{
  "id": "arduino-uno-r3-clone-micro-usb",
  "name": "Arduino Uno R3 Clone Micro Usb",
  "name_zh": "Arduino Uno R3 (Micro USB)",
  "mpn": "Arduino Uno R3",
  "category": "board/arduino",
  "summary_zh": "Arduino Uno是一塊微控制器板(microcontroller board)，大約一個手掌大，在Arduino家族當中，是最廣泛運用的控制板，在義大利文中，Uno就是1的意思，代表Arduino的一個新開始。\n而BotSheet售賣的Arduino Uno是R3版本，是Arduino Uno的第三代版本，記憶體晶片由R2的MEGA8U2改為MEGA16U2，擁有16KB快閃記憶體、512Bytes主記憶體與EEPROM，比R2版本多出一倍，以及加入了ICSP接腳，用於燒錄韌體。",
  "specs": {
    "voltage_v": {
      "typ": 5
    },
    "dimensions_mm": {
      "l": 68.7,
      "w": 53.3,
      "h": 15.5
    },
    "weight_g": 28,
    "usb_port": [
      "micro-usb"
    ]
  },
  "pins": [
    {
      "name": "IOREF",
      "type": "output",
      "description": "I/O reference voltage, indicates logic voltage level"
    },
    {
      "name": "RESET",
      "type": "input",
      "description": "Active-low reset, pulling low restarts MCU"
    },
    {
      "name": "3V3",
      "type": "power"
    },
    {
      "name": "5V",
      "type": "power"
    },
    {
      "name": "GND",
      "type": "ground"
    },
    {
      "name": "VIN",
      "type": "power",
      "description": "External supply input, accepts 6-20V DC"
    },
    {
      "name": "A0",
      "type": "analog",
      "description": "Also usable as digital GPIO"
    },
    {
      "name": "A1",
      "type": "analog",
      "description": "Also usable as digital GPIO"
    },
    {
      "name": "A2",
      "type": "analog",
      "description": "Also usable as digital GPIO"
    },
    {
      "name": "A3",
      "type": "analog",
      "description": "Also usable as digital GPIO"
    },
    {
      "name": "A4",
      "type": "analog",
      "description": "Also usable as I2C SDA"
    },
    {
      "name": "A5",
      "type": "analog",
      "description": "Also usable as I2C SCL"
    },
    {
      "name": "D0/RX",
      "type": "bidirectional",
      "description": "UART RX"
    },
    {
      "name": "D1/TX",
      "type": "bidirectional",
      "description": "UART TX"
    },
    {
      "name": "D2",
      "type": "bidirectional",
      "description": "Supports external interrupt"
    },
    {
      "name": "D3",
      "type": "bidirectional",
      "description": "Supports external interrupt and PWM"
    },
    {
      "name": "D4",
      "type": "bidirectional"
    },
    {
      "name": "D5",
      "type": "bidirectional",
      "description": "Supports PWM"
    },
    {
      "name": "D6",
      "type": "bidirectional",
      "description": "Supports PWM"
    },
    {
      "name": "D7",
      "type": "bidirectional"
    },
    {
      "name": "D8",
      "type": "bidirectional"
    },
    {
      "name": "D9",
      "type": "bidirectional",
      "description": "Supports PWM"
    },
    {
      "name": "D10/SS",
      "type": "bidirectional",
      "description": "Supports PWM and SPI slave select"
    },
    {
      "name": "D11/MOSI",
      "type": "bidirectional",
      "description": "Supports PWM and SPI MOSI"
    },
    {
      "name": "D12/MISO",
      "type": "bidirectional",
      "description": "SPI MISO"
    },
    {
      "name": "D13/SCK",
      "type": "bidirectional",
      "description": "Supports SPI SCK and built-in LED"
    },
    {
      "name": "AREF",
      "type": "input",
      "description": "Analog reference voltage input"
    },
    {
      "name": "SDA",
      "type": "bidirectional",
      "description": "I2C data"
    },
    {
      "name": "SCL",
      "type": "bidirectional",
      "description": "I2C clock"
    },
    {
      "name": "NC",
      "type": "nc",
      "description": "Not connected"
    }
  ],
  "attributes": {
    "輸入電壓": "6-20V (建議在7-12V內)",
    "連接": "Micro USB",
    "支援三種供電方式": "USB，VIN，外部5V輸入"
  },
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      "license": "CC-BY-4.0",
      "source": "original"
    },
    "dimensions": {
      "files": [
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    "pinout": {
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      "license": "CC-BY-4.0",
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  "product_id": "52484",
  "updated_at": "2026-09-12"
}