1. はじめに
The DFROBOT Romeo is an all-in-one robot control board specifically designed for robotics applications. Leveraging the open-source Arduino platform, it offers extensive compatibility with thousands of existing Arduino codes and can be easily expanded with various Arduino shields. This board integrates a 2-way DC motor driver and wireless sockets, enabling immediate initiation of robot projects without the need for additional motor driver components. Furthermore, the Romeo board provides extra power capabilities for servos that require higher current.
This manual provides essential information for setting up, operating, and maintaining your DFROBOT Romeo DFR0004 board.

図1:以上view of the DFROBOT Romeo DFR0004 Robot Control Board.
2. 主な特徴
- プロセッサ: Atmega328
- ブートローダー: アルドゥイーノ
- 電源: USB or External 7V-12V DC
- DC出力: 5V / 3.3V DC and External Power
- モータードライバー: Two-way, 2A Max Current
- アナログI/O: 8 Channels, 10-bit
- 繋がり: USB
- 入力: 5つのキー
- 電源入力: Auto Sensing/Switching
- プログラミング: ICSP Header for Direct Download
- インタフェース: Serial, TTL Level
- Pin Header Support: 男性と女性
- Module Sockets: Integrated for APC220 RF and DF-Bluetooth
- I2Cインターフェース: Three Pin Sets (two 90-degree headers)
- Arduino Uno Pin Mapping Compatibility: Ensures broad compatibility with existing Arduino projects.
3.セットアップガイド
3.1 ボードへの電源供給
The Romeo board can be powered via its USB connection or an external DC power supply. For external power, connect a 7V-12V DC source to the designated power input jack. The board features auto-sensing/switching for power input.
3.2 USB接続
Connect the Romeo board to your computer using a standard USB cable. This connection provides power and enables programming and serial communication.

Figure 2: USB port and external power input on the Romeo board.
3.3 ドライバのインストール
For initial setup, ensure your computer has the necessary Arduino IDE and drivers installed. The Romeo board uses the Arduino Uno bootloader, so standard Arduino Uno drivers are compatible. Refer to the official Arduino website for detailed driver installation instructions for your operating system (Windows, Linux, macOS).
4. 操作手順
4.1 Programming the Board
The Romeo board can be programmed using the Arduino IDE. Connect the board via USB, select "Arduino Uno" as the board type in the IDE, and choose the correct serial port. You can upload sketches directly through the USB connection. An ICSP header is also available for direct firmware download.
4.2 モータ制御
The integrated two-way DC motor driver supports a maximum current of 2A. Connect your DC motors to the designated motor driver terminals. Refer to the board's pinout diagram for specific motor control pins. Standard Arduino motor control libraries can be used to operate connected motors.
4.3無線通信
The Romeo board includes integrated module sockets for APC220 RF and DF-Bluetooth modules. These sockets simplify the connection of wireless communication modules, allowing for remote control or data transmission in your robotics projects. Ensure proper module installation and configuration according to the module's specific documentation.

図 3: 拡大図 view of the Romeo board's components, including the Atmega328 processor and various headers.
5. 仕様
| 特徴 | 詳細 |
|---|---|
| ブランド | DFロボット |
| モデル番号 | DFR452 |
| プロセッサ | Atmega328 |
| ブートローダー | アルドゥイーノ |
| 電源 | USB or External 7V-12V DC |
| DC出力 | 5V/3.3V DC |
| モータードライバー | Two-way, 2A Max Current |
| アナログI / O | 8 Channels, 10-bit |
| 繋がり | USB |
| 入力 | 5つのキー |
| プログラミング | ICSP Header for Direct Download |
| インタフェース | Serial, TTL Level |
| ワイヤレスタイプ | Bluetooth (with compatible module) |
| オペレーティングシステムの互換性 | Windows、Linux、macOS |
| アイテム重量 | 2.12オンス |
| 製品寸法(長さx幅x高さ) | 6.3 x 0.67 x 4.72インチ |

図4: トップダウン view of the Romeo board with dimensions in centimeters.
6. メンテナンス
To ensure the longevity and optimal performance of your DFROBOT Romeo board, follow these maintenance guidelines:
- 清潔に保ちます: Regularly clean the board with a soft, dry brush to remove dust and debris. Avoid using liquids or abrasive cleaners.
- 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。
- 適切な保管: 使用していないときは、ボードを乾燥した静電気防止の環境に保管してください。
- Power Off Before Connecting/Disconnecting: Always disconnect power before making or changing any electrical connections to prevent short circuits or damage.
7。 トラブルシューティング
If you encounter issues with your DFROBOT Romeo board, consider the following troubleshooting steps:
- 電源なし:
- Verify that the USB cable is securely connected to both the board and your computer.
- If using external power, ensure the DC adapter is providing the correct voltage (7V-12V) and is properly connected.
- Check for any visible damage to the power input jack or USB port.
- プログラミングエラー:
- Ensure "Arduino Uno" is selected as the board in the Arduino IDE.
- Confirm that the correct serial port is selected in the Arduino IDE.
- Check your code for syntax errors or logical issues.
- Try a simple "Blink" sketch to verify basic functionality.
- モータードライバーの問題:
- Ensure motors are correctly wired to the motor driver terminals.
- Verify that the motor power supply is adequate and connected.
- Check if the motor control pins in your code match the physical connections.
- Wireless Module Connection Problems:
- Ensure the APC220 RF or DF-Bluetooth module is correctly seated in its socket.
- Verify that the module is powered and configured according to its specific documentation.
- 他のワイヤレス デバイスからの干渉がないか確認してください。
For further assistance, refer to the DFROBOT official webサイトまたはコミュニティ フォーラム。
8. 保証とサポート
Information regarding specific warranty terms and conditions for the DFROBOT Romeo DFR0004 Robot Control Board is not available in this manual. Please refer to the product packaging, the official DFROBOT website, or contact your retailer for detailed warranty information and customer support options.