1. はじめにview
The GODIYMODULES Mini USB Host Shield 2.0 is designed to enable Arduino (specifically Arduino Pro Mini 3.3V/8MHz/328) to function as a USB host. This capability allows the Arduino to communicate with various USB slave devices such as USB keyboards, mice, USB flash drives, and cameras. It also supports implementation of Google ADK (Android Open Accessory Development Kit) for interaction with Android system mobile phones.
This shield utilizes an SPI interface for communication with the microcontroller and supports USB hub functionality. It operates at a voltag3.3VDCのe。
2. 主な特徴
- Enables USB host functionality for Arduino Pro Mini (3.3V/8MHz/328).
- Compatible with USB slave devices including keyboards, mice, USB flash drives, and cameras.
- Supports Google ADK for Android mobile phone communication.
- Utilizes SPI interface for microcontroller communication.
- Supports USB hub functionality.
- Compact size: 38mm * 18mm.
- 営業巻tage：3.3VDC。
3. セットアップと接続
This Mini USB Host Shield 2.0 is designed for use with Arduino Pro Mini (3.3V/8MHz/328) and 3.3V FTDI adapters. Ensure your Arduino board operates at 3.3V to prevent damage.
The shield connects to the Arduino via the SPI interface. Refer to the schematic diagram below for detailed pin connections and component layout.
Figure 3.1: Schematic diagram of the Mini USB Host Shield 2.0, showing power regulation, USB interface, and SPI connections.
主要な接続ポイント:
- VCCC: いいえ Connect to 3.3V power supply from your Arduino.
- GND： グランドに接続します。
- SPI Pins: MOSI, MISO, SCK, SS (Slave Select), INT (Interrupt), GPX (General Purpose I/O). These pins should be connected to the corresponding SPI pins on your Arduino Pro Mini.
- USBポート: Standard USB Type-A female connector for connecting USB slave devices.
Ensure all connections are secure before applying power. Incorrect voltage or wiring can damage the shield or your Arduino board.
4. 操作手順
Once the Mini USB Host Shield 2.0 is correctly connected to your Arduino Pro Mini, you can begin programming your Arduino to interact with USB devices.
図4.1：上 view of the Mini USB Host Shield 2.0, showing the USB Type-A port, MAX3421EE chip, and pin headers.
図4.2：下 view of the Mini USB Host Shield 2.0, showing additional pin labels and solder points.
Programming for USB Host Functionality:
- Install USB Host Library: Download and install the necessary USB Host Shield 2.0 library for Arduino IDE. This library provides functions to interact with various USB devices.
- USBデバイスを接続: Plug your desired USB slave device (e.g., keyboard, mouse, flash drive) into the USB Type-A port on the shield.
- スケッチをアップロード: Write and upload an Arduino sketch that utilizes the USB Host library to detect and communicate with the connected device. Examples for common devices are usually included with the library.
Google ADK Implementation:
For Google ADK applications, the product provides compiled APK installation packages and ADK source files. These resources are compatible with the shield and can be used to develop Android applications that interact with your Arduino project via the USB Host Shield.
5. 仕様
| パラメータ | 価値 |
|---|---|
| ブランド | GODIYモジュール |
| モデル名 | Mini USB Host Shield 2.0 |
| 接続技術 | USB |
| 含まれるコンポーネント | 1pcs Mini USB Host Shield |
| オペレーティングシステムの互換性 | Android (for ADK) |
| 対応デバイス | USB keyboard, mouse, USB disk, Camera, Android system mobile phone |
| Processor Brand (Controller) | Atmel (referring to compatible Arduino) |
| 製品寸法 | 38mm×18mm |
| 正味重量 | 4.5グラム |
| 営業巻tage | DC3.3V |
6。 トラブルシューティング
- 互換性の問題: This shield is primarily designed for Arduino Pro Mini (3.3V/8MHz/328). While it may work with Arduino Uno with appropriate level shifters, it is generally not compatible with Arduino Mega 2560 without significant modifications and advanced knowledge. Ensure your Arduino board operates at 3.3V or use proper voltage level conversion.
- Unclear Pin Labels: If the silk screening on the board for pin identification is unclear, refer to the provided schematic diagram (Figure 3.1) for accurate pin assignments and connections.
- デバイスが検出されません:
- Verify all connections between the shield and Arduino are correct and secure.
- Ensure the USB Host library is correctly installed and the sketch is properly configured for the specific USB device.
- Check the power supply to the shield and Arduino. Insufficient power can prevent USB devices from functioning.
- Test with a different USB device to rule out issues with the device itself.
7. メンテナンス
To ensure the longevity and proper functioning of your Mini USB Host Shield 2.0, follow these general maintenance guidelines:
- 取り扱いにはご注意ください: 電子部品は敏感です。基板を落としたり、過度の力を加えたりしないでください。
- 乾燥を保つ: Protect the board from moisture and liquids, which can cause short circuits and corrosion.
- 清潔さ: ボードに埃やゴミが付かないようにしてください。必要に応じて、柔らかく乾いたブラシまたは圧縮空気を使用して清掃してください。
- 適切な保管: When not in use, store the shield in an anti-static bag to protect it from electrostatic discharge.
8. 保証とサポート
This GODIYMODULES Mini USB Host Shield 2.0 comes with a 2年間のメーカー保証この保証は、通常の使用における材料および製造上の欠陥をカバーします。
For technical support, inquiries, or warranty claims, please contact GODIYMODULES directly through their official channels or the retailer from whom the product was purchased. Please provide your purchase details and a clear description of the issue when seeking support.