BIGTREETECH EBB36 CAN V1.1 User Manual

BIGTREETECH
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4.3.2 Work with BIGTREETECH RPI-CAN HAT
1. Type and run the following command sudo nano /boot/config.txt, and added
below contents on file config.txt.
dtparam=spi=on
dtoverlay=mcp2515-can0,oscillator=12000000,interrupt=25,spimaxfrequency=1000000
After modification, save(Ctrl + S)and exist(Ctrl + X), type sudo reboot to
reboot Raspberry Pi.
2. Type and run commands dmesg | grep -i '\(can\|spi\)' to test if RPI-CAN HAT
module is normally connected. The normal response should be as below:
[ 8.680446] CAN device driver interface
[ 8.697558] mcp251x spi0.0 can0: MCP2515 successfully initialized.
[ 9.482332] IPv6: ADDRCONF(NETDEV_CHANGE): can0: link becomes ready
3. Type sudo nano /etc/network/interfaces.d/can0 on the SSH terminal and run
the command.
auto can0
iface can0 can static
bitrate 250000
up ifconfig $IFACE txqueuelen 1024
Set the speed for CANBus at 250K(must be the same as the speed set in the
firmware (250000) CAN bus speed). Save (Ctrl + S) after modification and
exit (Ctrl + X). Type command sudo reboot to reboot Raspberry Pi.
4. Every device on CANBus will generate a canbus_uuid base on MCU's UID. If
users want to find the ID for every microcontroller, please make sure the

BIGTREETECH EBB36 CAN V1.1 Specifications

General

Microcontroller	STM32G0B1
CAN Bus	Yes
USB Interface	Type-C
Architecture	ARM Cortex-M0+
Logic Voltage	3.3V
Heater Cartridge Output	1
CNC Fan	1
Controllable Fan	1
RGB	1
GPIO Pins	16
ADC Channels	5
Flash Memory	128KB
SRAM	36KB
Clock Speed	64MHz
Communication	CAN

Summary

Revision History

Revision 01.00 (First Draft)

Initial release of the document.

Revision 01.01 (Correct the wrong mark of the heater cartridge port...)

Correction of pin diagram for heater cartridge port.

Revision 01.02 (Add precautions for hotend when DFU updates firmware)

Added safety precautions for firmware updates.

Revision 01.03 (More detailed pin Instruction)

Enhanced pin instruction details.

1 Product Introduction

1.1 Product Features

Lists key features of the EBB36 CAN V1.1 board.

1.2 Product Parameters

Details the technical specifications of the product.

1.3 Firmware Support

Specifies the supported firmware for the product.

1.4 Product Size

Provides the physical dimensions of the product.

2 Peripheral Interface

2.1 Pin Instruction

Detailed explanation of the board's pins and their functions.

3 Introduction of Interface

3.1 USB Power Supply

Explains how to supply power via USB and select power sources.

Thermistor Settings

Details settings for 100K NTC and PT1000 thermistors.

3.3 BL-Touch Wiring

Wiring diagram and instructions for connecting a BL-Touch sensor.

3.4 Filament Runout Detection Wiring

Wiring diagram for filament runout detection.

3.5 RGB Wiring

Wiring guide for RGB LED connections.

4 Klipper

4.1 Firmware Compilation

Steps to compile the Klipper firmware for the board.

4.2 Firmware Update

Instructions on how to update the firmware.

4.3 CANBus Configuration

4.3.1 Work with BIGTREETECH U2C

Configuration steps for using with BIGTREETECH U2C.

4.3.2 Work with BIGTREETECH RPI-CAN HAT

Configuration steps for using with RPI-CAN HAT.

4.4 Klipper Configuration

5 Cautions

Thermistor Interface Settings

Notes on PT1000 and 100K NTC interface compatibility.

CAN Bus Termination

Guidance on CAN bus terminal resistor configuration.

DIY Wiring Safety

Advice on DIY wiring to prevent damage.

USB Programming Power Supply

Instructions for USB programming power supply.

Component Current Limits

Limits on current for heater cartridge and fan interfaces.

Firmware Update Safety

Reminder about firmware update precautions.

6 FAQ

Current Limits for Peripherals

Details maximum current for heater and fan interfaces.

Troubleshooting USB Firmware Updates

Troubleshooting steps for firmware update issues via USB.