BIGTREETECH EBB 36/42 Can Bus U2C V2.1/V2.0 for Connecting Klipper Expansion Device Support PT1000

SKU: 1020000382

$15.99 $45.88 Save $29.89

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1 Pc
2 Pcs
EBB36 CAN V1.2 (no Max31865)
EBB42 CAN V1.2 (no Max31865)
EBB 36 CAN V1.2(G0B1)
EBB42 CAN V1.2
U2C V2.1 -3 CAN Output
U2C V2.0 -1 CAN Output
EBB42 CAN V1.1 (no Max31865)
2022 09 06t114842

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180-days warranty

7-days refund

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EBB 36/42 Can Bus


Product Introduction:

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. It can communicate via USB or CAN, which will greatly simplify the wirings. 

Main Features:

  • With BOOT and RESET buttons reserved, users can update the firmware via DFU mode by USB.

  • Added protection circuit on the thermistor avoids burning the main control chip caused by leakage current from the heating rod.

  • 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.

  • Connect the USB with a jumper cap to get it powered on, which effectively isolates the main control board DC-DC from USB 5V.

  • Reserved I2C interface allows for filament broke and clogged detection, and supports other DIY functions.

  • Added anti-flyback diodes on the heating rod and fans' ports effectively protect the MOS tube from being burned due to reverse voltage.

  • Anti-reverse connection protection on the power interface prevents users from burning the motherboard when mistakenly connecting the reverse power line during DIY.

  • Onboard MAX31865 supports selecting 2-wire or 4-wire of PT100/ PT1000.

  • 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.

  • 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.

  •  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.

U2C V2.1/V2.0


Product Introduction:

BIGTREETECH U2C is a USB to CAN bus module, which can convert the USB port of Raspberry Pi to the CAN bus, and connect the 3D printing motherboard, BTT EBB36/42 CAN and other products through CAN bus. There are many different forms of CAN interfaces on the board, which are helpful to connect to different boards.

CAN bus has many advantages in the field of industrial control, so our company has launched this USB to CAN module. The CAN bus has a long transmission
distance and a large number of nodes can be mounted on it. So the motherboard, EBB, and other expansion boards can be mounted on the same CAN bus at the same time.

Main Features:

  • Support CAN bus connection, long data transmission, strong anti-noise ability strong real-time performance, and high reliability.

  • The surface of the PCB adopts the ENIG process.

  • The TYPE-C port is equipped with ESD protection to prevent static electricity from damaging the hardware.

  • Support firmware updates for the motherboard through SWD or hardware DFU.

  • More than on the CAN interface.




Customer Reviews

Based on 11 reviews
Volker Holzmann
Best upgrade to my printer

Using this EBB36 with a BTT Octopus, via the CAN port of the Octo. Now I've just 4 high flex silicon wires instead of Tons of cablesngoint to my printhead. Together with Klipper its the best upgrade I'd ever done to my printer. Great product!

Brian Warkus
Nice little toolhead board

Fast delivery and good quality.
Everything works like a charm!
The only downside is the tiny connector for the hotend. It is hardly possible to insert a wire with ferrules...
Please change this connector!

Alin Jerpelea
missing inductive probe functionality

Would be nice to include an optocupler and resistor so that people can opt for the clicky sensor or an industrial inductive probe.

Cdante Perry
Amazing quality and price!

Thank you for your well built and beautiful electronics. Now if I could only find the time to learn how to maximize each new piece I got from you!

Shaun Carter
Working great with Klipper

If you’re using the Octopus CANBus to connect EBB36, I recommend using BTTs instructions and firmware - note: only Klipper is currently supported. Tried other online instructions and after several hours of checking and rechecking and reflashing firmwares I tried BTTs firmware and instructions and it just worked. Very happy with the EBB36 and Big Tree Tech


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