Bigtreetech EBB SB2209 CAN (RP2040) V1.0 For Voron StealthBurner

Specifications

• Microcontroller: Raspberry Pi RP2040 (Dual-core ARM Cortex-M0+ @ 133MHz)
• Onboard Stepper Driver: TMC2209 (UART mode control, up to 1.2A RMS drive current)
• Communication Interface: CAN Bus (via onboard transceiver) or USB Type-C
• Compatibility: Native form factor fit for Voron StealthBurner toolhead
• Operating Voltage: 12V / 24V DC input (Built-in high-efficiency DC-DC step-down converters)
• Heater Out Port: 1x Hotend Heater (Up to 5A continuous output)
• Fan Ports: 2x PWM Fans (FAN0, FAN1), 1x 4-Wire Tacho Fan Port (Selectable 5V/12V/24V headers)
• Temperature Sensor Inputs: 1x Onboard MAX31865 (Supports 2-wire / 4-wire PT100 or PT1000 RTDs) + 1x NTC100K Thermistor Port
• Endstop / Probe Ports: Dedicated ports for Toolhead Endstops, TAP, Klicky, or Voron Inductive Probes
• RGB LED Port: Dedicated output for StealthBurner Neopixel RGB LEDs
• Onboard Accelerometer: ADXL345 onboard for fast Klipper Input Shaping calibration

Applications

• Voron 2.4 / Trident / Switchwire Upgrades: Eliminating toolhead drag-chain cable clutter by converting to a high-speed CAN bus network.
• Custom Klipper CoreXY Printers: Deploying compact, multi-functional toolhead controller nodes for custom enclosed high-speed printers.
• Automated Input Shaping Calibration: Running real-time resonance testing directly from the toolhead using the built-in ADXL345 accelerometer.
• PT100/PT1000 High-Temp Printing: Interfacing precision RTD temperature sensors for high-temperature filament engineering (PEEK, ABS, ASA) without extra amplifier boards.

Unlock New Capabilities

• Where You Started (Prerequisites): You built your Voron or CoreXY printer using traditional cable chains, routing dozens of individual cables down to an Octopus or Spider mainboard, facing frequent wire breaks and messy maintenance.
• What This Unlocks: Upgrading to the EBB SB2209 (RP2040) compresses your entire toolhead harness down to a single 4-wire umbilical or flexible CAN cable. You unlock modular toolhead swapping, precise on-board Input Shaping with the integrated ADXL345, and whisper-quiet TMC2209 extruder motor control.
• Execution Effort & Requirements: Intermediate to Advanced. Requires compiling Klipper firmware for the RP2040 MCU, setting up a CAN bridge (such as a BTT U2C or mainboard CAN mode), and configuring your printer.cfg file.

Package Includes

• 1 × EBB SB2209 CAN (RP2040)
  
• 1 × EBB SB0000 CAN
  
• 1 × Heat sink
  
• 1 × DIY crimp terminal set
  
• 1 × Jumper cap set
  
• 2 × Zip ties
  
• 1 × Fixing screw set
  
•  1 × Thermistor cable

Frequently Asked Questions (FAQ)

• What microcontroller powers the BTT EBB SB2209 V1.0 board?
  This version features the Raspberry Pi RP2040 32-bit dual-core ARM Cortex-M0+ processor.
• How does the EBB SB2209 connect to the Raspberry Pi running Klipper?
  It connects via CAN Bus (typically using a USB-to-CAN adapter like the BTT U2C) or directly via a USB Type-C cable.
• Does this board have an onboard stepper driver for the extruder?
  Yes, it includes an integrated TMC2209 stepper driver configured in UART mode for silent and precise extrusion.
• Can I connect a PT100 or PT1000 RTD sensor directly to this board?
  Yes, it includes an onboard MAX31865 chip supporting both 2-wire and 4-wire PT100/PT1000 RTDs as well as standard NTC100K thermistors.
• Is the EBB SB2209 compatible with Voron TAP?
  Yes, it features dedicated probe headers with selectable voltage levels compatible with Voron TAP, Klicky, and inductive probes.
• How many wires are required to run the entire toolhead using CAN Bus?
  Just 4 wires: two for power (24V and GND) and two for communication (CAN_H and CAN_L).
• Does the EBB SB2209 have an onboard accelerometer for Input Shaping?
  Yes, it features an onboard ADXL345 accelerometer for measuring toolhead resonance directly inside Klipper.
• Can I change the voltage for connected fans?
  Yes, fan header voltages (FAN0, FAN1) can be set to 5V, 12V, or 24V using onboard jumper configuration pins.
• What firmware is required on the toolhead board?
  It runs Klipper firmware compiled specifically for the RP2040 architecture with CANbus enabling.
• Does it fit inside the standard Voron StealthBurner housing?
  Yes, it is designed with a custom form factor that mounts directly onto the back of the Voron StealthBurner toolhead.
• Do I need to solder wires onto the board?
  No, the board features pre-soldered JST-PH and Micro-Fit headers for no-solder plug-and-play assembly.
• What communication speed does the onboard CAN transceiver support?
  It supports standard CAN bus speeds up to 1 Mbps, which is recommended for Klipper toolhead setups.
• How do I find the CANbus UUID for Klipper configuration?
  You can query the connected CAN node ID in the Raspberry Pi terminal using Klipper's canbus_query.py script.
• Can I drive 4-wire PWM tachometer fans with this board?
  Yes, it provides dedicated 4-pin fan headers with tachometer reading support for precise fan speed control.
• What is the maximum current output for the hotend heater?
  The onboard MOSFET supports hotend heaters drawing up to 5A continuous output.
• How do I flash Klipper firmware onto the RP2040 MCU?
  You can flash it by putting the RP2040 into BOOTSEL mode via USB and copying the .uf2 firmware file, or update it via CANboot/Katapult.
• Can I control RGB LEDs on the StealthBurner using this board?
  Yes, it features a dedicated 3-pin RGB header designed to power and control WS2812B / Neopixel LEDs.