Note:

Octopus Pro offers different versions of MCUs to meet the individual needs of DIY users:

• ARM Cortex-M7 series, STM32H723ZET6, main frequency up to 550MHz, supports Marlin and Klipper, the best choice for Klipper high-speed printing. However, due to the limitation of 512kb flash, currently, RRF is not supported. When this chip enters DFU mode, HE0 and HE2 will immediately start working. Please do not enter DFU mode when powered by 12/24V.
• ARM Cortex-M4 series, STM32F429ZGT6, 180MHz main frequency, supports Marlin and Klipper, and with 1Mb flash, it can support RRF full function.
• ARM Cortex-M4 series, STM32F446ZET6, 180MHz main frequency, supports Marlin and Klipper. However, due to the limitation of 512kb flash, it can only use the BTT custom version of RRF cutting off some functions.

The BIGTREETECH Octopus Pro motherboard is a 32-bit 3D printer motherboard designed and manufactured by the 3D printing team of Shenzhen BIQU Technology Co., Ltd. =

• Brand Name: BIQU
• Item Type: Motherboard
• Model Number: BIGTREETECH Octopus PRO v1.1
• Product name: Octopus PRO 32-Bit Board
• Material: 4-layer PCB
• MPU:ARM Cortex-M4 CPU
• Size: 160 mm x 100 mm
• Input Voltage: DC 15-28V, Board/Hot Bed/Motor Supplies fully separated
• Fuses: 3
• Limit Switches: 6
• Filament Sensor Inputs: 2
• Firmware Support: Marlin, Klipper, RRF
• Wifi Interface: ESP8266 supported
• Fan Interfaces: 6 x PWM fans, 2 always on, 5/12/24V
• Expansion Interfaces: Probe, PS-ON, PWR-DET, Fil-DET, etc.
• Motor Driver Support: TMC5160, TMC2209, TMC2225, TMC2226, TMC2208, TMC2130, ST820, LV8729, DRV8825, A4988
• Stepper Motor Driver Sockets: 8 x sockets(MOTOR0-7)
• Stepper Motor Voltage: 12-60V
• Drive input level: 5V
• Supported Stepper Driver Interfaces: SPI, UART, STEP/DIR
• Temperature Sensor Interfaces: TB, T0, T1, T2, T3
• Onboard MAX31865
• CANBus with RJ11 Interface
• USB-A port for Raspberry Pi Power Supply
• Display Interfaces: Serial Touch Screen, LCD Display, etc
• PC Communication: USB type C with coinfigurable BAUD
• Place of Origin: Guangdong China (Mainland)

Instructions and Firmware on Github