1. The CB1 couldn't be connected to the PI TFT screen. The DSI/CSI port will only work while using CM4.

2. The PI4B should be used with CB1 or CM4 core board to run Klipper

CB1 / Manta M4P / M8P link:

https://www.aliexpress.com/item/1005004480671727.html?spm=a2g0s.12269583.0.0.7be158f9Mc1lEc

GitHub Website:

PI4B:
https://github.com/bigtreetech/PI4B-Adapter/tree/master/Hardware
CB1:
https://github.com/bigtreetech/CB1
M4P:
https://github.com/bigtreetech/Manta-M4P
M8P：
https://github.com/bigtreetech/Manta-M8P

1. Brief Introduction

BIGTREETECH CB1 is an alternative to Raspberry Pi CM4. BIGTREETECH M4P is a 4-axis motherboard using a CM4 BTB header, which can work with CB1 or CM4 perfectly.

BIGTREETECH PI4B Adapter V1.0is a Raspberry Pi CM4 carrier board launched by Shenzhen Big Tree Technology Co., Ltd., when the Raspberry Pi CM4 is plugged in, it can be used as a Raspberry Pi 4, which brings convenience for customers to use the CM4.

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 PI4B Adapter V1.0

1. Use Raspberry Pi 4B board outline, the same mounting holedia;

2. Support various versions of CM4 modules;

3. Designed  with Gigabit Ethernet interface, HDMI0 interface, HDMI1 interface, CAM interface, CSI interface;

4. Equipped with ESD protection at the USB and network interfaces;

5. 40 pin double-row pin header with the same function as Raspberry Pi;

6. Adopting Type-C interface, which can be used to write CM4 with eMMC, and can supply power to the whole system at the same time;

7. A 5V power interface is reserved, which can be connected to a 5V fan for CM4 heat dissipation.

1.2 Product Parameters

1.2.1 PI4B

1. Product Size: 85 x 54.29mm

2. Installation Size: 58 x 49mm

3. Power Input: Type-C 5±0.25V  

4. Module Type Support: various versions of Raspberry PiCM4 modules.

5. Interface Support: Micro HDMI x 2，USB 2.0x4，RJ45，CAM，CSI，Micro SD...