# Arduino Sensor Shield(Arduino Sensor Shield 傳感器擴展板)

## 基本資料

- ID: arduino-sensor-shield
- 分類: module/shield(擴展板)

## 規格

- 邏輯電平: 5 V
- 介面: gpio, analog, pwm, i2c, uart
- 供電方式: host-board, vin
- 尺寸: 52 × 56 × 20 mm
- 重量: 23 g

## 針腳

| 名稱 | 類型 | 說明 |
| --- | --- | --- |
| AREF | analog | Analog reference voltage input/output |
| GND | ground |  |
| 13 | bidirectional | Onboard LED |
| 12 | bidirectional |  |
| 11 | bidirectional | PWM |
| 10 | bidirectional | PWM |
| 9 | bidirectional | PWM |
| 8 | bidirectional |  |
| 7 | bidirectional |  |
| 6 | bidirectional | PWM |
| 5 | bidirectional | PWM |
| 4 | bidirectional |  |
| 3 | bidirectional | PWM |
| 2 | bidirectional |  |
| 1 | bidirectional | TX |
| 0 | bidirectional | RX |
| V | power | Positive supply (5V) |
| G | ground |  |
| S | bidirectional | Signal |
| 5V | power |  |
| VCC | power |  |
| Vin | power | External power input |
| 3V3 | power |  |
| RESET | input | Reset signal |
| A0 | analog |  |
| A1 | analog |  |
| A2 | analog |  |
| A3 | analog |  |
| A4 | analog | I2C SDA |
| A5 | analog | I2C SCL |
| SCL | output | I2C clock |
| SDA | bidirectional | I2C data |
| TX | output | UART transmit |
| RX | input | UART receive |
| URF | power | Ultrasonic module power |
| SDI | bidirectional | Ultrasonic module signal |
| COM | bidirectional | General communication/serial interface |
| IIC | bidirectional | I2C interface |
| APC220 | bidirectional | APC220 wireless module interface |
| BLUETOOTH | bidirectional | Bluetooth module interface |
| NC | nc |  |

## 使用注意

- 此擴展板僅為被動接線板，不包含主動晶片，所以 specs 中嘅 chip、i2c_address 等欄位不適用。供電方面，可透過板載 DC 電源座或 Vin 排針輸入 7-12V，亦可由 Arduino 主機板嘅 5V 直接供電；但要注意如果同時從外部電源同 USB 供電，可能會產生電壓衝突。接線陷阱：APC220 同 BLUETOOTH 排針共享部分腳位，使用時要避免同時插上兩個模組；URF 同 SDI 係超聲波模組專用接口，對應嘅觸發同回響腳位要睇清楚，唔好插錯。另外，板上絲印嘅 V/G/S 排列係固定嘅（V 喺上、S 喺下），但唔同廠商嘅感測器線序可能相反，插之前最好用他錶確認一下，避免將電源同地線倒轉而燒毀模組。

## 素材

- pinout: pinout.jpeg(授權 CC-BY-4.0;來源:original)
- photos: photos/01.jpeg, photos/02.jpeg, photos/03.jpeg, photos/04.jpeg, photos/05.jpeg, photos/06.jpeg, photos/07.jpeg, photos/08.jpeg(授權 CC-BY-4.0;來源:original)