{
  "id": "hc-12",
  "name": "HC-12 433 MHz serial radio",
  "category": "output",
  "pins": [
    {
      "name": "VCC",
      "role": "power",
      "notes": "3.2 to 5.5 V. Draws about 100 mA when sending at full power"
    },
    {
      "name": "GND",
      "role": "ground"
    },
    {
      "name": "RXD",
      "role": "digital_in",
      "needsOutput": true,
      "notes": "UART: the part receives data here. Connect to an ESP32 TX pin (9600 baud by default)"
    },
    {
      "name": "TXD",
      "role": "digital_out",
      "notes": "UART: the part sends data here. Connect to an ESP32 RX pin"
    },
    {
      "name": "SET",
      "role": "digital_in",
      "needsOutput": true,
      "notes": "LOW = AT command mode. Leave HIGH (internal pull-up) for normal use"
    },
    {
      "name": "ANT",
      "role": "passive",
      "notes": "Antenna: spring antenna or u.FL connector"
    }
  ],
  "bus": "gpio",
  "voltage": "3.3-5",
  "model": {
    "shape": "module",
    "size": [
      27.8,
      14.4,
      4
    ],
    "color": "#1F4FA8"
  },
  "keywords": [
    "hc-12",
    "hc12",
    "433 mhz",
    "si4463",
    "wireless serial",
    "radio",
    "seriale senza fili"
  ],
  "sources": [
    {
      "title": "HC-12 wireless serial port communication module user manual",
      "section": "Pins VCC, GND, RXD, TXD, SET; 433.4 to 473.0 MHz; 9600 baud default; supply 3.2 to 5.5 V"
    }
  ]
}