1. Product Overview
The BIGTREETECH U2C V2.1 Adapter Board is designed to facilitate CAN-Bus connections, primarily for 3D printer applications. This board expands connectivity options, allowing for multiple CAN-Bus connections simultaneously, enhancing efficiency in complex setups.
Key features include:
- Support for CAN-Bus connection with three dedicated CAN output interfaces.
- TYPE-C interface with ESD protection to safeguard against electrostatic discharge damage.
- Capability for firmware updates of the master controller via SWD or hardware DFU.
- High-quality PCB surface with immersion metal work for enhanced durability and performance.
Figure 1: Overview of the BIGTREETECH U2C V2.1 Adapter Board, showcasing its compact design and various connectors.
2. Setup and Installation
Proper installation is crucial for the stable operation of the U2C V2.1 Adapter Board. Follow these steps for connection:
- Power Connection: Connect the appropriate power supply (12V/24V) to the VCC terminals on the board. Ensure correct polarity.
- CAN-Bus Connections: Utilize the three available CAN output interfaces (CAN_H, CAN_L, GND) to connect your CAN-Bus devices. The board supports multiple connections for expanded functionality.
- USB Type-C Connection: Connect the U2C V2.1 board to your host device (e.g., Raspberry Pi, PC) using a USB Type-C cable. The Type-C interface includes ESD protection to prevent damage from static electricity.
- 120R Resistor Configuration: The board includes onboard 120Ω termination resistors. Refer to your specific CAN-Bus network requirements to determine if these resistors need to be enabled or disabled. Jumpers are typically used for this configuration.
- Firmware Update (Optional): If a firmware update for the master controller is required, it can be performed via the SWD (Serial Wire Debug) interface or through hardware DFU (Device Firmware Upgrade) mode. Consult the specific documentation for your master controller for detailed instructions.
Figure 2: Top view of the U2C V2.1 board, highlighting the USB Type-C port, USB-A port, and various connection headers.
Figure 3: Bottom view of the U2C V2.1 board, illustrating the CAN_H/L pins, VBUS connections, and locations of the 120Ω termination resistors.
3. Operating Instructions
Once the U2C V2.1 Adapter Board is correctly installed and powered, it acts as a bridge for CAN-Bus communication. The primary function is to enable a host device to communicate with multiple CAN-Bus peripherals, such as motor drivers or other control boards in a 3D printer setup.
- Driver Installation: Ensure that the necessary drivers for the U2C V2.1 board are installed on your host operating system. This typically involves USB-to-serial or CAN-Bus drivers.
- Software Configuration: Configure your 3D printer firmware (e.g., Klipper, Marlin) to recognize and utilize the CAN-Bus interface provided by the U2C V2.1 board. This usually involves specifying the correct CAN-Bus baud rate and device addresses.
- CAN-Bus Communication: The board facilitates data transfer between the host and connected CAN-Bus devices. Verify communication using appropriate diagnostic tools or by observing device behavior.
Figure 4: Detailed view of the U2C V2.1 board's electronic components, including the main chip and various connectors.
4. Maintenance
The BIGTREETECH U2C V2.1 Adapter Board is designed for durability and requires minimal maintenance. Adhering to these guidelines will help ensure its longevity:
- Environmental Conditions: Operate the board within recommended temperature and humidity ranges. Avoid exposure to extreme conditions, moisture, or corrosive substances.
- Cleaning: If necessary, gently clean the board with a soft, dry brush or compressed air to remove dust. Do not use liquids or abrasive cleaners.
- Handling: Always handle the board by its edges to avoid touching components, especially when power is applied. Static electricity can damage electronic components, so use anti-static precautions if possible.
- Connection Integrity: Periodically check all cable connections to ensure they are secure and free from damage.
5. Troubleshooting
If you encounter issues with your U2C V2.1 Adapter Board, consider the following troubleshooting steps:
- No Power/LED Indicators Off:
- Verify that the power supply is correctly connected and providing the specified voltage (12V/24V).
- Check the USB Type-C connection to the host device.
- CAN-Bus Communication Failure:
- Ensure all CAN_H and CAN_L connections are correct and secure.
- Verify that the 120Ω termination resistors are configured appropriately for your network.
- Check the CAN-Bus baud rate and device addresses in your software configuration.
- Confirm that the necessary drivers are installed on the host device.
- Host Device Not Recognizing Board:
- Try a different USB Type-C cable and port on your host device.
- Reinstall or update the USB drivers for the board on your host system.
For further assistance, refer to the official BIGTREETECH support resources or community forums.
6. Specifications
| Feature | Detail |
|---|---|
| Model | U2C V2.1 |
| Brand | BIGTREETECH |
| Input Voltage | 5 Volts (DC) via USB, 12V/24V via VCC terminals |
| Output Interfaces | 3 x CAN-Bus (CAN_H, CAN_L, GND) |
| USB Interface | USB Type-C with ESD protection |
| Firmware Update | Supports SWD and hardware DFU |
| PCB Surface Treatment | Immersion Metal Work |
| Dimensions | Approximately 4.61 x 2.95 x 1.34 inches |
| Weight | Approximately 1.76 ounces |
| Material | PCB |
7. Warranty and Support
BIGTREETECH products typically come with a standard manufacturer's warranty covering defects in materials and workmanship. For specific warranty terms and conditions, please refer to the official BIGTREETECH website or contact their customer support.
For technical support, troubleshooting assistance, or to report issues, please visit the official BIGTREETECH support page or community forums. You can often find detailed guides, FAQs, and firmware updates there.
Official BIGTREETECH Store: BIGTREETECH Amazon Store
