{
  "id": "yf-s401",
  "name": "YF-S401 small water flow sensor",
  "category": "sensor",
  "measures": [
    "flow"
  ],
  "pins": [
    {
      "name": "VCC",
      "role": "power",
      "notes": "Red wire. Needs 5 V: use VIN"
    },
    {
      "name": "GND",
      "role": "ground",
      "notes": "Black wire"
    },
    {
      "name": "SIG",
      "role": "digital_out",
      "notes": "Yellow wire. Pulses at the supply level: use a voltage divider. About 98 pulses per second per L/min"
    }
  ],
  "bus": "gpio",
  "voltage": "5",
  "model": {
    "shape": "module",
    "size": [
      40,
      20,
      20
    ],
    "color": "#1A1A1A"
  },
  "keywords": [
    "yf-s401",
    "water flow",
    "flow meter",
    "hall",
    "flussometro",
    "portata",
    "acqua"
  ],
  "sources": [
    {
      "title": "YF-S401 seller datasheet",
      "section": "Supply 5 to 24 V; range 0.3 to 6 L/min; about 5880 pulses per litre. Calibrate with a known volume"
    }
  ]
}