BIGTREETECH BTT EBB42 CAN V1.2 Stepper Motor Driver


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SKU: 1611635
  1. Application: For Connecting Klipper expansion device
  2. Support CAN Bus Connection
  3. More Stabe data transmission
  4. Shirt Delay longer distance
  5. Enhanced Safety
  6. Ease of usd
  7. Extensive expansion Ports
  8. Onboard TMC2209 Driver used for extruder
  9. Support 2 wire Or 4 wire PT100 or PT1000(max31865)
  10. 120R terminal resistance of CAN can be selected through the jumper cap
  11. Reserved RGB Port for illumination
  12. Onbaord ADXL345 accekerometer
  13. To Choose whether USB Provides power for motherboard Via jumper cap
  14. EBB42 CAN Applicable for 35/36/42mm Motors (to Prevent short circuit be careful not to get the pin head of the motherboard contacted with the metal)


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Category: 3D Printer Extruder Parts and Fans

This is a BIGTREETECH EBB42 CAN V1.2. BIGTREETECH EBB36 or EBB42 CAN is a nozzle adapter board specially designed for a 36 or 42 stepper motor extruder, which is launched by the 3D printing team Shenzhen Big Tree Technology Co., Ltd. BIGTREETECH EBB42 CAN V1.2 can communicate via USB or CAN, which will greatly simplify the wirings.

BTT’s EBB36 CAN Bus Expansion Boards offer a simple path to an efficient tool head PCB. This include an on-board TMC2209 extruder motor driver and greatly reduce the number of wires (and weight) to your 3D printer’s tool head.

Note: Actual product may vary in color.


  1. With BOOT and RESET buttons reserved, users can update the firmware via DFU mode by USB.
  2. Added protection circuit on the thermistor avoids burning the main control chip caused by leakage current from the heating rod.
  3. Users can select the thermistor’s pull-up resistor values through a jumper wire, so as to support PT1000 (2.2K pull-up resistors), which makes it convenient for DIY.
  4. Connect the USB with a jumper cap to get it powered on, which effectively isolates the main control board DC-DC from USB 5V.
  5. Reserved I2C interface allows for filament broke and clogged detection, and supports other DIY functions.
  6. Added anti-flyback diodes on the heating rod and fans’ ports effectively protect the MOS tube from being burned due to reverse voltage.
  7. Anti-reverse connection protection on the power interface prevents users from burning the motherboard when mistakenly connecting the reverse power line during DIY.
  8. Onboard MAX31865 supports selecting 2-wire or 4-wire of PT100/ PT1000.
  9. Supports communication via CAN or USB. The terminal resistor 120R of CAN can be selected through the jumper cap, and it reserves CAN expansion interfaces.
  10. Equipped ESD protection chip on the USB port prevents the main control board from being broken down by the static electricity of the USB port.
  11.  The adaptor board is equipped with terminals, female reeds, double-way studs and screws, which are required for DIY, greatly meeting the DIY needs of customers.

Package Includes:


1 x Accessories Set (As Shown in Image)

SKU: 1611635 Category:
Item Type:



36/42 stepper motor extruder, Klipper expansion


Metal, HQ Plastic


Black PCB

Logic Voltage

DC 3.3V


onboard TMC2209



Input Voltage (V)

DC12V-DC24V 9A

Maximum Output Current





ARM Cortex-M0 STM32F072C8T6 48

Dimensions (LxWxH) mm

45 x 45 x 13

Weight (g):


Shipping Weight 0.049 kg
Shipping Dimensions 10 × 5.5 × 3.5 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China