1. Product Overview
The BIGTREETECH CB1 V2.2 is a core control board designed as an alternative to the Raspberry Pi CM4. It features the same BTB header as the Raspberry Pi CM4, allowing for direct integration with compatible carrier boards such as the Pi4B adapter, Manta M4P, Manta M5P, and Manta M8P. When combined with a Pi4B adapter, its performance is comparable to the Raspberry Pi 3B, making it a suitable solution for various embedded applications, including 3D printer control with Klipper or Debian.

Image 1.1: Top view of the BIGTREETECH CB1 V2.2 Core Control Board, showcasing its compact design and main components.
2. Key Features
- Processor: Allwinner H616, Quad-core Cortex-A53 @1.5GHz.
- Graphics: Mali G31 MP2 GPU, supporting OpenGL3.2 and HDMI2.0A for 4K display output.
- Memory: Available with 512MB or 1GB DDR3L SDRAM.
- Connectivity: Integrated 100M Ethernet and 100M WiFi for network access.
- Interfaces: Includes a USB 2.0 port.
- Compatibility: Features the same BTB header as the Raspberry Pi CM4, ensuring broad compatibility with existing carrier boards.
- Operating Systems: Supports Linux and Debian, suitable for Klipper firmware.

Image 2.1: Illustration highlighting the 64-bit quad-core ARM Cortex-A53 processor and 1GB DDR3 RAM of the CB1 V2.2.

Image 2.2: Visual representation of the MaliG31 MP2 GPU, supporting OpenGL3.2 and HDMI 4K UHD output.

Image 2.3: Close-up view of the CB1 V2.2 board, indicating support for 100M Ethernet and 100M WiFi for robust network connectivity.
3. Installation and Compatibility
The CB1 V2.2 board is designed for direct installation onto carrier boards that feature a Raspberry Pi CM4-compatible BTB header. This includes the BIGTREETECH Pi4B adapter, as well as Manta series motherboards such as M4P, M5P, and M8P. Ensure proper alignment and secure connection when installing the CB1 onto the carrier board.

Image 3.1: The CB1 V2.2 board shown installed on a Pi4B adapter (top) and a Raspberry Pi (bottom), demonstrating its versatile compatibility.
4. Operating Environment
The BIGTREETECH CB1 V2.2 is capable of running Linux-based operating systems, including Debian. It is commonly used with Klipper firmware for 3D printer control, offering high speed and stability for programmable applications. Users can customize and develop their own solutions using the board's capabilities.
5. Technical Specifications
| Specification | Detail |
|---|---|
| Product Dimensions | 2.48 x 3.3 x 0.65 inches |
| Item Weight | 1.13 ounces |
| CPU Model | Allwinner H616, Quad-core Cortex-A53 @1.5GHz |
| GPU Model | Mali G31 MP2 |
| RAM Memory Installed Size | 1 GB DDR3L (also available in 512 MB) |
| Network | 100M Ethernet + 100M WiFi |
| Display Output | HDMI2.0A, supports 4K |
| USB Ports | 1x USB 2.0 |
| Model Number | US66-1020000405 |
| Date First Available | November 3, 2022 |

Image 5.1: Size comparison of the BIGTREETECH CB1 V2.2 with a Raspberry Pi CM4, illustrating its compact dimensions (55mm x 40mm).
6. Troubleshooting
If you encounter issues with your BIGTREETECH CB1 V2.2, consider the following steps:
- Power Supply: Ensure the carrier board providing power to the CB1 is receiving adequate and stable power.
- Connections: Verify all connections between the CB1 and the carrier board are secure and correctly aligned.
- Firmware/OS: Confirm that the correct operating system image or Klipper firmware is properly flashed and configured for the CB1. Refer to official BIGTREETECH documentation or community resources for specific flashing instructions.
- Network: If experiencing network issues, check WiFi credentials and Ethernet cable connections. Ensure the network environment is stable.
- Display: If no display output, check HDMI cable connections and ensure the display device is compatible with the CB1's output resolution.
- Software Logs: Access system logs for error messages that can provide clues to the problem.
For persistent issues, consult the BIGTREETECH official support channels or community forums for assistance.
7. Maintenance
To ensure the longevity and optimal performance of your BIGTREETECH CB1 V2.2, follow these general maintenance guidelines:
- Cleanliness: Keep the board free from dust and debris. Use a soft, dry brush or compressed air for cleaning. Avoid liquid cleaners.
- Environment: Operate the board within recommended temperature and humidity ranges. Avoid extreme heat, cold, or moisture.
- Handling: Handle the board by its edges to avoid touching components, especially when power is applied. Static electricity can damage electronic components.
- Firmware Updates: Regularly check for and apply official firmware or operating system updates to benefit from performance improvements and bug fixes.
8. Warranty and Support Information
For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official BIGTREETECH website. In case of technical issues or inquiries not covered in this manual, please contact BIGTREETECH customer support through their official channels. Provide your product model (CB1 V2.2) and any relevant purchase information when seeking support.