BIG TREE TECH Pi V1.2 User manual

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BIGTREETECH
Pi V1.2
User Manual

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CONTENTS
Revision History ..............................................................................3
Product Profile ................................................................................4
Feature Highlights ........................................................................4
Specifications ............................................................................4
Dimensions ..............................................................................5
Peripheral Port ................................................................................5
Connector Diagram .......................................................................5
Connection Description ........................................................................6
Power Supply.............................................................................6
40 pins GPIO .............................................................................7
ADXL345 Wiring ..........................................................................7
SPI Display Wiring ........................................................................8
Connecting a USB To CAN Module .........................................................9
Fan Wiring ...............................................................................9
HDMI Display Wiring .....................................................................10
OS Writing ...................................................................................11
Download OS Image......................................................................11
Download and Install Writing Software.....................................................11
Start to Write OS .........................................................................11
Using Raspberry Pi Imager ...........................................................11
Using balenaEtcher ..................................................................13
Network Configuration........................................................................15
Wired Network ...........................................................................15
WiFi Setting .............................................................................15
Configure the Motherboard ...................................................................16
SSH Connect to Device ...................................................................16
Compile MCU Firmware ..................................................................17
Cautions.....................................................................................19

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Revision History
Version
Revisions
Date
01.00
Original
2022/12/29

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Product Profile
BIGTREETECH Pi v1.2 has the same size and the same mounting hole location as
Raspberry Pi, with 2.4GHz WiFi built in.
Feature Highlights
1. CPU: ALLWINNER H616, Quad-core Cortex-A53 @1.5GHz
2. GPU: Mali G31 MP2, Support OpenGL3.2
3. RAM: 1GB DDR3L SDRAM
4. Display: HDMI2.0A Port, 4K Supported
5. 4 x USB 2.0 Ports
6. Fast Ethernet + 100Mbps WiFi
7. Audio: 3.5mm Jack
8. 40-pin GPIO
9. Display: SPI Port
10.ADXL345 Port
11.Onboard connecting port for USB To CAN Module.
12.Built-in IR Receiver
13.The mounting holes are in the same location as Raspberry Pi.
Specifications
1. Product Dimensions: 85 x 56 mm
2. Mounting Size: 64 x 49.4 mm
3. Type-C Input Voltage: DC 5V±5%/2A
4. Input Voltage of Power IN Terminal: DC 12V-24V
5. Pi v1.2 Output Voltage: 3.3V±2%/100mA
6. Pi v1.2 WiFi: 2.4G/802.11 b/g/n Wireless LAN

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Dimensions
Peripheral Port
Connector Diagram

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Connection Description
Power Supply
USB Power Supply: The SOC's UART converts USB signals through WCH340E. Connect
this port to the PC to monitor Pi startup via the serial port tool, and identify faulty parts if
there are any.
DC12-24V:

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40 pins GPIO
ADXL345 Wiring

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SPI Display Wiring

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Connecting a USB To CAN Module
Note: when using the U2C module, the SOC's USB2 is used for communication.
Fan Wiring

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HDMI Display Wiring

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OS Writing
Download OS Image
Please download and install the OS image we provided:
https://github.com/bigtreetech/CB1/releases
Download and Install Writing Software
Install the official Raspberry Pi Imager: https://www.raspberrypi.com/software/
balenaEtcher: https://www.balena.io/etcher/
Choose one of the above software to download and install.
Start to Write OS
Using Raspberry Pi Imager
1. Insert a microSD card into your computer via a card reader.
2. Choose OS.

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3. Select "Use custom", then select the image that you downloaded.
4. Select the microSD card and click "WRITE"(WRITE the image will format the microSD
card. Be careful not to select the wrong storage device, otherwise the data will be
formatted).

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5. Wait for the writing to finish.
Using balenaEtcher
1. Insert a microSD card into your computer via a card reader.
2. Select the image that you downloaded.

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3. Select the microSD card and click "WRITE" (WRITE the image will format the microSD
card. Be careful not to select the wrong storage device, otherwise the data will be
formatted).
4. Wait for the writing to finish.

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Network Configuration
Wired Network
For wired networks, no additional settings are needed. Just plug and play.
WiFi Setting
After the OS image writing is completed, the microSD card will have a FAT32 recognized
by the computer, find "system.cfg".
Open it with Notepad, replace WIFI-SSID with your WiFi name, and
PASSWORD with your password.

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Configure the Motherboard
SSH Connect to Device
1. Install the SSH application Mobaxterm：https://mobaxterm.mobatek.net/download-
home-edition.html
2. Insert the microSD card into the motherboard, and wait for the system to load after
powering on, approx. 1-2min.
3. The device will automatically be assigned an IP address after successfully connecting
to the network.
4. Find the device IP address on your router page.
5. Open Mobaxterm and click "Session", and click "SSH", enter the device IP into the
Remote host, and click "OK"(Note: your computer and the device needs to be under
the same network).

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6. Login
Login as: biqu
Password: biqu
Compile MCU Firmware
1. After SSH is successfully connected to the device, enter in the terminal:
cd ~/klipper/
make menuconfig
The firmware is compiled based on the motherboard configuration, here we take
Manta M4P as an example:
* [*] Enable extra low-level configuration options
* Micro-controller Architecture (STMicroelectronics STM32) --->
* Processor model (STM32G0B1) --->
* Bootloader offset (8KiB bootloader) --->
* Clock Reference (8 MHz crystal) --->
* Communication interface (USB (on PA11/PA12)) --->

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2. Press 'q' to exit, and "Yes"when asked to save the configuration.
3. Run make to compile firmware, 'klipper.bin' file will be generated in the
home/pi/klipper/out folder when make is finished, download it onto your computer
using the SSH application.

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Cautions
Pay attention to the heat dissipation of Pi. If the running application consumes too many
system resources, it will get hot quite serious.
If you need other resources for this product, please visit https://github.com/bigtreetech/ and find them
yourself. If you cannot find the resources you need, you can contact our after-sales support.
If you encounter other problems during use, feel free to contact us, and we are answering them
carefully; any good opinions or suggestions on our products are welcome, too and we will consider
them carefully. Thank you for choosing BIGTREETECH. Your support means a lot to us!