BIGTREETECH Octopus Pro with chip F446 (V1.0.1)

BIGTREETECH Octopus Pro V1.0 Control Board/ Mainboard

【Main Control Chip】The main control board uses 32-bit ARM-level Cortex-M4 series STM32H723ZE/ STM32F429ZE / STM32F446ZE chip with a frequency of up to 168MHz and the flash is 1MB.

【Support 60V Input】Supports up to 8 3D printer motherboards with a maximum 60V stepper motor. The motor drive power supply supports up to 60V input (only for the motor drive power supply).

【6 Controllable Fans】Up to 6 controllable fans, two normally open fans, and both support power supply voltage, 12V, 5V options.

【Update Firmware: Klipper/Marlin/RRF】Supports firmware update via DFU mode. This is where the firmware is sent to the board directly from the PC and does not require a bootloader however this method is not recommended for novice users as discussed later in this document.

【Level conversion IC】Supports proximity sensor, jumper optional pull-up resistor, supports more models, supports BL Touch.

Power input: DC 12/24v
Logic voltage: 3.3v
Motor driver: UART mode of on board TMC2209
Interfaces of motor driver: XM YM ZAM ZBM EM
Interfaces of temperature sensor: TH0 THB 2 WAY 100K NTC
Matched display screen: 2.4inch TFT, 3.5inch TFT, Ender 3 orginal LCD12864
PC Communication interface: USB Micro B type, easy to plug, communication buad rate 115200
File format: G code

SKR v2 vs SKR v3

The SKR e3 mini comes with a new industrial design with a larger heat sink area keeping the board cooler while operating. It supports Klipper and Marlin. The mini usb port has been changed to a Micro USB port. The SKR e3 mini v3 now has 3 controlled fan ports and an SPI outlet power supply of 3.3v/5v.