BIGTREETECH EBB42 CAN V1.2 Board

More details:

https://github.com/bigtreetech/EBB#warning-

EBB：Extruder Breakout Board

Brief Instruction

BIGTREETECH EBB42 CAN is a nozzle adapter board specially designed for the 42 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.

Suggestion:Do not turn on HDMI, it may report an error

BTT EEB42 CAN only supports Klipper at the present.

Application：For connecting Klipper expansion device

EBB42 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 witha 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 throughthe 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 accessories for DIY, greatly meeting the DIY needs of customers.

1.2 Parameters

1. External Dimensions: 40mmx 40mm
2. Installation Dimensions:Hole spacing 31mmx 31mm, M3 screw holex 4
3. Microprocessor: ARM Cortex-M0 STM32F072C8T6 48MHz
4. Input Voltage: DC12V-DC24V 9A
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: Onboard TMC2209
12. Driver Working Mode: UART
13. Stepper Motor Interface: EM
14. Temperature Sensor Interface(Optional): 1 channel 100K NTC or PT1000 (TH0), 1 channel PT100/PT1000
15. USB Communication Interface: USB-Type-C
16. DCDC 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;