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Mellow Fly-SB2040 V3 Board For Voron 2.4 R2 Trident Stealthburner


Mellow Fly-SB2040 V3 Board For...


5 in stock

The SB2040 board design was inspired by hartk1213; thanks for his contribution to the Voron community, which can be found at: stealthburner-toolhead-board
The SB2040 V3 board utilises CAN/RS232 communication to connect the upper computer to the UTOC/UTOR board, enabling communication with the SB2040 through the UTOC/UTOR.
For the SB2040 board, it is recommended to choose the FLY-UTOC-1 Board because connecting most of the upper computer and the main board via USB is enough, so there is no need to use Can communication.
Reference URL:
Kliiper refers to this URL:

RRF refers to this URL:

Product  Features
  • Supports CAN bus connection for stable data transmission with minimal latency and longer distances.
  • CAN bus is compatible with all devices capable of running Linux, such as Raspberry Pi.
  • Added support for RS232 connection, offering even more stable data transmission with minimal latency and longer distances, reducing disconnections.
  • Onboard TMC2209/TMC2240 drivers for extruders.
  • Integrated LIS2DW accelerometer.
  • Added support for switching between 4.7K resistors (for NTC thermistors) or 1K resistors (for PT1000 sensors).
  • Replaced MX3.0 terminals with new connectors supporting 15A current, peaking at 30A.
  • LIS2DW’s INT1 and INT2 pins are connected to the microcontroller for user-level calibration.
  • Rated 5A heating rod port.
  • High voltage input limitations.
  • Upgraded to a 3m CAN connection cable to prevent signal loss due to improper terminal crimping.
  • Added support for MAX31865 version, originally only supporting PT100 sensors, now also supporting PT1000 sensors for higher requirements.
  • Added 8-bit DIP switch for easier configuration without needing jumpers or soldering.
  • Added two switches for toggling between RRF and Klipper CAN, Klipper CAN and RS232.
  • Added fan board switch for toggling between DC and PWM fans, enhancing customer convenience.
  • Added CAN interface for customer expansion with CAN modules.
  • Max version adds 1612 chip for RRF fast scanning

Product parameters

Product Name: SB2040 V3 Board / SB2040Pro V3 Board

Product Use: Connects Klipper expansion devices via CAN bus/RS232

Product Type: Voron 2.4 R2 Trident Invisible Burner Print Head

Communication Method: CANBUS/USB/RS232


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Satisfied Customers Let’s Look Reviews

Raven3DTech went above and beyond, they were onsite to assist with any issues and solved immediately. They sent the item out that afternoon to ensure I get the package without delay. Highly recommended site with genuine customer care. Thanks guys

Stephen Lucas Australia
Really good cusomter service and quality products!

Raven3d is literally your one-stop shop for any 3d printing-related needs. The owner is very knowledgeable about the things that you might need for your setup because he also occasionally builds printers for customers and you can also ask him if you want a finished printer. Shipping is also very fast. I am extremely happy with their service. Don't hesitate to buy from them especially if you're in Australia of course. Which I am not but still I buy my parts from them. 😉

Lance Reyes Romero Philippines

Outstanding customer service and support and the prices are comparable with overseas vendors.
I'll buy from Raven over others due to the past and continued service I receive.

Jim Pizzey Australia

“As described and better than expected regarding packing/shipping and product presentation. Highly recommended.”


“The quality is super. I have been waiting for the Goliath to come out for a long time. the packaging is also at the level.


“Exactly as described. Reached me a full week ahead of the delivery estimate. Super fast shipping!”