{
  "id": "hc-sr04",
  "name": "HC-SR04 ultrasonic distance",
  "category": "sensor",
  "measures": [
    "distance"
  ],
  "pins": [
    {
      "name": "VCC",
      "role": "power",
      "notes": "Needs 5 V: use VIN"
    },
    {
      "name": "TRIG",
      "role": "digital_in",
      "needsOutput": true,
      "notes": "A 10 µs HIGH pulse starts a measurement"
    },
    {
      "name": "ECHO",
      "role": "digital_out",
      "notes": "Outputs 5 V: use a voltage divider (e.g. 1 kΩ + 2 kΩ) before the ESP32 pin"
    },
    {
      "name": "GND",
      "role": "ground"
    }
  ],
  "bus": "gpio",
  "voltage": "5",
  "model": {
    "shape": "module",
    "size": [
      45,
      20,
      15
    ],
    "color": "#1F4FA8"
  },
  "keywords": [
    "hc-sr04",
    "ultrasonic",
    "distance",
    "sonar",
    "ultrasuoni",
    "distanza",
    "sensore distanza"
  ],
  "sources": [
    {
      "title": "Cytron / ElecFreaks HC-SR04 user manual",
      "section": "Pins VCC, Trig, Echo, GND; 10 µs trigger pulse; 5 V supply"
    }
  ]
}