# BigTreeTech EBB SB2209 CAN Toolhead Board (RP2040)

> Toolhead board designed for the Voron StealthBurner. Powered by RP2040, supports CAN and USB, includes TMC2209, ADXL345 accelerometer, and PT100/PT1000 for Klipper 3D printers.

## Quick Facts

- **Brand:** BigTreeTech
- **Board Type:** Toolhead Board
- **Price:** ~$25.68
- **Product Readiness:** consumer
- **CPU:** RP2040
- **CPU Architecture:** ARM Cortex-M0+
- **CPU Cores:** 2
- **RAM:** 264KB
- **Flash:** 2MB
- **USB:** USB Type-C
- **Power:** DC 12V-24V 9A
- **Operating Voltage:** 3.3V
- **SD Card:** No

## Open Source

- **Firmware:** Yes
- **Schematics:** Yes
- **PCB Layout:** Yes

## Compatible Firmware

Klipper

## Use Cases

- 3D Printing

## Components

- **TMC2209** (stepper-driver): Onboard TMC2209 in UART mode for extruder control — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.analog.com%2Fmedia%2Fen%2Ftechnical-documentation%2Fdata-sheets%2FTMC2209_datasheet_rev1.09.pdf&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)
- **ADXL345** (accelerometer): Onboard ADXL345 for Klipper input shaping resonance compensation — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.analog.com%2Fmedia%2Fen%2Ftechnical-documentation%2Fdata-sheets%2FADXL345.pdf&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)
- **MAX31865** (temperature-ic): Onboard MAX31865 for PT100/PT1000 RTD sensor support — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.analog.com%2Fmedia%2Fen%2Ftechnical-documentation%2Fdata-sheets%2FMAX31865.pdf&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)
- **100K NTC** (thermistor): NTC 100K or PT1000 thermistor input — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.vishay.com%2Fdocs%2F29049%2Fntcle100.pdf&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)
- **Triple Fan Output** (fan-output): FAN1, FAN2 CNC fan ports plus 4W_FAN 4-wire PWM fan port — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fbigtreetech%2FEBB%2Ftree%2Fmaster%2FEBB%2520SB2209%2520CAN%2520%28RP2040%29&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)
- **Hotend Heater Output** (heater-output): Hotend heater output port — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fbigtreetech%2FEBB%2Ftree%2Fmaster%2FEBB%2520SB2209%2520CAN%2520%28RP2040%29&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)

## Protocols

- **CAN Bus**
- **USB**
- **UART**
- **SPI**
- **I2C**

## Description

## Overview

The BigTreeTech EBB SB2209 CAN is a toolhead board specifically engineered for the Voron StealthBurner carriage. Powered by the Raspberry Pi RP2040 microcontroller, it consolidates all toolhead wiring into a single CAN bus cable, significantly reducing wiring complexity on the toolhead. It supports both CAN bus and USB communication, making it flexible for both CAN and direct-USB printer setups.

## Key Features

The board features an integrated TMC2209 stepper driver in UART mode, an ADXL345 accelerometer for Klipper input shaping calibration, and a MAX31865 IC supporting PT100/PT1000 RTD sensors. Fan outputs include two standard CNC fans (FAN1, FAN2) and a dedicated 4-wire PWM fan port (4W_FAN). It handles up to 9A input on 12–24V and connects to the StealthBurner toolhead via a matching 30-pin connector.

## Open Source

Hardware schematics, PCB layouts, pin diagrams, and Klipper sample configuration files are all published on the GitHub repository at github.com/bigtreetech/EBB. The board runs Klipper firmware exclusively.

## Where to Buy

- [BIQU Equipment](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-ebb-sb2209-can-v1-0&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export) — $25.68

## Resources

- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fbigtreetech%2FEBB&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)
- [product](https://openhardware.directory/r?to=https%3A%2F%2Fbiqu.equipment%2Fproducts%2Fbigtreetech-ebb-sb2209-can-v1-0&ref=openhardware.directory&product=bigtreetech-ebb-sb2209-can-toolhead-board-rp2040&source=md-export)

## Tags

`can-bus`, `toolhead-board`, `klipper`, `3d-printing`, `rp2040`, `tmc2209`, `adxl345`, `bigtreetech`, `voron`, `stealthburner`, `ebb-sb2209`

## Images

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