the "Arduino CM4 Duino Base Expansion Board " - the perfect companion for your Raspberry Pi Compute Module 4. This Arduino-compatible baseboard offers a wide range of features to enhance your computing experience and add the Arduino shields to the CM4 easily with similar GPIO to Arduino UNO. The CM4 socket is suitable for all variants of Compute Module 4, and the board comes with an M.2 M KEY slot for connecting communication modules or NVME SSD. The board also has a USB 2.0 Type-A port, an MIPI CSI-2 camera connector, an HDMI port supporting 4K 30fps output, a micro SD card socket for Compute Module 4 Lite variants, and a 5V power input. The dimensions of the board are 73.58 x 53.34mm making it compact and easy to use. With the ComputeMaster 4 Base Board, you can easily add more functionality to your Raspberry Pi Compute Module 4, making it perfect for a wide range of projects.

 Package Includes:

• CM4-Duino x1

Precautions for use

1: Do not plug and unplug any device except USB and HDMI when powered on.
2: Type C interface can be used as a power supply or as a USB interface to burn image (need to use BOOT switch to switch)
3: In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
4: When CM4 is in normal use, it needs to provide a 5V 2A power supply for CM4. Otherwise, there may be problems such as automatic shutdown, frequency reduction, and so on.
5: USB2.0 is closed by default, if you want to open it, you need to add dtoverlay=dwc2,dr_mode=host in config.txt.

Features:

• Arduino-compatible baseboard for Raspberry Pi Compute Module 4
• Enhances computing experience and allows for easy addition of Arduino shields
• Compatible with all variants of Compute Module 4
• M.2 M KEY slot for connecting communication modules or NVME SSD
• USB 2.0 Type-A port, MIPI CSI-2 camera connector, HDMI port (4K 30fps output)
• Micro SD card socket for Compute Module 4 Lite variants
• 5V power input
• Compact size: 73.58 x 53.34mm
• Perfect for a wide range of projects.

Specifications:

Connecting With Compute Module 4

Standard CM4 Socket, Suitable For All Variants Of Compute Module 4

Various Useful Interfaces

Pinout 

Dimensions