Bigtreetech EBB 36/42 MAX Can Bus for Klipper Hotend Tool Head Expansion Board

The BIGTREETECH EBB42 CAN and EBB36 CAN are nozzle adapter boards made for 42 and 36 extruder motors. They connect using CAN BUS, making wiring easier to the toolhead. Features: User can select the thermistor's pull-up resistors values through jumper wire, so as to support PT1000 (2.2K pull-up resistors), which makes it convenient for DIY.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 interfacesWhat is Included: Depending on Selection1x Toolhead PCB EBB36 or EBB42 or U2C1x Toolhead Connector Pin/Connector PackNot Included:Wiring Loom [Message us - ebay does not external link] Documentation: Note 1: Please ensure you have compatible board that support CANBUS or you need U2C connected to your raspberry pi. Note 2: Wiring is not included. We do recommenced using FEP/PTFE wiring if using drag chains. Kit include one set of each tool head connectors and pins, excluding type c cable. Ensure your power line(24/12v) have enough AWG (20-22AWG), while dataline 24-26awg is suitable or source a 4 core 22 awg wire. Ensure you have fuse on power line when possible. Note 3: Always verify STM chip version when flashing firmware. For more information about BTT EBB CAN , you can check below resources: Guide: [Message us - ebay does not external link] Github: [Message us - ebay does not external link] Youtube Video: [Message us - ebay does not external link] Product HistoryOrder after November 15th 2025, board shipping may be V1.2.1 Version 1.2.1 adds ESD protection to the motor interface to prevent static electricity from causing driver errors.

Bigtreetech EBB 36/42 MAX Can Bus for Klipper Hotend Tool Head Expansion Board

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The BIGTREETECH EBB42 CAN and EBB36 CAN are nozzle adapter boards made for 42 and 36 extruder motors. They connect using CAN BUS, making wiring easier to the toolhead.

Features:

User can select the thermistor's pull-up resistors values through jumper wire, so as to support PT1000 (2.2K pull-up resistors), which makes it convenient for DIY.
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

What is Included:
Depending on Selection

1x Toolhead PCB EBB36 or EBB42 or U2C
1x Toolhead Connector Pin/Connector Pack

Not Included:

Wiring Loom [Message us - ebay does not external link]

Documentation:

Note 1: Please ensure you have compatible board that support CANBUS or you need U2C connected to your raspberry pi.

Note 2: Wiring is not included. We do recommenced using FEP/PTFE wiring if using drag chains. Kit include one set of each tool head connectors and pins, excluding type c cable. Ensure your power line(24/12v) have enough AWG (20-22AWG), while dataline 24-26awg is suitable or source a 4 core 22 awg wire. Ensure you have fuse on power line when possible.

Note 3: Always verify STM chip version when flashing firmware.

For more information about BTT EBB CAN , you can check below resources:

Guide: [Message us - ebay does not external link]

Github: [Message us - ebay does not external link]

Youtube Video: [Message us - ebay does not external link]

Product History

Order after November 15th 2025, board shipping may be V1.2.1
- Version 1.2.1 adds ESD protection to the motor interface to prevent static electricity from causing driver errors.

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