{
  "id": "mpr121-touch",
  "name": "MPR121 capacitive touch sensor (12 keys)",
  "category": "input",
  "pins": [
    {
      "name": "VCC",
      "role": "power",
      "notes": "3.3 V (the chip must not get 5 V unless the board has a regulator)"
    },
    {
      "name": "GND",
      "role": "ground"
    },
    {
      "name": "SCL",
      "role": "i2c_scl"
    },
    {
      "name": "SDA",
      "role": "i2c_sda"
    },
    {
      "name": "IRQ",
      "role": "int",
      "notes": "LOW when a touch changes"
    },
    {
      "name": "ADD",
      "role": "passive",
      "notes": "Address: GND 0x5A, VCC 0x5B, SDA 0x5C, SCL 0x5D"
    },
    {
      "name": "E0",
      "role": "passive",
      "notes": "Electrode 0: to a touch pad, foil or fruit"
    },
    {
      "name": "E1",
      "role": "passive"
    },
    {
      "name": "E2",
      "role": "passive"
    },
    {
      "name": "E3",
      "role": "passive"
    },
    {
      "name": "E4",
      "role": "passive"
    },
    {
      "name": "E5",
      "role": "passive"
    },
    {
      "name": "E6",
      "role": "passive"
    },
    {
      "name": "E7",
      "role": "passive"
    },
    {
      "name": "E8",
      "role": "passive"
    },
    {
      "name": "E9",
      "role": "passive"
    },
    {
      "name": "E10",
      "role": "passive"
    },
    {
      "name": "E11",
      "role": "passive"
    }
  ],
  "bus": "i2c",
  "addresses": [
    "0x5A",
    "0x5B",
    "0x5C",
    "0x5D"
  ],
  "voltage": "3.3",
  "pullupsOnBoard": true,
  "model": {
    "shape": "breakout",
    "size": [
      48,
      30,
      1.6
    ],
    "color": "#1F4FA8"
  },
  "keywords": [
    "mpr121",
    "capacitive touch",
    "touch",
    "12 keys",
    "touch keypad",
    "sensore touch",
    "tocco"
  ],
  "sources": [
    {
      "title": "NXP MPR121 datasheet",
      "section": "ADDR pin selects 0x5A to 0x5D; supply 1.71 to 3.6 V"
    },
    {
      "title": "Common MPR121 breakouts",
      "section": "Header order differs (Adafruit, CJMCU, SparkFun): check the silkscreen"
    }
  ]
}