More details:

EBB：Extruder Breakout Board

Brief Instruction

BIGTREETECH EBB36 CAN / EBB42 CAN is a nozzle adapter board specially designed for the 36 extruder stepper motor, which is launched by the 3D printing team Shenzhen Big Tree Technology Co., Ltd. It can communicate via USB port, or CAN BUS,greatly simplifying wirings.

Application：For connecting Klipper expansion device

EBB36 CAN

1.1 Features

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. 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.

4. Connect the USB with a jumper cap to get it power 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.

1.2 Parameters

1. External Dimensions: 51.5mm x 37mm. 

2. Installation Dimensions:hole spacing 43.85mm, M3screw holex 2

3. Microprocessor:ARM Cortex-M0 STM32F072C8T6 48MHz

4. Input Voltage: DC12V-DC24V 6A

5. Logic Voltage: DC 3.3V

6. Heating Interface: Heating rod (E0), maximum output current: 5A

7. Onboard Sensor: ADXL345

8. Fan Interfaces: two CNC fans(FAN0, FAN1)

9. Maximum Output Current of Fan Interface: 1A, Peak Value 1.5A

10. Expansion Interfaces:EndStop, I2C, Probe, RGB, PT100/PT1000, USB interface, CAN Interface

11. Motor Drive: OnboardTMC2209

12. Driver Working Mode: UART

13. Stepper Motor Interface:EM

14. Temperature Sensor Interface Optional: 1 Channel100K NTC or PT1000(TH0), 1Channel PT100/PT1000

15. USBCommunication Interface:USB-Type-C

16. DC 5V Maximum Output Current: 1A

1.3 Firmware

BTT EEB36 CAN only supports Klipper at the present.

Introduction of U2C:

BIGTREETECH U2C is a USB to CAN bus module, which can convert the USB port of Raspberry Pi to CAN bus, and connect 3D printing motherboard, BIGTREETECH EBB35/36/42 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.  

Features  

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

2. The surface of the PCB adopts the immersion gold process

3. TYPE-C port ESD protection to prevent static electricity from damaging hardware

4. Support firmware update for the master through SWD or hardware DFU

5. Rich CAN interface

Precautions

1.12/24V and GND should not be reversed.

2.When using CAN communication, you need to see which CAN node is used as a terminal. If it is a terminal, you must plug the jumper cap at the 120R position;