BIG TREE TECH M4P Manuale utente

Shenzhen Big Tree Technology Co., Ltd.

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BIGTREETECH

M4P & CB1

User Manual

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BIGTREETECH

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Contents

Contents .........................................................................2

Revision History ..................................................................4

1. Brief Introduction ...............................................................5

1.1 Main Features .............................................................5

1.1.1 CB1 .................................................................5

1.1.2 M4P .................................................................5

1.2 Basic Parameters ..........................................................6

1.3 Product Dimension ........................................................7

2. Peripheral Interface .............................................................8

2.1 Interface Diagram ......................................................8

2.1 Pin Out................................................................8

3. Interface Instruction.............................................................9

3.1 Installing the Core Board ...................................................9

3.2 40 pin GPIO ...............................................................9

3.3 Type-C ...................................................................10

3.4 Stepper Driver ............................................................10

3.4.1 Normal STEP/DIR(STANDALONE) Mode...............................10

3.4.2 UART Mode of TMC Driver ...........................................12

3.4.3 SPI Mode of TMC Driver .............................................12

3.4.4 DIAG(Sensorless Homing) of TMC Driver .............................12

3.4.5 Stepper Driver Voltage Selection .....................................13

3.4.5.1 Driver independent power supply .................................13

3.4.5.2 Main power supply..............................................13

3.5 BLTouch Wiring...........................................................14

3.6 EXP1+EXP2 and LCD Screen Wiring........................................14

3.7 RGB Wiring ..............................................................15

3.8 DSI/CSI Wiring............................................................15

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3.9 SPI Display Wiring ........................................................16

4. Raspberry PI CM4 Setup steps ..................................................17

4.1 Download OS Image ......................................................17

4.2 Download and Install Raspberry Pi Imager ..................................17

4.3 Write OS Image ...........................................................18

4.3.1 CM4 LITE Version (Micro SD Card)....................................18

4.3.2 CM4 eMMC Version(Note: eMMC version will not tun the system from the

Micro SD card.) ..........................................................21

4.4. System Settings (CM4) ...................................................22

4.4.1 USB 2.0 Hub Ports ..................................................22

4.4.2 DSI1 Display Interface ...............................................22

4.4.3 CSI1 Camera........................................................22

5. BIGTREETECH CB1 Setup steps ................................................22

5.1 Download OS Image ......................................................22

5.2 Download and Install Raspberry Pi Imager ..................................22

5.3 Write OS Image ...........................................................23

5.4 WIFI Setting ..............................................................25

5.5 Install Klipper with kiauh Script ............................................25

5.6 Checkout Klipper Branch..................................................27

5.7 Fix KlipperScreen.........................................................28

6. Configure the motherboard .....................................................29

6.1 ssh connect to device .....................................................29

6.2 Compile firmware .........................................................31

6.3 Firmware update..........................................................32

6.3.1 Update using SD Card ...............................................32

6.3.2 Update using DFU...................................................32

6.4 Configure Klipper .........................................................33

7. Precautions ...................................................................34

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Revision History

Revision

Description

Date

01.00

1st Draft

2022/06/01

01.01

Fix 40 pin GPIO

2022/06/20

01.02

1. More detailed CB1 dimension

2. Add wiring of M4P + expansion module

3. Add MCU configuration, system settings, etc…

2022/06/27

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1. Brief Introduction

BIGTREETECH CB1 is an alternative to Raspberry Pi CM4, which is currently out of

stock. BIGTREETECH M4P is a 4-axis motherboard using a CM4 BTB header, which

can work with CB1 or CM4 perfectly.

1.1 Main Features

1.1.1 CB1

1. CPU: Allwinner H616, Quad-core Cortex-A53 @1.5GHz

2. GPU: Mali G31 MP2, support OpenGL3.2

3. RAM: 512MB/1GB DDR3L SDRAM

4. Display: HDMI2.0A interface, support 4K display

5. USB 2.0 port

6. 100M Ethernet + 100M WiFi

7. The same BTB header as the Raspberry Pi CM4

1.1.2 M4P

1. DSI1, CSI1 interface (for CM4)

2. Gigabit Ethernet interface (1000M for CM4, 100M for CB1)

3. 3 USB 2.0 ports

4. Equipping the ESD protection chip on the USB and Ethernet ports to prevent being

broken down by the static electricity

5. When working with Raspberry Pi CM4, its 40pin pin header has the same function

as that of Raspberry Pi(Custom IO for CB1)

6. Using a BTB board-to-board connection, which can be further reinforced with

screws, perfectly compatible with CB1 or Raspberry Pi CM4

7. The MCU adopts STM32G0B0RE 32-bit ARM Cortex-M0+ @64MHz chip

8. The power chip adopts TPS5450-5A, which supports DC12/24V power input, the

output current of the chip is up to 5A, and the peak value can reach 6A, which

perfectly supports the power supply of the core board

9. The protection circuit of the thermistor part prevents the main control chip from

burning due to leakage of the heated bed or heater cartridge

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10. In CNC fan ports: FAN0, FAN1, and FAN2, a 24V (DCIN) or 5V power supply can

be selected with a jumper cap (Note: the voltage of the three CNC fans should be

the same, and cannot be set to different voltages individually)

11. MCU firmware can be upgraded through SD card, or through DFU with Klipper's

make flash command

12. On-board TMC-driven SPI and UART working modes, on-board DIAG function

pins, can be used by simply plugging and unplugging the jumper cap

13. Support filament runout detection, BLTouch, RGB lights...

14. Adopt replaceable fuse for easy replacement

1.2 Basic Parameters

1. Product Size: 160 x 95mm

2. Installation Size: 146 x 84.2mm; 97 x 84.2mm

3. Core Board Installation Size: 33 x 48mm

4. The maximum output current of the heated bed port: 10A

5. The maximum output current of the heater cartridge port: 6A

6. Fan Port: Three for CNC Fan(24V/5V Voltage Selectable), One SoC Fan(Voltage

not Selectable)

7. The maximum output current of the fan port:1A

8. Total current for heater cartridge + driver + fan: ＜20A

9. Extended Interface: BLTouch(Servos, Probe), Fil-DET, 2 * RGB

10.Motor Driver: Support TMC5160, TMC2209, TMC2225, TMC2226, TMC2208,

TMC2130, ST820, LV8729, DRV8825, A4988...

11.Driver Working Mode Support: SPI, UART, STEP/DIR

12.Motor Drive Interface: X, Y, Z(Dual Z-axis), E0, a total of four.

13.Temperature Sensor Interface: 2-way 100K NTC

14.Display Screen: RepRapDiscount EXP-1 + EXP-2

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1.3 Product Dimension

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2. Peripheral Interface

2.1 Interface Diagram

2.1 Pin Out

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3. Interface Instruction

3.1 Installing the Core Board

M4P+CM4：Pay attention to the direction, as shown below.

3.2 40 pin GPIO

When working with CM4, the pin arrangement of 40 Pin GPIO is exactly the same as

that of Raspberry Pi. When working with CB1, it is a custom IO arrangement, as

shown in the figure below, the 'GPIO4' in front of '_' is the IO of CM4, and the latter

'PC7' is the IO of CB1.

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3.3 Type-C

After the M4P is powered on, the red LED1 on the lower right side of the motherboard

will light up, indicating that the power supply is normal. The J8 on the middle of the

board is the power selection terminal, it needs to be short circuited only when the type-

C USB is used to supply power to the motherboard or the USB is used to supply power

externally. The signal of type-C is connected to the SoC, Only used when writing OS

image for CM4 eMMC version.

3.4 Stepper Driver

3.4.1 Normal STEP/DIR(STANDALONE) Mode

For example, A4988, DRV8825, LV8729, ST820...use the jumper cap to short MS0-

MS2 according to the driver subdivision table.

Note: If using A4988or DRV8825, RST and SLP must be shorted with jumper caps for

normal operation.

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