This is one sweet board, perfect for a Voron build. ARM Cortex-M4 STM32F446ZET6 32-bit microcontroller at 180MHz Support for Klipper and Marlin firmwares Interfaces for Raspberry Pi (USB and UART by GPIO) Up to 4 hotends available Integrated DCDC to provide 12V(4A), 5V(8A) and 3.3V(1A) power supply Up to 6 controllable fans and 2 without control with the possibility of voltage selection (Vin, 12V and 5V) Protection against short circuit on fans, something very important since it is one of the most common problems USB-C connector that allows serial emulation to print using USB Compatibility with almost any screen High performance MOSFETs, improve heating speed and efficiency Protection fuses easily replaceable Double motor output for the Z axis Improvements in the bootloader, supporting the update by USB (recommended) and DFU (advanced users) 32K EEPROM (AT24C32) Connectors for RGB LEDs and Neopixel Connector for WiFi interface PT100 interface (requires INA8 amplifier 26AIDR welded to plate in socket) Protection against short circuit in thermistors, another great improvement applied to the fans. It allows reusing these pins for other tasks with a pin that bypasses these protections BLTouch support and the like with a connector intended for them and usable by other ABL systems. The PROBE port was added extra protection with an optocoupler so as not to need to use a BAT85 diode CAN BUS via ethernet connector for future expansion modules SPI BUS expansion port for SPI modules such as MAX31865 I2C BUS expansion port for I2C modules Support for modules Relay and UPS BTT Octopus FYSETC Spider Processor Cortex-M4 STM32F446 (180MHz) Cortex-M4 STM32F446 (180MHz) Drivers 8 drivers 8 drivers Hotends 4 hotends + 1 heatbed 3 hotends + 1 heatbed Fans 8 connectors (5V, 12V, 24V) 6 connectors (5V, 12V, 24V) 6 manageable + 2 normal 3 manageable + 3 normal Endstops 8 Endstops 6 Endstops Power 4 connectors 3 connectors (PWR IN, BED IN, BED OUT, MOTOR PWR) (PWR IN, BED IN, BED OUT) BLTouch Yes, dedicated connector Yes Sensorless Yes Yes CANBus Yes Yes Raspberry Pi Yes Yes (source: https://3dwork.io/en/btt-octopus/ - review for a major cheat sheet on this board!)
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