BTT EBB42 CAN bus Klipper Expansion PCB

BTT EBB42 CAN bus Klipper Expansion PCB

$17.98
$17.98
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BTT EBB42 CAN bus Klipper Expansion PCB
  • BTT EBB42 CAN bus Klipper Expansion PCB
  • BTT EBB42 CAN bus Klipper Expansion PCB
BTT EBB42 CAN bus Klipper Expansion PCB

BTT EBB42 CAN bus Klipper Expansion PCB

$17.98
$17.98

Klipper users in the Voron and VzBot communities face challenges with bulky cable chains and complex wiring that can cause signal interference and print errors. Without a streamlined CAN bus expansion board, toolhead control remains inefficient and prone to connection issues.

The BTT EBB42 CAN bus Klipper Expansion PCB v1.2 is designed to simplify and enhance extruder motor control by consolidating wiring into a single CAN bus connection. Featuring an ARM Cortex-M0+ STM32G0B1CBT6 MCU running at 64MHz with FDCAN support, onboard TMC2209 stepper driver in UART mode, and integrated MAX31865 temperature sensor support for PT100/PT1000 probes, this board is ideal for high-performance Klipper builds like Voron 2.4 and VzBot. Additional features include an onboard ADXL345 accelerometer for advanced motion sensing, multiple fan outputs, and versatile expansion interfaces including EndStop, I2C, and RGB lighting control.

Specification Value
Version v1.2
MCU ARM Cortex-M0+ STM32G0B1CBT6 64MHz with FDCAN bus
Stepper Driver Onboard TMC2209 in UART mode, UART address: 00, Rsense: 0.11Ω
Onboard Sensors ADXL345 Accelerometer, MAX31865 Temperature IC (PT100/PT1000 support)
Input Voltage DC 12V - 24V, 6A max
Logic Voltage 3.3V DC
Heating Interface Hotend (E0), max 5A output current
Fan Interfaces Two CNC fans (FAN0, FAN1), max 1A output current each
Expansion Interfaces EndStop, I2C, Probe, RGB, PT100/PT1000, USB Type-C, CAN Interface
Compatible Printers Voron 2.4, VzBot, Klipper-based CoreXY builds

Why Upgrade?

  • Reduces wiring complexity and weight on the extruder motor for Voron 2.4 and VzBot builds, improving motion precision.
  • Enables reliable CAN bus communication to prevent intermittent connection failures common in bulky cable chains.
  • Supports high-accuracy temperature sensing with MAX31865 for PT100/PT1000 probes, enhancing thermal control.
  • Onboard accelerometer allows advanced motion tuning and vibration compensation in Klipper firmware.
  • Compatible with TMC2209 stepper drivers for quiet and smooth extruder operation.

Best For:

  • Voron 2.4 and VzBot builders upgrading to CAN bus extruder control.
  • Klipper firmware users seeking streamlined wiring and enhanced sensor integration.
  • CoreXY printer enthusiasts requiring advanced temperature and motion sensing capabilities.
  • Users replacing bulky cable chains with lightweight CAN bus connections.
  • Builders needing integrated support for PT100/PT1000 temperature probes.

Pair With the Right Filament

This expansion board supports precise extruder control and temperature monitoring, essential for consistent printing with a variety of filaments.

  • PLA Filament — ideal for everyday printing with stable temperature control.
  • PETG Filament — benefits from accurate thermal management for better layer adhesion.
  • TPU Flexible Filament — smooth extruder operation enabled by TMC2209 drivers improves flexible filament handling.

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