BIGTREETECH Octopus V1.1 Control Board 32bit Compatible TMC2209, TMC2208 Step...

• Main Control Chip: Uses a 32-bit ARM Cortex-M4 series STM32F446ZET6 main control chip with a core frequency of 180MHz
• Strong DIY Support: This motherboard supports up to 8 stepper drivers with 9 stepper driver outputs in total; And up to 6 PWM fans and 2 always-on fans with the ability to individually select the voltage rail that will drive each fan. Select from Vin, 12V or 5V
• Realize Online Printing: Interfaces with a Raspberry-Pi using emulated serial over USB or direct UART to any of the serial ports on the board, to realize Klipper Firmware and Raspberry-Pi Online Printing
• Motherboard Expansion Function: Support BLTouch, locked-rotor detection, shutdown after printing, resume printing after power failure, CAN bus, U disk function, IIC expansion; at the same time reserved WIFI interface, PT100 thermistor interface (optional, Only reserved interfaces, customers need to purchase chip welding, please pay attention.), dual Z-axis printer
• Increase Protection Function: Uses high-performance MOSFETs to increase heating efficiency while also reducing heat generation on the motherboard. Supports “print from SD card” and “print via USB OTG” using the integrated USB-A port

1. Octopus V1.1 Motherboard Features: 1). Uses a 32-bit ARM Cortex-M4 series STM32F446ZET6 main control chip with a core frequency of 180MHz. 2). Supports running Klipper and Marlin. 3). Supports up to 4 hotend heaters. 4). Provides separate power inputs for motors, bed heating and logic/fans/hotends. 5). Supports 12V or 24V supply inputs with built in 12V, 5V and 3.3V regulators to provide rails for peripheral use. 6). Includes USB-C interface which supports an emulated serial port that allows printing via USB. 7). Includes a bootloader that allows firmware upgrades via the SD card. This offers a simple, efficient, and convenient way to update the firmware. 8). Uses easily replaceable fuses. 9). Supports “print from SD card” and “print via USB OTG” using the integrated USB-A port. 10). Provides two stepper outputs, connected in parallel, to the Z driver allowing for a parallel, dual Z axis drive. 11). 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. 12). Includes an onboard, 32K EEPROM (AT24C32). 13). Provides a DIY PT100 interface. In order to enable the interface a user would need to purchase an INA826AIDR amplifier in the SPO 8 package separately and solder it in place on the board. The connector and passive circuitry are already provided. All that is required is the amplifier IC. 14). Thermistor input protection. This allows you to short a thermistor input directly to a voltage source (not that this makes it a good habit to pick up) up to Vin without causing damage to the motherboard. 15). Allows unused thermistor inputs to be used as general purpose inputs by providing an input pin for each that bypasses the protection circuit. 16). Supports CAN BUS using a 6P6C RJ11 interface.

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