YELUFT USB to TTL Adapter FT232R FT232RL User Manual

導入

This manual provides detailed instructions for the YELUFT USB to TTL Adapter FT232R FT232RL. This device facilitates communication between a computer's USB port and a device requiring TTL serial communication. It features an original FTDI FT232RL chip, ensuring reliable performance across various operating systems. The adapter supports adjustable TTL levels (5V/3.3V) and is powered directly via USB.

Figure 1: YELUFT USB to TTL Adapter, showing the USB connector and pin headers.

製品の特徴

• FTDI FT232RL Chip: Utilizes the genuine FTDI FT232RL chip for stable and efficient USB to serial communication.
• Adjustable TTL Levels: Supports both 5V and 3.3V TTL logic levels, selectable via a switch.
• USB電源: Draws power directly from the USB port, eliminating the need for an external power supply.
• 複数の電源モード: Supports 5V external power, 3.3V external power, or external power supply (3.3V-5V).
• LEDインジケーター: Equipped with TXD (Transmit), RXD (Receive), and Power LEDs for status monitoring.
• Bent Pin Headers: VCC, GND, TXD, RXD, RTS, CTS pins are conveniently led out with bent pin headers. Additional common pin pads are reserved for flexibility.
• 幅広いシステム互換性: Compatible with Windows 10, 8, 7, XP, Vista, Windows CE, Mac OS-X, Linux, and Android operating systems.
• コンパクトなデザイン: Small form factor for easy integration and portability.

図 2: 拡大図 view of the adapter, showing the 3.3V/5V switch and gold-plated pins.

設定

1. ドライバーのインストール:

   For most modern operating systems (Windows 10, Mac OS-X, Linux), drivers for the FTDI FT232RL chip are often installed automatically upon connecting the device. If automatic installation fails, or for older operating systems, download the appropriate VCP (Virtual COM Port) drivers from the official FTDI web地点 （ftdichip.com/drivers/vcp-drivers/). Follow the installation instructions provided by FTDI.

2. コンピュータに接続します:

   Plug the USB end of the adapter into an available USB port on your computer. The Power LED on the adapter should illuminate, indicating it is receiving power.
3. Select TTL Voltageレベル：

   Locate the 3.3V/5V switch on the adapter. Set the switch to the desired voltage level (3.3V or 5V) to match the logic level of the device you intend to connect. Ensure this is set correctly before connecting to your target device to prevent damage.

   

   図3: 前面と背面 views of the adapter, showing the voltage selection switch on the front.

4. COM ポートを識別します:

   After driver installation, the adapter will appear as a Virtual COM Port (VCP) in your computer's Device Manager (Windows) or equivalent system information utility (Mac/Linux). Note the assigned COM port number for use with serial communication software.

操作手順

The YELUFT USB to TTL Adapter is designed for various serial communication tasks. Below are general guidelines for its operation.

1. ピン接続:

   Connect the adapter's pins to your target device according to the following standard:

   • TXD (Transmit Data): Connect to the RXD (Receive Data) pin of your target device.
   • RXD (Receive Data): Connect to the TXD (Transmit Data) pin of your target device.
   • GND (グランド): Connect to the GND (Ground) pin of your target device.
   • VCC（ボリュームtage 共通コレクター): Provides the selected 3.3V or 5V power output. Connect to the VCC/power input of your target device if it requires power from the adapter. Caution: Ensure the voltage matches your device's requirements.
   • RTS (Request To Send) / CTS (Clear To Send): These are hardware flow control pins. Use them if your application requires hardware flow control; otherwise, they can be left unconnected.
   

   Figure 4: Signal descriptions for the adapter's pin headers.

2. Serial Communication Software:

   Use a serial terminal program (e.g., PuTTY, Tera Term, Arduino IDE Serial Monitor, minicom on Linux) to communicate with your device. Configure the software with the correct COM port, baud rate, data bits, parity, and stop bits as required by your target device.
3. LEDインジケーター:
   • 電源LED: Illuminates when the adapter is connected to a USB port and receiving power.
   • TXD LED: Flashes when data is being transmitted from the computer via the adapter.
   • RXD LED: Flashes when data is being received by the computer via the adapter.

4. 代表的な用途:

   このアダプタは次の用途に適しています:

   • USB-to-serial (RS232/RS422/RS485) conversion (with external level shifters if needed).
   • EEPROM programming.
   • Vendor ID customization.
   • Router/Mprog3.5 recovery.
   • GPS module interfacing.
   • Firmware updates for various devices (e.g., hard drives, transmitters).
   • Set-top box communication.
   • Microcontroller programming (Arduino, ESP32, etc.).
   

   図5：例amples of multi-function applications for the adapter.

メンテナンス

• ストレージ： Store the adapter in a dry, cool environment, away from direct sunlight and extreme temperatures.
• クリーニング： アダプターの清掃には、柔らかく乾いた布をご使用ください。液体クリーナーや溶剤の使用は避けてください。
• 取り扱い： Handle the adapter by its edges to avoid touching the electronic components. Do not bend or apply excessive force to the pins or the USB connector.
• ケーブル管理 Ensure connected cables are not under tension to prevent damage to the adapter's pins or the USB port.

トラブルシューティング

• アダプタが認識されません:

  Ensure the adapter is fully plugged into the USB port. Check Device Manager (Windows) or system information for the presence of the FTDI device. If not found, reinstall the FTDI VCP drivers manually from the official FTDI webサイト。

• データの送受信なし（TXD/RXD LED が点滅しない）:
  • Verify pin connections: TXD to RXD, RXD to TXD, and GND to GND.
  • シリアル通信ソフトウェアで正しい COM ポートが選択されていることを確認します。
  • Check that the baud rate, data bits, parity, and stop bits settings in your software match those of your target device.
  • 対象デバイスの電源がオンになっていて、正しく機能していることを確認します。

• Device Not Responding / Damage:
  • Verify the 3.3V/5V switch is set to the correct voltage level for your target device. Supplying incorrect voltage can damage the target device or the adapter.
  • Ensure the VCC pin is only connected if your target device requires power from the adapter and can handle the selected voltage.
  • Avoid short circuits between pins.
• 断続的な接続:

  Try a different USB port on your computer. Ensure all cable connections are secure. Avoid using excessively long or low-quality USB extension cables.

仕様

図6: 製品の寸法。

保証とサポート

For information regarding product warranty, technical support, or customer service, please refer to the documentation included with your purchase or visit the official YELUFT brand store on Amazon: YELUFT Store.

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