a waveform across a 10x8 graticule, with closed-form phosphor persistence: the tail decays as exp(-age/tau) and brightens where the beam slows",
  "tags": ["instrument", "data", "showcase", "retro"],
  "dimensions": {
    "width": 1920,
    "height": 1080
  },
  "duration": 6,
  "variables": [
    {
      "id": "waveform",
      "type": "enum",
      "label": "Waveform",
      "default": "sine",
      "options": [
        { "value": "sine", "label": "Sine" },
        { "value": "square", "label": "Square" },
        { "value": "triangle", "label": "Triangle" },
        { "value": "data", "label": "Data series" }
      ]
    },
    {
      "id": "frequency",
      "type": "number",
      "label": "Signal frequency",
      "unit": "Hz",
      "default": 12,
      "min": 0.1,
      "max": 200,
      "step": 0.1
    },
    {
      "id": "amplitude",
      "type": "number",
      "label": "Amplitude",
      "unit": "div",
      "default": 3,
      "min": 0.1,
      "max": 4,
      "step": 0.1
    },
    {
      "id": "persistenceMs",
      "type": "number",
      "label": "Phosphor persistence (tau)",
      "unit": "ms",
      "default": 100,
      "min": 1,
      "max": 1000,
      "step": 1
    },
    {
      "id": "phosphorColor",
      "type": "color",
      "label": "Phosphor colour",
      "default": "#5dff8f"
    },
    {
      "id": "sweepRate",
      "type": "number",
      "label": "Sweep rate",
      "unit": "sweeps/s",
      "default": 5,
      "min": 0.25,
      "max": 60,
      "step": 0.25
    },
    {
      "id": "dataSeries",
      "type": "string",
      "label": "Data series (waveform=data)",
      "default": "",
      "placeholder": "0,0.4,0.9,0.3,-0.6,-1,-0.2,0.5"
    }
  ],
  "files": [
    {
      "path": "oscilloscope-trace.html",
      "target": "compositions/oscilloscope-trace.html",
      "type": "hyperframes:composition"
    }
  ],
  "preview": {
    "video": "https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/oscilloscope-trace.mp4",
    "poster": "https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/oscilloscope-trace.png"
  }
}