BIGTREETECH Octopus Pro V1.1 H723 Control Board Kit User Manual

1. Introduction

The BIGTREETECH Octopus Pro V1.1 is a high-speed, high-voltage 3D printer motherboard designed by Shenzhen Biqu Technology Co., Ltd. It supports up to 8-axis stepper motors with voltages up to 60V. This kit includes the Octopus Pro V1.1 H723 control board, a BTT Pi V1.2 board, two TMC5160T V1.0 stepper drivers, and five TMC2209 V1.3 stepper drivers, providing a comprehensive solution for high-speed 3D printing, especially for Voron printers.

2. Product Features

• High-Speed Printing Kit: Features the ARM Cortex-M7-STM32H723ZET6 series, with a main frequency up to 550 MHz and 512KB flash memory. Compatible with Marlin, Klipper, Raspberry Pi, and Octoprint systems, optimized for Klipper high-speed printing.
• Advanced Cooling and Temperature Sensing: The Octopus Pro V1.1 includes 6 controllable fan ports and 2 uncontrolled ports, with selectable power supply voltage (Vin, 12V, 5V). Onboard Max31864 supports 2/4-wire PT100/PT1000 temperature measurement without soldering. Integrated JST interface supports CANBus functionality.
• BTT Pi V1.2 Core Board: Utilizes an ALLWINNER H616 Quad-core 64-bit processor (Cortex-A53@1.5GHz) with 1GB DDR3L SDRAM. Features an integrated 2.4G WiFi module and supports 100 Mbps wireless network, similar to Raspberry Pi 3B/4B.
• Versatile Display and Connectivity: The BTT Pi V1.2 features a MaliG32 MP2 GPU, supporting OpenGL3.2 and HDMI2.0A UHD 4K Video & Audio, as well as SPI displays (e.g., HDMI5/TFT35 SPI). It includes 4 USB 2.0 ports, a standard 40-pin GPIO header, a 3.5mm audio jack, a TF card slot, and ADXL345 SPI support.
• TMC5160T Stepper Drivers (2 pieces): Adopts the TMC5160T-TA chip with a selectable power supply voltage range of 8V to 36V. Offers a maximum current of 3A and 256 subdivisions. Supports both SPI and SD modes.
• TMC2209 Stepper Drivers (5 pieces): These V1.3 motor drivers come with heatsinks. Featuring StealthChop2 technology, they provide ultra-quiet operation with a continuous current up to 2.0A (2.8A peak). Voltage range is 4.75V to 28V.

3. Components Overview

Image: The BIGTREETECH Octopus Pro V1.1 H723 control board and the BTT Pi V1.2 board, along with stepper drivers.

Image: Close-up of the BIGTREETECH Octopus Pro V1.1 H723 control board, highlighting its various ports and components.

3.1. BIGTREETECH Octopus Pro V1.1 H723 Control Board

This is the main control unit for your 3D printer. It features a powerful ARM Cortex-M7 processor, designed for high-speed and precise control of printer movements. It supports multiple stepper drivers and various peripherals.

Image: Detailed view of the H723 chip on the Octopus Pro board, emphasizing its processing capabilities.

Image: Diagram illustrating the Octopus Pro's support for 8 powerful motor drivers, indicating 60V stability.

3.2. BTT Pi V1.2 Board

The BTT Pi V1.2 acts as a companion board, providing advanced computing capabilities, network connectivity, and display options. It is ideal for running Klipper firmware and managing your 3D printer remotely.

Image: The BTT Pi V1.2 board, showcasing its compact design and various interfaces.

Image: Diagram detailing the main features and ports of the BTT Pi V1.2 board, including USB, HDMI, and GPIO.

3.3. TMC5160T V1.0 Stepper Drivers (2 pieces)

These high-performance stepper drivers are designed for demanding applications, offering high current capabilities and precise motor control. They are suitable for axes requiring more power or higher precision.

Image: Two TMC5160T V1.0 stepper drivers with heatsinks.

Image: Table showing detailed specifications for the TMC5160T V1.0 stepper drivers, including voltage and current ratings.

3.4. TMC2209 V1.3 Stepper Drivers (5 pieces)

Known for their ultra-quiet operation, the TMC2209 drivers are excellent for reducing noise during 3D printing. They offer good current control and are suitable for most printer axes.

Image: Five TMC2209 V1.3 stepper drivers with heatsinks.

4. Setup and Installation

4.1. Firmware Update Instructions

To update the firmware on your BIGTREETECH Octopus Pro V1.1 board, follow these steps:

1. Download the pre-compiled Marlin or Klipper firmware from the official BIGTREETECH Github repository. If compiling your own version, ensure it is correctly built for the H723 chip.
2. Rename the firmware binary file to "firmware.bin". Any other filename will be rejected by the bootloader.
3. Use a properly formatted SD card.
4. Copy the "firmware.bin" file to the root directory of the SD card.
5. Insert the SD card into the motherboard's dedicated SD card slot.
6. Reset the motherboard (usually by pressing a reset button or power cycling). The board will automatically flash the new firmware.
7. After the update, remove the SD card and verify that the "firmware.bin" file has been renamed to "firmware.cur". This confirms successful firmware installation.

Note: For detailed wiring diagrams and specific configuration instructions for your 3D printer model, refer to the BIGTREETECH Github documentation.

5. Operating Instructions

Once the firmware is installed and the board is correctly wired to your 3D printer, you can begin operation. The specific operating procedures will depend on the firmware (Marlin or Klipper) and the host software (e.g., Octoprint, Mainsail) you are using.

• Power On: Connect the appropriate power supply to the Octopus Pro board. Ensure all connections are secure before powering on.
• Initial Configuration: Perform initial calibration steps as required by your chosen firmware, including PID tuning, E-steps calibration, and bed leveling.
• Connecting to BTT Pi: If using the BTT Pi V1.2, connect it to the Octopus Pro via the dedicated interface. Configure network settings on the BTT Pi to access it remotely.
• Printing: Load your G-code files via your host software or directly from an SD card (if supported by firmware) and initiate printing. Monitor the print progress and printer status.

6. Maintenance

• Regular Cleaning: Keep the control board and stepper drivers free from dust and debris. Use compressed air or a soft brush for cleaning.
• Connection Checks: Periodically inspect all wiring connections to ensure they are tight and free from damage. Loose connections can lead to intermittent issues or component failure.
• Firmware Updates: Check the BIGTREETECH Github repository regularly for new firmware versions or bug fixes to ensure optimal performance and access to new features.
• Driver Heatsinks: Ensure that the heatsinks on the stepper drivers are properly seated and free from obstructions to maintain efficient cooling.

7. Troubleshooting

• Printer Not Responding:
  • Verify power supply connections.
  • Check USB or network connection to the host computer/BTT Pi.
  • Re-flash firmware if corrupted or incorrectly installed.
• Stepper Motors Not Moving or Moving Erratically:
  • Ensure stepper drivers are correctly inserted and configured (e.g., UART/SPI jumpers).
  • Check motor wiring for correct pinout and secure connections.
  • Verify stepper driver current settings in firmware.
• Temperature Sensor Errors:
  • Check thermistor/PT100/PT1000 wiring.
  • Ensure correct sensor type is configured in firmware.
• Firmware Update Failure:
  • Confirm the firmware file is named "firmware.bin".
  • Ensure the SD card is properly formatted (FAT32) and not corrupted.
  • Try a different SD card.

For more detailed troubleshooting guides and community support, please visit the official BIGTREETECH Github page.

8. Specifications

8.1. BIGTREETECH Octopus Pro V1.1 H723 Control Board

• Microprocessor: ARM Cortex-M7-STM32H723ZET6
• Main Frequency: Up to 550 MHz
• Flash Memory: 512 KB
• Stepper Motor Support: 8 axes, up to 60V
• Fan Ports: 6 controllable, 2 uncontrolled (selectable Vin, 12V, 5V)
• Temperature Sensor: Onboard Max31864 for 2/4-wire PT100/PT1000
• Communication: Integrated JST interface for CANBus
• Compatibility: Marlin, Klipper, Raspberry Pi, Octoprint

8.2. BTT Pi V1.2 Board

• Processor: ALLWINNER H616 Quad-core 64-bit Cortex-A53@1.5GHz
• RAM: 1GB DDR3L SDRAM
• Wireless: Integrated 2.4G WiFi module, 100 Mbps wireless network
• GPU: MaliG32 MP2, supports OpenGL3.2
• Video Output: HDMI2.0A UHD 4K Video & Audio
• Display Support: SPI displays (e.g., HDMI5/TFT35 SPI)
• USB Ports: 4x USB 2.0
• GPIO: Standard 40-pin header
• Audio: 3.5mm audio jack
• Storage: TF card slot
• Other: ADXL345 SPI support

8.3. TMC5160T V1.0 Stepper Driver

• Chip: TMC5160T-TA
• Supply Voltage: 8V to 36V (selectable)
• Max Current: 3A
• Subdivision: 256
• Modes: SPI, SD

8.4. TMC2209 V1.3 Stepper Driver

• Technology: StealthChop2
• Continuous Current: Up to 2.0A (2.8A peak)
• Voltage Range: 4.75V to 28V
• Features: Ultra-quiet operation

9. Support and Warranty

The official manual and installation instructions are available on the BIGTREETECH Github repository. For any issues encountered during use, please contact BIGTREETECH customer support for assistance. They are committed to providing satisfactory solutions.

Please refer to your purchase documentation for specific warranty terms and conditions.