BIGTREETECH EBB CAN Tool Board for 3D Printers
BIGTREETECH EBB42 CAN is a nozzle adapter board specially designed for the 42 extruder stepper motor, launched by the 3D printing team Shenzhen Big Tree Technology Co., Ltd. It can communicate via USB port or CAN BUS, greatly simplifying wiring.
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BTT EEB42 CAN only supports Klipper at present.
Features
- With the BOOT and RESET buttons reserved, users can update the firmware via DFU mode via USB.
- Added a protection circuit on the thermistor to avoid 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 to support PT1000 (2.2K pull-up resistors), which is convenient for DIY.
- Connect the USB with a jumper cap to power it on, which effectively isolates the main control board DC-DC from USB 5V.
- Reserved I2C interface allows for filament break and clogged detection, and supports other DIY functions.
- Added anti-flyback diodes on the heating rod and fan 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 for PT100/ PT1000.
- Supports communication via CAN or USB. The 120R terminal resistor of CAN can be selected through the jumper cap, and it reserves CAN expansion interfaces.
- Equipped with an ESD protection chip on the USB port to prevent the main control board from being damaged by static electricity from the USB port.
- The adapter 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.
Specifications
1. External Dimensions: 40mm x 40mm
2. Installation Dimensions: Hole spacing 31mm x 31mm, M3 screw hole x 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
U2C
BIGTREETECH U2C is a USB to CAN bus module, which can convert the USB port of Raspberry Pi to the CAN bus, and connect 3D printing motherboards, BIGTREETECH EBB35/36/42 CAN, and other products through the CAN bus. There are many different forms of CAN interfaces on the board, which are helpful for connecting 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.
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.
6. The difference between U2C V1.0 and U2C V2.1: U2C V1.0 has 1 CAN OUTPUT, U2C V2.1 has 3 CAN OUTPUT.
EBB:
https://github.com/bigtreetech/EBB
U2C:
https://github.com/bigtreetech/U2C
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