BTT Octopus Controller Board / 3D Printer Control System

Voron and Klipper builders face complex wiring and control challenges that can cause print failures or limit upgrade potential. Without a robust controller board, users risk unstable firmware performance and insufficient hardware support for advanced features.

The BTT Octopus Controller Board is a 32-bit ARM Cortex-M4 STM32F446ZET6 microcontroller running at 180MHz, designed specifically for high-performance 3D printer control systems. It supports both Klipper and Marlin firmware, making it ideal for Voron 2.4, Trident, and other CoreXY builds. This board offers up to 4 hotend outputs, integrated DCDC power supplies, and multiple fan controls with short circuit protection, ensuring reliable operation in demanding multi-extruder setups. Additional features include USB-C connectivity for direct printing, BLTouch and other ABL system support, PT100 sensor interface, and expansion ports for CAN BUS, SPI, and I2C modules, making it a versatile choice for advanced DIY and upgrade projects.

Why Upgrade?

• Ensure stable and high-speed control with a 180MHz 32-bit microcontroller for Voron 2.4 and Trident printers
• Support multiple hotends and fans with integrated short circuit protection to prevent hardware damage
• Enable advanced sensor integration including PT100 and BLTouch for precise temperature and bed leveling
• Expand functionality with CAN BUS, SPI, and I2C ports for future-proofing and modular upgrades
• Seamless compatibility with Klipper and Marlin firmware for flexible firmware choices

Best For:

• Voron 2.4 and Trident builders requiring a reliable, feature-rich control board
• CoreXY enthusiasts upgrading to multi-extruder setups with complex fan and sensor needs
• Klipper ecosystem users seeking USB-C connectivity and Raspberry Pi integration
• DIY 3D printer builders needing expandable interfaces for advanced modules
• Users implementing BLTouch or other automatic bed leveling systems

Pair With the Right Filament

This controller board supports advanced hardware setups that enable printing with a wide range of filaments, from flexible to high-temperature materials.

• PLA Filament — ideal for general-purpose printing with stable temperature control
• PETG Filament — benefits from precise thermal management and fan control
• TPU Flexible Filament — supported by multi-extruder setups and advanced firmware features